witness上机报告.docx

Witness上机报告第一题某港口只有一个岸桥为到达的船舶提供卸货服务。当船舶到达港口时，停入泊位等待服务。如果岸桥空闲，则立即对其进行货物卸载作业；如果岸桥为其他船舶卸载，则船舶在泊位等待；岸桥为船舶提供服务的规则为FIFO。 假设船舶到达时间间隔服从均值为10小时的负指数分布，岸桥为每艘船的卸载时间服从6,14小时的均匀分布。设施布置图：REPORT:ELEMENT NAME: 船舶Element Type:PartType:Variable attributesGroup number:1Inter Arrival Time:NEGEXP (10)First Arrival at:0.0Maximum Arrivals:UnlimitedInput / Output RulesOutput:PUSH to 泊位_ELEMENT NAME: 泊位Element Type:BufferQuantity: 1Capacity:1000Input Option:RearOutput Option:FirstSearch From:Front_ELEMENT NAME: 岸桥Element Type:MachineQuantity: 1Priority:LowestType:SingleCycle Time:UNIFORM (6,14)Input / Output RulesInput:PULL from 泊位Output:PUSH to SHIP_运行模型：结果分析：岸桥利用率：96.21%船舶的平均等待时间：66.56港口船舶等待队列的最大长度：20服务船舶数量：232第二题1. 船舶到达时发现港口中已经有4艘船舶在等待，则选择离开设施布置图：REPORT:ELEMENT NAME: 泊位Element Type:BufferQuantity: 1Capacity:4Input Option:RearOutput Option:FirstSearch From:Front_2. 船舶等待时间超出30小时，则选择进行服务投诉设施布置图：REPORT:ELEMENT NAME: 船Element Type:PartType:Variable attributesGroup number:1Inter Arrival Time:NEGEXP (10)First Arrival at:0.0Maximum Arrivals:UnlimitedInput / Output RulesOutput:PUSH to 泊位_ELEMENT NAME: 泊位Element Type:BufferQuantity: 1Capacity:1000Delay Mode:MaximumMax Time in:30.0Input Option:RearOutput Option:FirstSearch From:FrontInput / Output RulesOn max delay:PUSH to 投诉区_ELEMENT NAME: 投诉区Element Type:BufferQuantity: 1Capacity:1000Input Option:RearOutput Option:FirstSearch From:Front_ELEMENT NAME: 岸桥Element Type:MachineQuantity: 1Priority:LowestType:SingleCycle Time:UNIFORM (6,14)Input / Output RulesInput:PULL from 投诉区,泊位Output:PUSH to SHIP_结果分析：系统100天中接受到的投诉数量：1633. 港口增加了一台岸桥对船舶进行服务REPORT:ELEMENT NAME: 船Element Type:PartType:Variable attributesGroup number:1Inter Arrival Time:NEGEXP (10)First Arrival at:0.0Maximum Arrivals:UnlimitedInput / Output RulesOutput:PUSH to 泊位_ELEMENT NAME: 泊位Element Type:BufferQuantity: 1Capacity:1000Input Option:RearOutput Option:FirstSearch From:Front_ELEMENT NAME: 岸桥Element Type:MachineQuantity: 2Priority:LowestType:SingleCycle Time:UNIFORM (6,14)Input / Output RulesInput:PULL from 泊位Output:PUSH to SHIP_第三题设施布置图：REPORT:ELEMENT NAME: 零件Element Type:PartType:Variable attributesGroup number:1Maximum Arrivals:0_ELEMENT NAME: 称重Element Type:MachineQuantity: 1Priority:LowestType:SingleCycle Time:NEGEXP (5)Input / Output RulesInput:PULL from 零件 out of WORLDOutput:PUSH to C1 at Rear_ELEMENT NAME: 清洗Element Type:MachineQuantity: 1Priority:LowestType:SingleCycle Time:NEGEXP (4.5)Input / Output RulesInput:PULL from C1 at FrontOutput:PUSH to C2 at RearLabor RequirementsSetup #1: 