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Commit bd6cb0dc authored by Ioannis Papagiannopoulos's avatar Ioannis Papagiannopoulos Committed by Sebastien Robin
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major modifications to OperatedMachine.py. OperatorPool and OperatedPoolBroker added

parent ff79aaa1
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dream/simulation/OperatedMachine.py
View file @ bd6cb0dc
...@@ -32,11 +32,14 @@ from Failure import Failure ...@@ -32,11 +32,14 @@ from Failure import Failure
# from CoreObject import CoreObject # from CoreObject import CoreObject
from Machine import Machine from Machine import Machine
from OperatedPoolBroker import Broker
from OperatorPool import OperatorPool
from RandomNumberGenerator import RandomNumberGenerator from RandomNumberGenerator import RandomNumberGenerator
import scipy.stats as stat import scipy.stats as stat
# =========================================================================== # ===========================================================================
# the Machine object # the Machine object
# =========================================================================== # ===========================================================================
# class Machine(CoreObject): # class Machine(CoreObject):
class OperatedMachine(Machine): class OperatedMachine(Machine):
...@@ -45,18 +48,41 @@ class OperatedMachine(Machine): ...@@ -45,18 +48,41 @@ class OperatedMachine(Machine):
# ======================================================================= # =======================================================================
def __init__(self, id, name, capacity=1, distribution='Fixed', mean=1, stdev=0, min=0, max=10,\ def __init__(self, id, name, capacity=1, distribution='Fixed', mean=1, stdev=0, min=0, max=10,\
failureDistribution='No', MTTF=0, MTTR=0, availability=0, repairman='None',\ failureDistribution='No', MTTF=0, MTTR=0, availability=0, repairman='None',\
operator='None',operationType='None',\ operatorPool='None',operationType='None',\
loadDistribution="No",loadMean=0, loadStdev=0, loadMin=0, loadMax=10,
setupDistribution="No",setupMean=0, setupStdev=0, setupMin=0, setupMax=10): setupDistribution="No",setupMean=0, setupStdev=0, setupMin=0, setupMax=10):
Machine.__init__(self, id, name, capacity, distribution, mean, stdev, min, max,\ Machine.__init__(self, id, name, capacity, distribution, mean, stdev, min, max,\
failureDistribution, MTTF, MTTR, availability, repairman) failureDistribution, MTTF, MTTR, availability, repairman)
# type of the machine # type of the machine
self.type = "OperatedMachine" self.type = "OperatedMachine"
# sets the operator resource of the Machine # sets the operator resource of the Machine
self.operator=operator # check if the operatorPool is a List or a OperatorPool type Object
# define if setup/removal/processing are performed by the operator # if it is a list then initiate a OperatorPool type object containing
# the list of operators provided
if (type(operatorPool) is list) and len(operatorPool)>0:
id = id+'_OP'
name=self.objName+'_operatorPool'
self.operatorPool=OperatorPool(id, name, operatorsList=operatorPool)
else:
self.operatorPool=opeartorPool
# update the operatorPool coreObjects list
self.operatorPool.coreObjectIds.append(self.id)
self.operatorPool.coreObjects.append(self)
# holds the Operator currently processing the Machine
self.currentOperator='None'
# define if load/setup/removal/processing are performed by the operator
self.operationType=operationType self.operationType=operationType
# boolean to check weather the machine is being operated # boolean to check weather the machine is being operated
self.toBeOperated = False self.toBeOperated = False
# define the load times
self.loadDistType=loadDistribution
self.loadRng=RandomNumberGenerator(self, self.loadDistType)
self.loadRng.avg=loadMean
self.loadRng.stdev=loadStdev
self.loadRng.min=loadMin
self.loadRng.max=loadMax
# variable that informs on the need for setup
self.setUp=True
# define the setup times # define the setup times
self.setupDistType=setupDistribution self.setupDistType=setupDistribution
self.stpRng=RandomNumberGenerator(self, self.setupDistType) self.stpRng=RandomNumberGenerator(self, self.setupDistType)
...@@ -65,28 +91,62 @@ class OperatedMachine(Machine): ...@@ -65,28 +91,62 @@ class OperatedMachine(Machine):
self.stpRng.min=setupMin self.stpRng.min=setupMin
self.stpRng.max=setupMax self.stpRng.max=setupMax
# examine if there are multiple operation types performed by the operator # examine if there are multiple operation types performed by the operator
self.multOperationTypeList=[] # there can be Setup/Processing operationType # there can be Setup/Processing operationType
# or the combination of both (MT-Setup-Processing) # or the combination of both (MT-Load-Setup-Processing)
self.multOperationTypeList=[]
if self.operationType.startswith("MT"): if self.operationType.startswith("MT"):
OTlist = operationType.split('-') OTlist = operationType.split('-')
self.operationType=OTlist.pop(0) self.operationType=OTlist.pop(0)
self.multOperationTypeList = OTlist self.multOperationTypeList = OTlist
else: else:
self.multOperationTypeList.append(self.operationType) self.multOperationTypeList.append(self.operationType)
# lists to hold statistics of multiple runs
self.WaitingForOperator=[]
self.WaitingForLoadOperator=[]
self.Loading = []
self.SettingUp =[]
# ======================================================================= # =======================================================================
# initialize the machine # initialize the machine
# ======================================================================= # =======================================================================
def initialize(self): def initialize(self):
Machine.initialize(self) Machine.initialize(self)
self.broker = Broker(self) # initiate the Broker responsible to control the request/release
activate(self.broker,self.broker.run()) # initialize the operator pool if any
