基于witness的系統(tǒng)建模與仿真實驗報告

多路徑生產(chǎn)仿真模型實驗名稱：多路徑生產(chǎn)仿真模型二、實驗?zāi)康?〕了解結(jié)合路徑path的系統(tǒng)設(shè)計。2〕熟悉系統(tǒng)元素Part、Machine、Buffer、Variable、Labor、Attribute的用法。3〕深入研究系統(tǒng)元素Machine的用法。4〕研究機(jī)器、緩沖區(qū)結(jié)合路徑以及勞動者之間協(xié)作所形成系統(tǒng)的運行效率。三、實驗設(shè)備儀器計算機(jī)、Witness仿真軟件四、實驗內(nèi)容1、元素定義〔Define〕本系統(tǒng)的元素定義如表1所示。表1實體元素定義元素名稱類型數(shù)量說明BackPart1部件SeatPart1部件LegsPart1部件B1buffer1緩沖區(qū)B2buffer1緩沖區(qū)B3buffer1緩沖區(qū)Paint_Qbuffer1緩沖區(qū)Inspection_Qbuffer1緩沖區(qū)Packing_Qbuffer1緩沖區(qū)path1Path1路徑Path2Path1路徑Path3Path1路徑Path4Path1路徑Path5Path1路徑Assemblymachine1組裝機(jī)器Paintingmachine1染色機(jī)器Inspectionmachine1檢驗機(jī)器Packingmachine1包裝機(jī)器Inspectorlabor1質(zhì)檢員xvariable1變量attributec1屬性2、元素可視化〔Display〕設(shè)置各個實體元素的顯示特征定義設(shè)置如下列圖所示3、元素細(xì)節(jié)〔Detail〕設(shè)計1對Part各元素細(xì)節(jié)設(shè)計可視化效果設(shè)定屬性定義：seat.ArrivalType＝ActiveerArrival=2.0back.ArrivalType＝ActiveerArrival=2.0legs.ArrivalType＝ActiveerArrival=2.0規(guī)那么定義：seat’soutputRules：PUSHtoB1back’soutputRules：PUSHtoB2legs’outputRules：PUSHtoB32對Buffer各元素細(xì)節(jié)設(shè)計display選項中對話框?qū)uffericon、name、partqueue屬性進(jìn)行設(shè)置；3對Machine各元素的細(xì)節(jié)設(shè)計屬性定義：Assembly.Type=AssemblyAssembly.CycleTime=6.0Assembly.InputQuantity=3；！機(jī)器Assembly的輸入零部件數(shù)量為3個；規(guī)那么定義：Assembly.InputRules〔From〕:MATCH/ANYB1#(1)B2#(1)B3#(1)！匹配緩沖區(qū)B1、B2、B3中的任意類型的part各一個；Assembly.OutputRules〔To〕:PUSHtoPaint_QUsingPath！通過路徑將成品送至緩沖區(qū)Paint_Q；活動定義：Assembly.actionsonfinish：3.1〕對machine元素Assembly的詳細(xì)定義：屬性定義：?Assembly.Type=Assembly?Assembly.CycleTime=6.0?Assembly.InputQuantity=3；！機(jī)器Assembly的輸入零部件數(shù)量為3個；規(guī)那么定義：Assembly.InputRules〔From〕:?MATCH/ANYB1#(1)B2#(1)B3#(1)！匹配緩沖區(qū)B1、B2、B3中的任意類型的part各一個；Assembly.OutputRules〔To〕:?PUSHtoPaint_QUsingPath！通過路徑將成品送至緩沖區(qū)Paint_Q；活動定義：Assembly.actionsonfinish：?ICON=115！通過變換圖標(biāo)，表示seat、back、legs組裝成了一把白色椅子；3.2〕對machine元素inspection的詳細(xì)定義：屬性定義：?inspection.Type=Single?inspection.CycleTime=3.0?inspection.labor＝Inspector規(guī)那么定義：inspection.InputRules〔From〕:?PULLfromInspection_Q！從緩沖區(qū)Inspection_Q中提取零件加工；inspection.OutputRules〔To〕:?PERCENT/189Packing_QUsingPath90.00,Paint_QWithInspectorUsingPath10.00！產(chǎn)生隨機(jī)概率，以90％的概率通過檢測，使用路徑移向Packing_Q，進(jìn)行打包；以10％的概率檢測出油漆有質(zhì)量問題，需要人工搬運，通過路徑送回緩沖區(qū)Paint_Q，排隊重新油漆。PERCENT命令詳細(xì)說明參考WITNESS幫助文件。3.3〕對machine元素painting的詳細(xì)定義：屬性定義：?painting.Type=Single?painting.CycleTime=10.0規(guī)那么定義：painting.InputRules〔From〕:?PULLfromPaint_Q！從緩沖區(qū)Paint_Q中提取零件加工；painting.OutputRules〔To〕:?PUSHtoInspection_QUsingPath！通過路徑將成品送至緩沖區(qū)Inspection_Q；活動定義：painting.actionsonfinish：！下面這段程序?qū)崿F(xiàn)等概率將椅子油漆成紅、綠、黃三種顏色，并根據(jù)顏色對椅子設(shè)定屬性C＝“red〞、“green〞、“yellow〞。x=IUNIFORM(1,3,356)！隨機(jī)對變量x賦值；ICON=143IFx=1PEN=1C="red"ELSEIFx=2PEN=2C="green"ELSEPEN=3C="yellow"ENDIF3.4〕9〕對machine元素packing的詳細(xì)定義：屬性定義：?packing.Type=Assembly?packing.CycleTime=4.0?packing.InputQuantity=4規(guī)那么定義：packing.InputRules〔From〕:?MATCH/ATTRIBUTECPacking_Q#(4)！從緩沖區(qū)Packing_Q中提取4各屬性C相匹配的part，MATCH命令的用法參看WITNESS幫助文件；packing.OutputRules〔To〕:?PUSHtoSHIPUsingPath！使用路徑將打包好的part送出模型；活動定義：packing.actionsonfinish：ICON=1！