基于witness的系统建模与仿真实验报告

多路径生产仿真模型实验名称：多路径生产仿真模型二、实验目的1〕了解结合路径path的系统设计。2〕熟悉系统元素Part、Machine、Buffer、Variable、Labor、Attribute的用法。3〕深入研究系统元素Machine的用法。4〕研究机器、缓冲区结合路径以及劳动者之间协作所形成系统的运行效率。三、实验设备仪器计算机、Witness仿真软件四、实验内容1、元素定义〔Define〕本系统的元素定义如表1所示。表1实体元素定义元素名称类型数量说明BackPart1部件SeatPart1部件LegsPart1部件B1buffer1缓冲区B2buffer1缓冲区B3buffer1缓冲区Paint_Qbuffer1缓冲区Inspection_Qbuffer1缓冲区Packing_Qbuffer1缓冲区path1Path1路径Path2Path1路径Path3Path1路径Path4Path1路径Path5Path1路径Assemblymachine1组装机器Paintingmachine1染色机器Inspectionmachine1检验机器Packingmachine1包装机器Inspectorlabor1质检员xvariable1变量attributec1属性2、元素可视化〔Display〕设置各个实体元素的显示特征定义设置如下列图所示3、元素细节〔Detail〕设计1对Part各元素细节设计可视化效果设定属性定义：seat.ArrivalType＝ActiveerArrival=2.0back.ArrivalType＝ActiveerArrival=2.0legs.ArrivalType＝ActiveerArrival=2.0规那么定义：seat’soutputRules：PUSHtoB1back’soutputRules：PUSHtoB2legs’outputRules：PUSHtoB32对Buffer各元素细节设计display选项中对话框对buffericon、name、partqueue属性进行设置；3对Machine各元素的细节设计属性定义：Assembly.Type=AssemblyAssembly.CycleTime=6.0Assembly.InputQuantity=3；！机器Assembly的输入零部件数量为3个；规那么定义：Assembly.InputRules〔From〕:MATCH/ANYB1#(1)B2#(1)B3#(1)！匹配缓冲区B1、B2、B3中的任意类型的part各一个；Assembly.OutputRules〔To〕:PUSHtoPaint_QUsingPath！通过路径将成品送至缓冲区Paint_Q；活动定义：Assembly.actionsonfinish：3.1〕对machine元素Assembly的详细定义：属性定义：♦Assembly.Type=Assembly♦Assembly.CycleTime=6.0♦Assembly.InputQuantity=3；！机器Assembly的输入零部件数量为3个；规那么定义：Assembly.InputRules〔From〕:♦MATCH/ANYB1#(1)B2#(1)B3#(1)！匹配缓冲区B1、B2、B3中的任意类型的part各一个；Assembly.OutputRules〔To〕:♦PUSHtoPaint_QUsingPath！通过路径将成品送至缓冲区Paint_Q；活动定义：Assembly.actionsonfinish：♦ICON=115！通过变换图标，表示seat、back、legs组装成了一把白色椅子；3.2〕对machine元素inspection的详细定义：属性定义：♦inspection.Type=Single♦inspection.CycleTime=3.0♦inspection.labor＝Inspector规那么定义：inspection.InputRules〔From〕:♦PULLfromInspection_Q！从缓冲区Inspection_Q中提取零件加工；inspection.OutputRules〔To〕:♦PERCENT/189Packing_QUsingPath90.00,Paint_QWithInspectorUsingPath10.00！产生随机概率，以90％的概率通过检测，使用路径移向Packing_Q，进行打包；以10％的概率检测出油漆有质量问题，需要人工搬运，通过路径送回缓冲区Paint_Q，排队重新油漆。PERCENT命令详细说明参考WITNESS帮助文件。3.3〕对machine元素painting的详细定义：属性定义：♦painting.Type=Single♦painting.CycleTime=10.0规那么定义：painting.InputRules〔From〕:♦PULLfromPaint_Q！从缓冲区Paint_Q中提取零件加工；painting.OutputRules〔To〕:♦PUSHtoInspection_QUsingPath！通过路径将成品送至缓冲区Inspection_Q；活动定义：painting.actionsonfinish：！下面这段程序实现等概率将椅子油漆成红、绿、黄三种颜色，并根据颜色对椅子设定属性C＝“red〞、“green〞、“yellow〞。x=IUNIFORM(1,3,356)！随机对变量x赋值；ICON=143IFx=1PEN=1C="red"ELSEIFx=2PEN=2C="green"ELSEPEN=3C="yellow"ENDIF3.4〕9〕对machine元素packing的详细定义：属性定义：♦packing.Type=Assembly♦packing.CycleTime=4.0♦packing.InputQuantity=4规那么定义：packing.InputRules〔From〕:♦MATCH/ATTRIBUTECPacking_Q#(4)！从缓冲区Packing_Q中提取4各属性C相匹配的part，MATCH命令的用法参看WITNESS帮助文件；packing.OutputRules〔To〕:♦PUSHtoSHIPUsingPath！使用路径将打包好的part送出模型；活动定义：packing.actionsonfinish：ICON=1！指定一种代表四把同颜色椅子打包后的图标；IFC="red"PEN=1ELSEIFC="green"PEN=2ELSEPEN=3ENDIF4对path元素path的详细定义：Path1属性定义：path1.Pathtraversetime=15.0path1.Pathupdateinterval＝0.01path1.Sourceelement＝Assemblypath1.Destinationelement＝Paint_Qpath2的属性定义：path2.Pathtraversetime=15.0path2.Pathupdateinterval＝0.01path2.Sourceelement＝Inspectionpath2.Destinationelement＝Packing_Qpath3的属性定义：path3.Pathtraversetime=10.0path3.Pathupdateinterval＝0.01path3.Sourceelement＝Paintingpath3.Destinationelement＝Inspection_QPath4的属性定义：path4.Pathtraversetime=10.0path4.Pathupdateinterval＝0.01path4.Sourceelement＝Inspectionpath4.Destinationelement＝Paint_QPath5的属性定义：path5.Pathtraversetime=5.0path5.Pathupdateinterval＝0.01path5.Sourceelement＝Packingpath5.Destinationelement＝Ship五、实验步骤1．Part元素可视化设置在窗口定义各part元素，鼠标右键点击Display，跳出Display对话框，设置它的name、Icon。2．Buffer元素可视化设置在窗口定义各个缓冲buffer元素，鼠标右键点击Display，跳出Display对话框，设置它的name、Icon、partqueue。3．Machine元素可视化设置在元素选择窗口选择各个机器元素，鼠标右键点击Display，跳出Display对话框，设置它的name、Icon。4.labor元素可视化设置在元素选择窗口选择inspector元素，鼠标右键点击Display，跳出Display对话框，设置它的name、Idle.path元素可视化设置分别选择path1、path2、path3、path4、path5，设置它们的name属性项和path属性项，displaypath对话框如图5.216.模型运行六、实验结果〔数据报告〕运行1000分钟的数据报告如下：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