self.call=False if (self.operatorPool!="None"):
self.set=False self.operatorPool.initialize()
self.broker = Broker(self)
activate(self.broker,self.broker.run())
for operator in self.operatorPool.operators:
operator.coreObjectIds.append(self.id)
operator.coreObjects.append(self)
# the time that the machine started/ended its wait for the operator
self.timeWaitForOperatorStarted=0
self.timeWaitForOperatorEnded=0
self.totalTimeWaitingForOperator=0 self.totalTimeWaitingForOperator=0
# the time that the machine started/ended its wait for the operator
self.timeWaitForLoadOperatorStarted=0
self.timeWaitForLoadOperatorEnded=0
self.totalTimeWaitingForLoadOperator=0
# the time that the operator started/ended loading the machine
self.timeLoadStarted=0
self.timeLoadEnded=0
self.totalLoadTime=0
# the time that the operator started/ended setting-up the machine
self.timeSetupStarted=0
self.timeSetupEnded=0
self.totalSetupTime=0
# Current entity load/setup/loadOperatorwait/operatorWait related times
self.operatorWaitTimeCurrentEntity=0 # holds the time that the machine was waiting for the operator
self.loadOperatorWaitTimeCurrentEntity = 0 # holds the time that the machine waits for operator to load the it
self.loadTimeCurrentEntity = 0 # holds the time to load the current entity
self.setupTimeCurrentEntity = 0 # holds the time to setup the machine before processing the current entity
# ======================================================================= # =======================================================================
# the main process of the machine # the main process of the machine
# ======================================================================= # =======================================================================
def run(self): def run(self):
# execute all through simulation time # execute all through simulation time
...@@ -95,39 +155,103 @@ class OperatedMachine(Machine): ...@@ -95,39 +155,103 @@ class OperatedMachine(Machine):
# canAcceptAndIsRequested is invoked to check when the machine requested to receive an entity # canAcceptAndIsRequested is invoked to check when the machine requested to receive an entity
yield waituntil, self, self.canAcceptAndIsRequested yield waituntil, self, self.canAcceptAndIsRequested
# here or in the get entity (apart from the loatTimeCurrentEntity)
# in case they are placed inside the getEntity then the initialize of
# the corresponding variables should be moved to the initialize() of the CoreObject
self.operatorWaitTimeCurrentEntity = 0
self.loadOperatorWaitTimeCurrentEntity = 0
self.loadTimeCurrentEntity = 0
self.setupTimeCurrentEntity = 0
# ======= request a resource # ======= request a resource
if(self.operator!="None"): if(self.operatorPool!="None") and any(type=='Load' for type in self.multOperationTypeList):
# when it's ready to accept (canAcceptAndIsRequested) then inform the broker # when it's ready to accept (canAcceptAndIsRequested) then inform the broker
# machines waits to be operated (waits for the operator) # machines waits to be operated (waits for the operator)
self.operateMachine() self.requestOperator()
# wait until the Broker has waited times equal to setupTime (if any) self.timeWaitForLoadOperatorStarted = now()
yield waituntil, self, self.brokerIsSet # wait until the Broker has waited times equal to loadTime (if any)
yield waituntil, self, self.broker.brokerIsSet
self.timeWaitForLoadOperatorEnded = now()
self.loadOperatorWaitTimeCurrentEntity += self.timeWaitForLoadOperatorEnded-self.timeWaitForLoadOperatorStarted
self.totalTimeWaitingForLoadOperator += self.loadOperatorWaitTimeCurrentEntity
# get the entity # ======= Load the machine if the Load is defined as one of the Operators' operation types
self.getEntity() if any(type=="Load" for type in self.multOperationTypeList) and self.isOperated():
self.timeLoadStarted = now()
# ======= release a resource yield hold,self,self.calculateLoadTime()
if (self.operator!="None")\ # if self.interrupted(): There is the issue of failure during the Loading
and any(type=="Setup" for type in self.multOperationTypeList)\ self.timeLoadEnded = now()
and not any(type=="Processing" for type in self.multOperationTypeList): self.loadTimeCurrentEntity = self.timeLoadEnded-self.timeLoadStarted
self.totalLoadTime += self.loadTimeCurrentEntity
# ======= release a resource if the only operation type is Load
if (self.operatorPool!="None")\
and any(type=="Load" for type in self.multOperationTypeList)\
and not any(type=="Processing" or type=="Setup" for type in self.multOperationTypeList)\
and self.isOperated():
# after getting the entity release the operator # after getting the entity release the operator
# machine has to release the operator # machine has to release the operator
self.releaseMachine() self.releaseOperator()
# wait until the Broker has finished processing # wait until the Broker has finished processing
yield waituntil, self, self.brokerIsSet yield waituntil, self, self.broker.brokerIsSet
# get the entity
# if there was loading time then we must solve the problem of getting an entity
# from an unidentified giver or not getting an entity at all as the giver
# may fall in failure mode
self.currentEntity=self.getEntity()
# print self.objName, 'part received', now()
# set the currentEntity as the Entity just received and initialize the timer timeLastEntityEntered # set the currentEntity as the Entity just received and initialize the timer timeLastEntityEntered
self.currentEntity=self.getActiveObjectQueue()[0] # entity is the current entity processed in Machine # self.currentEntity=self.getActiveObjectQueue()[0] # entity is the current entity processed in Machine
self.nameLastEntityEntered=self.currentEntity.name # this holds the name of the last entity that got into Machine self.nameLastEntityEntered=self.currentEntity.name # this holds the name of the last entity that got into Machine
self.timeLastEntityEntered=now() #this holds the last time that an entity got into Machine self.timeLastEntityEntered=now() #this holds the last time that an entity got into Machine