指定一種代表四把同顏色椅子打包后的圖標(biāo)；IFC="red"PEN=1ELSEIFC="green"PEN=2ELSEPEN=3ENDIF4對path元素path的詳細(xì)定義：Path1屬性定義：path1.Pathtraversetime=15.0path1.Pathupdateinterval＝0.01path1.Sourceelement＝Assemblypath1.Destinationelement＝Paint_Qpath2的屬性定義：path2.Pathtraversetime=15.0path2.Pathupdateinterval＝0.01path2.Sourceelement＝Inspectionpath2.Destinationelement＝Packing_Qpath3的屬性定義：path3.Pathtraversetime=10.0path3.Pathupdateinterval＝0.01path3.Sourceelement＝Paintingpath3.Destinationelement＝Inspection_QPath4的屬性定義：path4.Pathtraversetime=10.0path4.Pathupdateinterval＝0.01path4.Sourceelement＝Inspectionpath4.Destinationelement＝Paint_QPath5的屬性定義：path5.Pathtraversetime=5.0path5.Pathupdateinterval＝0.01path5.Sourceelement＝Packingpath5.Destinationelement＝Ship五、實驗步驟1．Part元素可視化設(shè)置在窗口定義各part元素，鼠標(biāo)右鍵點擊Display，跳出Display對話框，設(shè)置它的name、Icon。2．Buffer元素可視化設(shè)置在窗口定義各個緩沖buffer元素，鼠標(biāo)右鍵點擊Display，跳出Display對話框，設(shè)置它的name、Icon、partqueue。3．Machine元素可視化設(shè)置在元素選擇窗口選擇各個機(jī)器元素，鼠標(biāo)右鍵點擊Display，跳出Display對話框，設(shè)置它的name、Icon。4.labor元素可視化設(shè)置在元素選擇窗口選擇inspector元素，鼠標(biāo)右鍵點擊Display，跳出Display對話框，設(shè)置它的name、Idle.path元素可視化設(shè)置分別選擇path1、path2、path3、path4、path5，設(shè)置它們的name屬性項和path屬性項，displaypath對話框如圖5.216.模型運行六、實驗結(jié)果〔數(shù)據(jù)報告〕運行1000分鐘的數(shù)據(jù)報告如下：Name No.Entered No.Shipped No.Scrapped No.Assembled No.Rejected W.I.P. AvgW.I.P. AvgTime SigmaRatingBack 217 20 0 60 284 137 94.34 434.73 6.00Name No.Entered No.Shipped No.Scrapped No.Assembled No.Rejected W.I.P. AvgW.I.P. AvgTime SigmaRatingSeat 217 0 0 166 284 51 46.97 216.43 6.00Name No.Entered No.Shipped No.Scrapped No.Assembled No.Rejected W.I.P. AvgW.I.P. AvgTime SigmaRatingSeat 217 0 0 166 284 51 46.97 216.43 6.00Name TotalIn TotalOut NowIn Max Min AvgSize AvgTime AvgDelayCount AvgDelayTimeB1 217 167 50 50 0 45.97 211.82 Name TotalIn TotalOut NowIn Max Min AvgSize AvgTime AvgDelayCount AvgDelayTimeB2 217 167 50 50 0 45.97 211.82 Name TotalIn TotalOut NowIn Max Min AvgSize AvgTime AvgDelayCount AvgDelayTimeB3 217 167 50 50 0 45.97 211.82 Name TotalIn TotalOut NowIn Max Min AvgSize AvgTime AvgDelayCount AvgDelayTimePaint_Q 174 98 76 76 0 36.93 212.23 Name TotalIn TotalOut NowIn Max Min AvgSize AvgTime AvgDelayCount AvgDelayTimeInspection_Q 96 96 0 1 0 0.00 0.00 Name TotalIn TotalOut NowIn Max Min AvgSize AvgTime AvgDelayCount AvgDelayTimePacking_Q 85 80 5 10 0 3.90 45.89 Name %Idle %Busy %Filling %Emptying %Blocked %CycleWaitLabor %Setup %SetupWaitLabor %BrokenDown %RepairWaitLabor No.OfOperationsAssembly 0.00 100.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 166Name %Idle %Busy %Filling %Emptying %Blocked %CycleWaitLabor %Setup %SetupWaitLabor %BrokenDown %RepairWaitLabor No.OfOperationsPainting 2.10 97.90 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 97Name %Idle %Busy %Filling %Emptying %Blocked %CycleWaitLabor %Setup %SetupWaitLabor %BrokenDown %RepairWaitLabor No.OfOperationsInspection 68.20 28.80 0.00 0.00 0.00 3.00 0.00 0.00 0.00 0.00 96Name %Idle %Busy %Filling %Emptying %Blocked %CycleWaitLabor %Setup %SetupWaitLabor %BrokenDown %RepairWaitLabor No.OfOperationsPacking 92.00 8.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 20Name PartsIn PartsO