Commit 16e2ea39 authored by Georgios Dagkakis's avatar Georgios Dagkakis

count total WIP of the model

parent 575b79d6
...@@ -8,7 +8,7 @@ import time ...@@ -8,7 +8,7 @@ import time
start=time.time() start=time.time()
# simulation time # simulation time
maxSimTime=200 maxSimTime=10000
# the capacity of B123 # the capacity of B123
capacity=42 #float('inf') capacity=42 #float('inf')
...@@ -28,16 +28,16 @@ class OpQueue(Queue): ...@@ -28,16 +28,16 @@ class OpQueue(Queue):
return M2 return M2
return None return None
# calculate average buffer level # # calculate average buffer level
def postProcessing(self): # def postProcessing(self):
Queue.postProcessing(self, MaxSimtime=maxSimTime) # Queue.postProcessing(self, MaxSimtime=maxSimTime)
totalBufferLevel=0 # totalBufferLevel=0
for i in range(0,len(self.wipStatList)-1): # for i in range(0,len(self.wipStatList)-1):
bufferLevel=self.wipStatList[i][1] # bufferLevel=self.wipStatList[i][1]
duration=self.wipStatList[i+1][0]-self.wipStatList[i][0] # duration=self.wipStatList[i+1][0]-self.wipStatList[i][0]
totalBufferLevel+=bufferLevel*duration # totalBufferLevel+=bufferLevel*duration
averageBufferLevel=totalBufferLevel/maxSimTime # averageBufferLevel=totalBufferLevel/maxSimTime
self.BufferLevel.append(averageBufferLevel) # self.BufferLevel.append(averageBufferLevel)
class OpExit(Exit): class OpExit(Exit):
# set numGoodParts=0 at every replication # set numGoodParts=0 at every replication
...@@ -95,7 +95,9 @@ class OpMachine(Machine): ...@@ -95,7 +95,9 @@ class OpMachine(Machine):
# method invoked by the generator at every time period # method invoked by the generator at every time period
def controllerMethod(): def controllerMethod():
# at the start of the simulation reset the G.totalWIP counter
if G.env.now==0:
G.totalWIP=0
# for every machine calculate the state (based on transition probabilities) # for every machine calculate the state (based on transition probabilities)
for M in [M1,M2,M3]: for M in [M1,M2,M3]:
rn1=createRandomNumber() rn1=createRandomNumber()
...@@ -166,6 +168,14 @@ def controllerMethod(): ...@@ -166,6 +168,14 @@ def controllerMethod():
M2.locked=True M2.locked=True
break break
# count the total WIP for the machines and the Queue
for obj in [M1,M2,M3,B123]:
G.totalWIP+=len(obj.getActiveObjectQueue())
# at the end of the simulation append to the list that keeps for all replications
if G.env.now==G.maxSimTime-1:
G.AverageWIP.append(G.totalWIP/float(G.maxSimTime))
# returns a number from the uniform distribution (0,1) # returns a number from the uniform distribution (0,1)
def createRandomNumber(): def createRandomNumber():
return Rnd.uniform(0,1) return Rnd.uniform(0,1)
...@@ -200,12 +210,15 @@ for obj in objectList: ...@@ -200,12 +210,15 @@ for obj in objectList:
# GoodExits will keep the number of good parts produced in every replication # GoodExits will keep the number of good parts produced in every replication
E.GoodExits=[] E.GoodExits=[]
# variables to keep the WIP
G.totalWIP=0
G.AverageWIP=[]
# GoodParts will keep the number of good parts a machine produced in every replication # GoodParts will keep the number of good parts a machine produced in every replication
for M in [M1,M2,M3]: for M in [M1,M2,M3]:
M.GoodExits=[] M.GoodExits=[]
# BufferLevel will keep the average buffer level for each replication
B123.BufferLevel=[]
# the transition probabilities for machines # the transition probabilities for machines
M1.p=0.01 M1.p=0.01
...@@ -222,21 +235,25 @@ M3.r=0.1 ...@@ -222,21 +235,25 @@ M3.r=0.1
M3.f=0.2 M3.f=0.2
# call the runSimulation giving the objects and the length of the experiment # call the runSimulation giving the objects and the length of the experiment
runSimulation(objectList, maxSimTime, numberOfReplications=1,trace='No') runSimulation(objectList, maxSimTime, numberOfReplications=20,trace='No')
#print the results #print the results
PRt=sum(E.Exits)/float(len(E.Exits)) PRt=sum(E.Exits)/float(len(E.Exits))
PRg=sum(E.GoodExits)/float(len(E.GoodExits)) PRg=sum(E.GoodExits)/float(len(E.GoodExits))
B123ABF=sum(B123.BufferLevel)/float(len(B123.BufferLevel)) # B123ABF=sum(B123.BufferLevel)/float(len(B123.BufferLevel))
print E.Exits print E.Exits
print E.GoodExits print E.GoodExits
print G.AverageWIP
print 'PRt=',PRt/float(maxSimTime) print 'PRt=',PRt/float(maxSimTime)
print 'PRg=',PRg/float(maxSimTime) print 'PRg=',PRg/float(maxSimTime)
print 'B123 average buffer level=',B123ABF # print 'B123 average buffer level=',B123ABF
for M in [M1,M2,M3]: for M in [M1,M2,M3]:
GE=sum(M.GoodExits)/float(len(M.GoodExits)) GE=sum(M.GoodExits)/float(len(M.GoodExits))
print 'PRg'+M.id,'=',GE/float(maxSimTime) print 'PRg'+M.id,'=',GE/float(maxSimTime)
AVGWIP=sum(G.AverageWIP)/float(len(G.AverageWIP))
print 'AVGWIP=',AVGWIP
# ExcelHandler.outputTrace('OperationalFailures') # ExcelHandler.outputTrace('OperationalFailures')
print "running time=",time.time()-start print "running time=",time.time()-start
...@@ -246,26 +263,26 @@ from rpy2.robjects.packages import importr ...@@ -246,26 +263,26 @@ from rpy2.robjects.packages import importr
from rpy2.rinterface import NA_Real from rpy2.rinterface import NA_Real
# to plot B123 if we want # # to plot B123 if we want
base = importr("base") # base = importr("base")
stats = importr("stats") # stats = importr("stats")
grdevices = importr("grDevices") # grdevices = importr("grDevices")
graphics = importr("graphics") # graphics = importr("graphics")
#
graphWipStatList=list(B123.wipStatList) # graphWipStatList=list(B123.wipStatList)
index=0 # index=0
for i in range(len(B123.wipStatList)-1): # for i in range(len(B123.wipStatList)-1):
if B123.wipStatList[i][0]==B123.wipStatList[i+1][0]: # if B123.wipStatList[i][0]==B123.wipStatList[i+1][0]:
del graphWipStatList[index] # del graphWipStatList[index]
else: # else:
index+=1 # index+=1
#
#
simTime = [x[0] for x in graphWipStatList] # simTime = [x[0] for x in graphWipStatList]
bufferLevel = [x[1] for x in graphWipStatList] # bufferLevel = [x[1] for x in graphWipStatList]
#
grdevices.png("B123 Buffer Level.png") # grdevices.png("B123 Buffer Level.png")
graphics.plot(simTime, bufferLevel, xlab="Simulation Time", ylab="Buffer Level", col="red", type="l", tck=1) # graphics.plot(simTime, bufferLevel, xlab="Simulation Time", ylab="Buffer Level", col="red", type="l", tck=1)
graphics.title("Buffer level time series") # graphics.title("Buffer level time series")
grdevices.dev_off() # grdevices.dev_off()
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