# variables dedicated to hold the processing times, the time when the Entity entered, # variables dedicated to hold the processing times, the time when the Entity entered,
# and the processing time left # and the processing time left
timeEntered=now() # timeEntered dummy Timer that holds the time the last Entity Entered timeEntered=now() # timeEntered dummy Timer that holds the time the last Entity Entered
# ======= request a resource if it is not already assigned an Operator
if(self.operatorPool!="None")\
and any(type=="Processing" or type=="Setup" for type in self.multOperationTypeList)\
and not self.isOperated():
# when it's ready to accept (canAcceptAndIsRequested) then inform the broker
# machines waits to be operated (waits for the operator)
self.requestOperator()
self.timeWaitForOperatorStarted = now()
# wait until the Broker has waited times equal to loadTime (if any)
yield waituntil, self, self.broker.brokerIsSet
self.timeWaitForOperatorEnded = now()
self.operatorWaitTimeCurrentEntity += self.timeWaitForOperatorEnded-self.timeWaitForOperatorStarted
# self.totalTimeWaitingForOperator += self.operatorWaitTimeCurrentEntity
# print self.objName, 'operator assigned', now()
tinMStart=self.calculateProcessingTime() # get the processing time, tinMStarts holds the processing time of the machine tinMStart=self.calculateProcessingTime() # get the processing time, tinMStarts holds the processing time of the machine
tinM=tinMStart # timer to hold the processing time left tinM=tinMStart # timer to hold the processing time left
self.processingTimeOfCurrentEntity=tinMStart # processing time of the machine self.processingTimeOfCurrentEntity=tinMStart # processing time of the machine
# ======= setup the machine if the Setup is defined as one of the Operators' operation types
# in plantSim the setup is performed when the machine has to process a new type of Entity and only once
if any(type=="Setup" for type in self.multOperationTypeList) and self.isOperated():
self.timeSetupStarted = now()
yield hold,self,self.calculateSetupTime()
# if self.interrupted(): There is the issue of failure during the setup
self.timeSetupEnded = now()
self.setupTimeCurrentEntity = self.timeSetupEnded-self.timeSetupStarted
self.totalSetupTime += self.setupTimeCurrentEntity
# ======= release a resource if the only operation type is Setup
if (self.operatorPool!="None")\
and self.isOperated()\
and any(type=="Setup" or type=="Load" for type in self.multOperationTypeList)\
and not any(type=="Processing" for type in self.multOperationTypeList):
# after getting the entity release the operator
# machine has to release the operator
self.releaseOperator()
# print self.objName, 'operator released', now()
# wait until the Broker has finished processing
yield waituntil, self, self.broker.brokerIsSet
# variables used to flag any interruptions and the end of the processing # variables used to flag any interruptions and the end of the processing
interruption=False interruption=False
...@@ -147,7 +271,8 @@ class OperatedMachine(Machine): ...@@ -147,7 +271,8 @@ class OperatedMachine(Machine):
# processingEndedFlag and exit loop, # processingEndedFlag and exit loop,
# else (if interrupted()) set interruption flag to true (only if tinM==0), # else (if interrupted()) set interruption flag to true (only if tinM==0),
# and recalculate the processing time left tinM, # and recalculate the processing time left tinM,
# passivate while waiting for repair. # passivate while waiting for repair.
# print self.objName, 'processing started', now()
yield hold,self,tinM # getting processed for remaining processing time tinM yield hold,self,tinM # getting processed for remaining processing time tinM
if self.interrupted(): # if a failure occurs while processing the machine is interrupted. if self.interrupted(): # if a failure occurs while processing the machine is interrupted.
# output to trace that the Machine (self.objName) got interrupted # output to trace that the Machine (self.objName) got interrupted
...@@ -164,10 +289,12 @@ class OperatedMachine(Machine): ...@@ -164,10 +289,12 @@ class OperatedMachine(Machine):
breakTime=now() # dummy variable that the interruption happened breakTime=now() # dummy variable that the interruption happened
# =============== release the operator if there is failure # =============== release the operator if there is failure
if (self.operator!="None")\ if (self.operatorPool!="None")\
and self.isOperated()\
and any(type=="Processing" for type in self.multOperationTypeList): and any(type=="Processing" for type in self.multOperationTypeList):
self.releaseMachine() self.releaseOperator()
yield waituntil,self,self.brokerIsSet # print self.objName, 'operator released due to failure', now()
yield waituntil,self,self.broker.brokerIsSet
# if there is a failure in the machine it is passivated # if there is a failure in the machine it is passivated
yield passivate,self yield passivate,self
...@@ -180,24 +307,31 @@ class OperatedMachine(Machine): ...@@ -180,24 +307,31 @@ class OperatedMachine(Machine):
self.outputTrace(self.getActiveObjectQueue()[0].name, "passivated in "+self.objName+" for "+str(now()-breakTime)) self.outputTrace(self.getActiveObjectQueue()[0].name, "passivated in "+self.objName+" for "+str(now()-breakTime))
# =============== request a resource after the repair # =============== request a resource after the repair
if (self.operator!="None")\ if (self.operatorPool!="None")\
and any(type=="Processing" for type in self.multOperationTypeList)\ and any(type=="Processing" for type in self.multOperationTypeList)\
and not interruption: and not interruption:
self.operateMachine() self.timeWaitForOperatorStarted = now()
yield waituntil,self,self.brokerIsSet self.requestOperator()
yield waituntil,self,self.broker.brokerIsSet
self.timeWaitForOperatorEnded = now()
self.operatorWaitTimeCurrentEntity += self.timeWaitForOperatorEnded-self.timeWaitForOperatorStarted
# self.totalTimeWaitingForOperator += self.operatorWaitTimeCurrentEntity
# if no interruption occurred the processing in M1 is ended # if no interruption occurred the processing in M1 is ended
else: else:
processingEndedFlag=False processingEndedFlag=False
# output to trace that the processing in the Machine self.objName ended # output to trace that the processing in the Machine self.objName ended
# print self.objName, 'processing ended', now()
self.outputTrace(self.getActiveObjectQueue()[0].name,"ended processing in "+self.objName) self.outputTrace(self.getActiveObjectQueue()[0].name,"ended processing in "+self.objName)
# =============== release resource after the end of processing # =============== release resource after the end of processing
if any(type=="Processing" for type in self.multOperationTypeList)\ if (self.operatorPool!='None')\
and not iterruption: and any(type=="Processing" for type in self.multOperationTypeList)\
self.releaseMachine() and not interruption:
yield waituntil,self,self.brokerIsSet self.releaseOperator()
yield waituntil,self,self.broker.brokerIsSet
# print self.objName, 'operator released after processing', now()
# set the variable that flags an Entity is ready to be disposed # set the variable that flags an Entity is ready to be disposed
self.waitToDispose=True self.waitToDispose=True
...@@ -239,21 +373,38 @@ class OperatedMachine(Machine): ...@@ -239,21 +373,38 @@ class OperatedMachine(Machine):
self.downTimeInCurrentEntity+=now()-failTime # already updated from failures during processing self.downTimeInCurrentEntity+=now()-failTime # already updated from failures during processing
# update the timeLastFailureEnded # update the timeLastFailureEnded
self.timeLastFailureEnded=now() self.timeLastFailureEnded=now()
totalTime=now()-timeEntered # dummy variable holding the total time the Entity spent in the Machine # dummy variable holding the total time the Entity spent in the Machine
blockageTime=totalTime-(tinMStart+failureTime) # count the time the Machine was blocked subtracting the failureTime # count the time the Machine was blocked subtracting the failureTime
# and the processing time from the totalTime spent in the Machine # and the processing time from the totalTime spent in the Machine
totalTime=now()-timeEntered
# update the total time waiting for the operator of the machine
self.totalTimeWaitingForOperator += self.operatorWaitTimeCurrentEntity
blockageTime=totalTime-(tinMStart\
+failureTime\
+self.operatorWaitTimeCurrentEntity\
+self.setupTimeCurrentEntity)
# might be possible to avoid using blockageTime # might be possible to avoid using blockageTime
# self.totalBlockageTime+=blockageTime self.totalBlockageTime+=blockageTime
self.totalBlockageTime+=totalTime-(tinMStart+failureTime) #the time of blockage is derived from # the time of blockage is derived from
#the whole time in the machine # the whole time in the machine minus the processing time and the failure time
#minus the processing time and the failure time # self.totalBlockageTime+=totalTime-(tinMStart\
# +failureTime\
# +self.operatorWaitTimeCurrentEntity\
# +self.setupTimeCurrentEntity)
# print 'totalTime:',totalTime
# print 'tinMstart:',tinMStart
# print 'failureTime',failureTime
# print 'blockageTime',blockageTime
# print "machineId:", self.id,"|"\
# "the total blockage time up to now is:", self.totalBlockageTime,"|"\
# "SimulationTime:",now()
# ======================================================================= # =======================================================================
# checks if the Machine can accept an entity # checks if the Machine can accept an entity
# it checks also who called it and returns TRUE only to the predecessor # it checks also who called it and returns TRUE only to the predecessor
# that will give the entity. # that will give the entity.
# ======================================================================= # =======================================================================
def canAccept(self, callerObject=None): def canAccept(self, callerObject=None):
# get active and giver objects # get active and giver objects
...@@ -264,15 +415,29 @@ class OperatedMachine(Machine): ...@@ -264,15 +415,29 @@ class OperatedMachine(Machine):
# if we have only one predecessor just check if there is a place and the machine is up # if we have only one predecessor just check if there is a place and the machine is up
# this is done to achieve better (cpu) processing time # this is done to achieve better (cpu) processing time
# then we can also use it as a filter for a yield method # then we can also use it as a filter for a yield method
if(len(activeObject.previous)==1 or callerObject==None): if(len(activeObject.previous)==1 or callerObject==None):
return (activeObject.operator=='None' or activeObject.operator.checkIfResourceIsAvailable())\ if (activeObject.operatorPool!='None' and any(type=='Load' for type in activeObject.multOperationTypeList)):
and activeObject.Up and len(activeObjectQueue)==0 return activeObject.operatorPool.checkIfResourceIsAvailable()\
and activeObject.Up\
and len(activeObjectQueue)<activeObject.capacity
else:
return activeObject.Up and len(activeObjectQueue)<activeObject.capacity\
thecaller=callerObject thecaller=callerObject
# return True ONLY if the length of the activeOjbectQue is smaller than # return True ONLY if the length of the activeOjbectQue is smaller than
# the object capacity, and the callerObject is not None but the giverObject # the object capacity, and the callerObject is not None but the giverObject
return (activeObject.operator=='None' or activeObject.operator.checkIfResourceIsAvailable())\ if (activeObject.operatorPool!='None' and any(type=='Load' for type in activeObject.multOperationTypeList)):
and len(activeObjectQueue)<activeObject.capacity and (thecaller is giverObject) return activeObject.operatorPool.checkIfResourceIsAvailable()\
and activeObject.Up\
and len(activeObjectQueue)<activeObject.capacity
else:
# the operator doesn't have to be present for the loading of the machine as the load operation
# is not assigned to operators
return activeObject.Up and len(activeObjectQueue)<activeObject.capacity
# while if the set up is performed before the (automatic) loading of the machine then the availability of the
# operator is requested
# return (activeObject.operatorPool=='None' or activeObject.operatorPool.checkIfResourceIsAvailable())\
# and activeObject.Up and len(activeObjectQueue)<activeObject.capacity
# ======================================================================= # =======================================================================
# checks if the Machine can accept an entity and there is an entity in # checks if the Machine can accept an entity and there is an entity in
...@@ -284,14 +449,35 @@ class OperatedMachine(Machine): ...@@ -284,14 +449,35 @@ class OperatedMachine(Machine):
activeObject=self.getActiveObject() activeObject=self.getActiveObject()
activeObjectQueue=self.getActiveObjectQueue() activeObjectQueue=self.getActiveObjectQueue()
giverObject=self.getGiverObject() giverObject=self.getGiverObject()
# if we have only one predecessor just check if there is a place, # if we have only one predecessor just check if there is a place,
# the machine is up and the predecessor has an entity to dispose # the machine is up and the predecessor has an entity to dispose
# this is done to achieve better (cpu) processing time # if the machine has to compete for an Operator that loads the entities onto it
# check if the predecessor if blocked by an other Machine
# if not then the machine has to block the predecessor giverObject to avoid conflicts
# with other competing machines
if(len(activeObject.previous)==1): if(len(activeObject.previous)==1):
return (activeObject.operator=='None' or activeObject.operator.checkIfResourceIsAvailable())\ if (activeObject.operatorPool!='None' and any(type=='Load' for type in activeObject.multOperationTypeList)):
and activeObject.Up and len(activeObjectQueue)<activeObject.capacity\ if activeObject.operatorPool.checkIfResourceIsAvailable()\
and giverObject.haveToDispose(activeObject) and activeObject.Up and len(activeObjectQueue)<activeObject.capacity\
and giverObject.haveToDispose() and not giverObject.exitIsAssigned():
giverObject.assignExit()
return True
else:
return False
else:
# the operator performs no load and the entity is received by the machine while there is
# no need for operators presence. The operator needs to be present only where the load Type
# operation is assigned
return activeObject.Up and len(activeObjectQueue)<activeObject.capacity\
and giverObject.haveToDispose()
# if the set-up performance needs be first performed before the transfer of the entity to
# the machine then the presence of an operator to setup the machine before the getEntity()
# is requested
# return (activeObject.operatorPool=='None'\
# or activeObject.operatorPool.checkIfResourceIsAvailable())\
# and activeObject.Up and len(activeObjectQueue)<activeObject.capacity\
# and giverObject.haveToDispose()
# dummy variables that help prioritize the objects requesting to give objects to the Machine (activeObject) # dummy variables that help prioritize the objects requesting to give objects to the Machine (activeObject)
isRequested=False # is requested is dummyVariable checking if it is requested to accept an item isRequested=False # is requested is dummyVariable checking if it is requested to accept an item
...@@ -300,7 +486,7 @@ class OperatedMachine(Machine): ...@@ -300,7 +486,7 @@ class OperatedMachine(Machine):
# loop through the predecessors to see which have to dispose and which is the one blocked for longer # loop through the predecessors to see which have to dispose and which is the one blocked for longer
i=0 # index used to set the predecessorIndex to the giver waiting the most i=0 # index used to set the predecessorIndex to the giver waiting the most
for object in activeObject.previous: for object in activeObject.previous:
if(object.haveToDispose(activeObject)): if(object.haveToDispose(activeObject)):# and not object.exitIsAssigned()):
isRequested=True # if the predecessor objects have entities to dispose of isRequested=True # if the predecessor objects have entities to dispose of
if(object.downTimeInTryingToReleaseCurrentEntity>0):# and the predecessor has been down while trying to give away the Entity if(object.downTimeInTryingToReleaseCurrentEntity>0):# and the predecessor has been down while trying to give away the Entity
timeWaiting=now()-object.timeLastFailureEnded # the timeWaiting dummy variable counts the time end of the last failure of the giver object timeWaiting=now()-object.timeLastFailureEnded # the timeWaiting dummy variable counts the time end of the last failure of the giver object
...@@ -312,103 +498,202 @@ class OperatedMachine(Machine): ...@@ -312,103 +498,202 @@ class OperatedMachine(Machine):
activeObject.predecessorIndex=i # the object to deliver the Entity to the activeObject is set to the ith member of the previous list activeObject.predecessorIndex=i # the object to deliver the Entity to the activeObject is set to the ith member of the previous list
maxTimeWaiting=timeWaiting maxTimeWaiting=timeWaiting
i+=1 # in the next loops, check the other predecessors in the previous list i+=1 # in the next loops, check the other predecessors in the previous list
return (activeObject.operator=='None' or activeObject.operator.checkIfResourceIsAvailable())\
and activeObject.Up and len(activeObjectQueue)<activeObject.capacity and isRequested if (activeObject.operatorPool!='None' and any(type=='Load' for type in activeObject.multOperationTypeList)):
if activeObject.operatorPool.checkIfResourceIsAvailable()\
and activeObject.Up and len(activeObjectQueue)<activeObject.capacity\
and isRequested and not giverObject.exitIsAssigned():
giverObject.assignExit()
return True
else:
return False
else:
# the operator doesn't have to be present for the loading of the machine as the load operation
# is not assigned to operators
return activeObject.Up and len(activeObjectQueue)<activeObject.capacity and isRequested
# while if the set up is performed before the (automatic) loading of the machine then the availability of the
# operator is requested
# return (activeObject.operatorPool=='None' or activeObject.operatorPool.checkIfResourceIsAvailable())\
# and activeObject.Up and len(activeObjectQueue)<activeObject.capacity and isRequested
# # =======================================================================
# # checks if the Machine can dispose an entity to the following object
# # =======================================================================
# def haveToDispose(self, callerObject=None):
# # get active and the receiver object
# activeObject=self.getActiveObject()
# activeObjectQueue=self.getActiveObjectQueue()
# receiverObject=activeObject.getReceiverObject()
# #if we have only one successor just check if machine waits to dispose and also is up
# # this is done to achieve better (cpu) processing time
# if(len(activeObject.next)==1 or callerObject==None):
# return len(activeObjectQueue)>0\
# and activeObject.waitToDispose\
# and activeObject.Up#\
# #and not receiverObject.exitIsAssigned() # this change has to be implemented on every object
#
# # # if the Machine is empty it returns false right away
# # if(len(activeObjectQueue)==0):
# # return False
#
# thecaller=callerObject
# # give the entity to the successor that is waiting for the most time.
# # (plant simulation does not do this in every occasion!)
# maxTimeWaiting=0 # dummy variable counting the time a successor is waiting
# i=0 # index used to set the successorIndex to the giver waiting the most
# for object in activeObject.next:
# if(object.canAccept(activeObject)): # if a successor can accept an object
# timeWaiting=now()-object.timeLastEntityLeft # the time it has been waiting is updated and stored in dummy variable timeWaiting
# if(timeWaiting>maxTimeWaiting or maxTimeWaiting==0):# if the timeWaiting is the maximum among the ones of the successors
# maxTimeWaiting=timeWaiting
# activeObject.successorIndex=i # set the successorIndex equal to the index of the longest waiting successor
# i+=1 # in the next loops, check the other successors in the previous list
# return len(activeObjectQueue)>0\
# and activeObject.waitToDispose\
# and activeObject.Up\
# and (thecaller is receiverObject)#\
# #and not receiverObject.exitIsAssigned
# ======================================================================= # =======================================================================
# calculates the setup time # calculates the setup time
# ======================================================================= # =======================================================================
def calculateSetupTime(self): def calculateSetupTime(self):
return self.stpRng.generateNumber() return self.stpRng.generateNumber()
# ======================================================================= # =======================================================================
# call the broker # calculates the Load time
# filter for yield waituntil
# =======================================================================
def brokerIsCalled(self):
return self.call
# =======================================================================
# the broker returns control to OperatedMachine.Run
# filter for yield request/release
# ======================================================================= # =======================================================================
def brokerIsSet(self): def calculateLoadTime(self):
return not self.call return self.loadRng.generateNumber()
# ======================================================================= # =======================================================================
# invoke the broker # prepare the machine to be operated
# =======================================================================
def invokeBroker(self):
self.call=True
# self.set=not self.call
# ======================================================================= # =======================================================================
# prepare the machine to be operated def requestOperator(self):
# ======================================================================= self.broker.invokeBroker()
def operateMachine(self):
self.invokeBroker()
self.toBeOperated = True self.toBeOperated = True
# ======================================================================= # =======================================================================
# prepare the machine to be released # prepare the machine to be released
# ======================================================================= # =======================================================================
def releaseMachine(self): def releaseOperator(self):
self.invokeBroker() self.broker.invokeBroker()
self.toBeOperated = False self.toBeOperated = False
# ======================================================================= # =======================================================================
# check if the machine is currently operated # check if the machine is currently operated by an operator
# ======================================================================= # =======================================================================
def isOperated(self): def isOperated(self):
return self.toBeOperated return self.toBeOperated
# ===========================================================================
# Method that handles the Operator Behavior
# ===========================================================================
class Broker(Process):
def __init__(self, operatedMachine):
Process.__init__(self)
self.operatedMachine=operatedMachine # the machine that is handled by the broker
self.setupTime = 0
self.timeOperationStarted = 0;
self.timeWaitForOperatorStarted=0
# ======================================================================= # =======================================================================
# exit the broker # check if the machine is already set-up
# ======================================================================= # =======================================================================
def exitBroker(self): def isSetUp(self):
self.operatedMachine.call=False return self.setUp
# self.operatedMachine.set=not self.operatedMachine.call
def run(self): # =======================================================================
while 1: # request that the machine is set-up by an operator
yield waituntil,self,self.operatedMachine.brokerIsCalled # wait until the broker is called # =======================================================================
# ======= request a resource def requestSetup(self):
# have to see if the availability of resources is enough to check weather the machine is operated self.setUp=False
# or not
if self.operatedMachine.isOperated()\ # =======================================================================
and any(type=="Setup" or type=="Processing" for type in self.operatedMachine.multOperationTypeList): # actions to be taken after the simulation ends
# =======================================================================
# update the time that the station is waiting for the operator def postProcessing(self, MaxSimtime=None):
self.timeWaitForOperatorStarted=now() if MaxSimtime==None:
yield request,self,self.operatedMachine.operator.getResource() from Globals import G
self.operatedMachine.totalTimeWaitingForOperator+=now()-self.timeWaitForOperatorStarted MaxSimtime=G.maxSimTime
# print 'maxSimTime:',G.maxSimTime
# update the time that the operation started
self.timeOperationStarted=now() activeObject=self.getActiveObject()
self.operatedMachine.operator.timeLastOperationStarted=now() activeObjectQueue=self.getActiveObjectQueue()
if any(type=="Setup" for type in self.operatedMachine.multOperationTypeList): # print activeObject.objName
self.setupTime = self.operatedMachine.calculateSetupTime() # print 'the last entity that entered the machine is', activeObject.nameLastEntityEntered, 'at', activeObject.timeLastEntityEntered
yield hold,self,self.setupTime # print 'the current entity in the machine is',activeObject.currentEntity.name
# ======= release a resource
# have to see if the availability of resources is enough to check weather the machine is operated alreadyAdded=False # a flag that shows if the blockage time has already been added
elif not self.operatedMachine.isOperated():
self.operatedMachine.operator.totalWorkingTime+=now()-self.timeOperationStarted # checks all the successors. If no one can accept an Entity then the machine might be blocked
yield release,self,self.operatedMachine.operator.getResource() mightBeBlocked=True
for nextObject in self.next:
if nextObject.canAccept():
mightBeBlocked=False
# if there is an entity that finished processing in a Machine but did not get to reach
# the following Object till the end of simulation,
# we have to add this blockage to the percentage of blockage in Machine
# we should exclude the failure time in current entity though!
# if (len(self.Res.activeQ)>0) and (len(self.next[0].Res.activeQ)>0) and ((self.nameLastEntityEntered == self.nameLastEntityEnded)):
if (len(activeObjectQueue)>0) and (mightBeBlocked)\
and ((activeObject.nameLastEntityEntered == activeObject.nameLastEntityEnded)):
# be carefull here, might have to reconsider
# print 'the machine', activeObject.objName, 'was blocked at', now()
activeObject.totalBlockageTime+=now()-(activeObject.timeLastEntityEnded+activeObject.downTimeInTryingToReleaseCurrentEntity)
# print 'the machine', activeObject.objName,'was trying to release last entity for', activeObject.downTimeInTryingToReleaseCurrentEntity
# print 'the last entity', activeObject.nameLastEntityEnded ,'ended processing at', activeObject.timeLastEntityEnded
# print 'the current Entity in the machine is', activeObject.currentEntity.name
if activeObject.Up==False:
activeObject.totalBlockageTime-=now()-activeObject.timeLastFailure
alreadyAdded=True
# print activeObject.objName,'total Block time:',activeObject.totalBlockageTime#/G.maxSimTime
#if Machine is currently processing an entity we should count this working time
if(len(activeObject.Res.activeQ)>0)\
and (not (activeObject.nameLastEntityEnded==activeObject.nameLastEntityEntered))\
and (activeObject.currentOperator!='None'):
# print 'pre-total working time:',activeObject.totalWorkingTime#/G.maxSimTime
#if Machine is down we should add this last failure time to the time that it has been down in current entity
if self.Up==False:
# if(len(activeObjectQueue)>0) and (self.Up==False):
activeObject.downTimeProcessingCurrentEntity+=now()-activeObject.timeLastFailure
activeObject.totalWorkingTime+=now()-activeObject.timeLastEntityEntered\
-activeObject.downTimeProcessingCurrentEntity\
-activeObject.operatorWaitTimeCurrentEntity\
-activeObject.setupTimeCurrentEntity
activeObject.totalTimeWaitingForOperator+=activeObject.operatorWaitTimeCurrentEntity
# print "downTimeProcessingCurrentEntity", activeObject.downTimeProcessingCurrentEntity
# print "operatorWaitTimeCurrentEntity", activeObject.operatorWaitTimeCurrentEntity
# print "setupTimeCurrentEntity",activeObject.setupTimeCurrentEntity
elif(len(activeObject.Res.activeQ)>0)\
and (not (activeObject.nameLastEntityEnded==activeObject.nameLastEntityEntered))\
and (activeObject.currentOperator=='None'):
# needs further research as the time of failure while waiting for operator is not counted yet
if self.Up==False:
activeObject.downTimeProcessingCurrentEntity+=now()-activeObject.timeLastFailure
activeObject.totalTimeWaitingForOperator+=now()-activeObject.timeWaitForOperatorStarted\
-activeObject.downTimeProcessingCurrentEntity
else:
pass
self.exitBroker() # print activeObject.objName,'total working time:',activeObject.totalWorkingTime#/G.maxSimTime
# if Machine is down we have to add this failure time to its total failure time
# we also need to add the last blocking time to total blockage time
\ No newline at end of file if(activeObject.Up==False):
activeObject.totalFailureTime+=now()-activeObject.timeLastFailure
# we add the value only if it hasn't already been added
#if((len(self.next[0].Res.activeQ)>0) and (self.nameLastEntityEnded==self.nameLastEntityEntered) and (not alreadyAdded)):
if((mightBeBlocked) and (activeObject.nameLastEntityEnded==activeObject.nameLastEntityEntered) and (not alreadyAdded)):
activeObject.totalBlockageTime+=(now()-activeObject.timeLastEntityEnded)-(now()-activeObject.timeLastFailure)-activeObject.downTimeInTryingToReleaseCurrentEntity
# print activeObject.objName,'total Block time:',activeObject.totalBlockageTime#/G.maxSimTime
#Machine was idle when it was not in any other state
activeObject.totalWaitingTime=MaxSimtime-activeObject.totalWorkingTime-activeObject.totalBlockageTime-activeObject.totalFailureTime
# print activeObject.objName,'total waiting time:',activeObject.totalWaitingTime#/G.maxSimTime
if activeObject.totalBlockageTime<0 and activeObject.totalBlockageTime>-0.00001: #to avoid some effects of getting negative cause of rounding precision
self.totalBlockageTime=0
if activeObject.totalWaitingTime<0 and activeObject.totalWaitingTime>-0.00001: #to avoid some effects of getting negative cause of rounding precision
self.totalWaitingTime=0
activeObject.Failure.append(100*self.totalFailureTime/MaxSimtime)
activeObject.Blockage.append(100*self.totalBlockageTime/MaxSimtime)
activeObject.Waiting.append(100*self.totalWaitingTime/MaxSimtime)
activeObject.Working.append(100*self.totalWorkingTime/MaxSimtime)
activeObject.WaitingForOperator.append(100*self.totalTimeWaitingForOperator/MaxSimtime)
activeObject.WaitingForLoadOperator.append(100*self.totalTimeWaitingForLoadOperator/MaxSimtime)
activeObject.Loading.append(100*self.totalLoadTime/MaxSimtime)
activeObject.SettingUp.append(100*self.totalSetupTime/MaxSimtime)
\ No newline at end of file
dream/simulation/OperatedPoolBroker.py 0 → 100644
View file @ bd6cb0dc
# ===========================================================================
# Copyright 2013 University of Limerick
#
# This file is part of DREAM.
#
# DREAM is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# DREAM is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with DREAM. If not, see <http://www.gnu.org/licenses/>.
# ===========================================================================
'''
Created on 27 Nov 2013
@author: Ioannis
'''
'''
Models an Interruption that handles the operating of a Station by an ObjectResource
'''
from SimPy.Simulation import Process, Resource
from ObjectInterruption import ObjectInterruption
from SimPy.Simulation import waituntil, now, hold, request, release
# ===========================================================================
# Class that handles the Operator Behavior
# ===========================================================================
class Broker(ObjectInterruption):
# =======================================================================
# according to this implementation one machine per broker is allowed
# The Broker is initiated within the Machine and considered as
# black box for the ManPy end Developer
# =======================================================================
def __init__(self, operatedMachine):
ObjectInterruption.__init__(self,operatedMachine)
self.type = "Broker"
# variable used to hand in control to the Broker
self.call=False
# variables that have to do with timing
self.timeOperationStarted = 0
self.timeLastOperationEnded = 0
self.timeWaitForOperatorStarted=0
# =======================================================================
# the run method
# =======================================================================
def run(self):
while 1:
yield waituntil,self,self.brokerIsCalled # wait until the broker is called
# ======= request a resource
if self.victim.isOperated()\
and any(type=="Load" or type=="Setup" or type=="Processing"\
for type in self.victim.multOperationTypeList):
# update the time that the station is waiting for the operator
self.timeWaitForOperatorStarted=now()
# # update the currentObject of the operatorPool
# self.victim.operatorPool.currentObject = self.victim
# wait until a resource is available
yield waituntil, self, self.victim.operatorPool.checkIfResourceIsAvailable
# set the available resource as the currentOperator
self.victim.currentOperator=self.victim.operatorPool.findAvailableOperator()
yield request,self,self.victim.operatorPool.getResource(self.victim.currentOperator)
# self.victim.totalTimeWaitingForOperator+=now()-self.timeWaitForOperatorStarted
# clear the timeWaitForOperatorStarted variable
self.timeWaitForOperatorStarted = 0
# update the time that the operation started
self.timeOperationStarted = now()
self.victim.currentOperator.timeLastOperationStarted=now()
# ======= release a resource
elif not self.victim.isOperated():
self.victim.currentOperator.totalWorkingTime+=now()-self.victim.currentOperator.timeLastOperationStarted
yield release,self,self.victim.operatorPool.getResource(self.victim.currentOperator)
# the victim current operator must be cleared after the operator is released
self.victim.currentOperator = 'None'
self.timeLastOperationEnded = now()
else:
pass
# return the control the machine.run
self.exitBroker()
# =======================================================================
# call the broker
# filter for Broker - yield waituntil brokerIsCalled
# =======================================================================
def brokerIsCalled(self):
return self.call
# =======================================================================
# the broker returns control to OperatedMachine.Run
# filter for Machine - yield request/release operator
# =======================================================================
def brokerIsSet(self):
return not self.call
# =======================================================================
# hand in the control to the Broker.run
# to be called by the machine
# =======================================================================
def invokeBroker(self):
self.call=True
# =======================================================================
# return control to the Machine.run
# =======================================================================
def exitBroker(self):
self.call=False
\ No newline at end of file
dream/simulation/OperatorPool.py 0 → 100644
View file @ bd6cb0dc
# ===========================================================================
# Copyright 2013 University of Limerick
#
# This file is part of DREAM.
#
# DREAM is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# DREAM is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with DREAM. If not, see <http://www.gnu.org/licenses/>.
# ===========================================================================
'''
Created on 22 Nov 2012
@author: Ioannis
'''
'''
models a Broker that organizes the dispatch of operators/repairmen
'''
from SimPy.Simulation import Resource, now
import xlwt
import scipy.stats as stat
from ObjectResource import ObjectResource
from Operator import Operator
# ===========================================================================
# the resource that handles multiple operators
# ===========================================================================
class OperatorPool(ObjectResource):
def __init__(self, id, name, capacity=1,operatorsList='None'):
self.id=id
self.objName=name
self.type="OperatorPool"
# self.Res=Resource(self.capacity)
# lists to hold statistics of multiple runs
# self.Waiting=[] # holds the percentage of waiting time
# self.Working=[] # holds the percentage of working time
# list with the coreObjects IDs that the Operators operate
self.coreObjectIds=[]
# list with the coreObjects that the Operators operate
self.coreObjects=[]
# holds the object/Machine that currently handles the operator pool
self.currentObject='None'
# check if an operatorsList is 'None'
if operatorsList=='None' or (operatorsList!='None' and len(operatorsList)==0):
# list of operators that the OperatorPool holds
self.operators = []
# the capacity of the OperatorPool in Operators
self.capacity=capacity
# populate the the operators list and initiate the operators
for index in range(self.capacity):
id='O_'+str(index)
name=self.objName+str(index)
operators.append(Operator(id,name))
# if a list of operators is given then update accordingly the self.operators variable
else:
assert type(operatorsList) is list, "operatorsList is not a List"
self.operators=operatorsList
self.capacity=len(self.operators)
# =======================================================================
# initialize the object
# =======================================================================
def initialize(self):
# self.totalWorkingTime=0 #holds the total working time
# self.totalWaitingTime=0 #holds the total waiting time
# self.timeLastOperationStarted=0 #holds the time that the last operation was started
# initialize the operators
for operator in self.operators:
operator.initialize()
# =======================================================================
# checks if there are operators available
# =======================================================================
def checkIfResourceIsAvailable(self):
# maxTimeWaiting = 0
# for operator in self.operators:
# for machine in operator.coreObjects:
# timeWaiting = now()-machine.broker.timeWaitForOperatorStarted
# if (timeWaiting>=maxTimeWaiting):
# maxTimeWaiting=timeWaiting
return any(operator.checkIfResourceIsAvailable()==True for operator in self.operators)
# =======================================================================
# find the first available operator and return it
# =======================================================================
def findAvailableOperator(self): # may need to implement different sorting of the operators
return next(x for x in self.operators if x.checkIfResourceIsAvailable())
# =======================================================================
# returns the resource
# =======================================================================
def getResource(self,operator):
# have to return the resource of the first operator available
return operator.getResource()
# =======================================================================
# returns the active queue of the resource
# needs refining
# =======================================================================
def getResourceQueue(self,operator):
return operator.getResourceQueue()
\ No newline at end of file
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