工人Set-upDescription:New SetupSet-up type:OperationsOps to First:UndefinedOps between:10Set-up Time:NEGEXP (8,1)_ELEMENT NAME: 加工Element Type:MachineQuantity: 1Priority:LowestType:SingleCycle Time:NEGEXP (4)Input / Output RulesInput:PULL from C2 at FrontOutput:PUSH to C3 at RearLabor RequirementsRepair #1:工人Repair #2:工人BreakdownDescription:New BreakdownBreakdown type:Busy TimeAt Start of Cycle:YesDown Interval:50.0Repair Time:NEGEXP (10)Scrap Part:NoSet-up on repair:NoBreakdownDescription:New BreakdownBreakdown type:Busy TimeAt Start of Cycle:YesDown Interval:NEGEXP (100,5)Repair Time:NEGEXP (30,1)Scrap Part:NoSet-up on repair:No_ELEMENT NAME: 检查Element Type:MachineQuantity: 1Priority:LowestType:SingleCycle Time:NEGEXP (3)Input / Output RulesInput:PULL from C3 at FrontOutput:PUSH to SHIP_ELEMENT NAME: C1Element Type:ConveyorQuantity: 1Priority:LowestType:QueuingLength:20Maximum Capacity:20Index Time:0.5_ELEMENT NAME: C2Element Type:ConveyorQuantity: 1Priority:LowestType:QueuingLength:20Maximum Capacity:20Index Time:0.5_ELEMENT NAME: C3Element Type:ConveyorQuantity: 1Priority:LowestType:QueuingLength:20Maximum Capacity:20Index Time:0.5_ELEMENT NAME: 工人Element Type:LaborQuantity always available:1运行模型：第四题三种类型的零件A、B、C随机到达系统，分别暂存于仓库的特定库区，有一装配机器将1个A、2个B和1个C组装一个成品D，放入专有缓冲区中；其中：l A零件到达时间间隔为5分钟，批量为1，第一个零件在0时刻到达；l B零件到达时间间隔为4分钟，批量为2，第一个零件在10时刻点到到；l C零件到达时间间隔为6分钟，批量为1，第一个零件在0时刻到达，该零件总量为20；l 装配机器对零件的提取顺序为先取A、再取B、再取C；装配机器的组装时间为6分钟设施布置图：REPORT:ELEMENT NAME: AElement Type:PartType:Variable attributesGroup number:2Inter Arrival Time:5.0First Arrival at:0.0Maximum Arrivals:UnlimitedInput / Output RulesOutput:PUSH to 仓库(1)_ELEMENT NAME: BElement Type:PartType:Variable attributesGroup number:1Inter Arrival Time:4.0First Arrival at:10.0Maximum Arrivals:UnlimitedInput / Output RulesOutput:PUSH to 仓库(2)_ELEMENT NAME: CElement Type:PartType:Variable attributesGroup number:1Inter Arrival Time:6.0First Arrival at:0.0Maximum Arrivals:20Input / Output RulesOutput:PUSH to 仓库(3)_ELEMENT NAME: DElement Type:PartType:Variable attributesGroup number:1Maximum Arrivals:0_ELEMENT NAME: 仓库Element Type:BufferQuantity: 3Capacity:1000Input Option:RearOutput Option:FirstSearch From:Front_ELEMENT NAME: 机器Element Type:MachineQuantity: 1Priority:LowestType:AssemblyAssembly Qty:4Cycle Time:6.0Input / Output RulesInput:SEQUENCE /Wait 仓库(1)#(1),仓库(2)#(2),仓库(3)#(1)Output:BUFFER (30)ActionsFinish:CHANGE ALL to D_第五题有一个制造车间由5组机器加工三种产品A,B.C。每种产品分别要求完成 4道、3道和5道工序，而每道工序必须在指定的机器组上，按照事先规定好的工艺顺序进行。第1，2，3，4，5组机器分别有3，2，4，3，1台相同的机器，A,B.C三种产品原料到达车间的间隔时间分别服从均值为 50，30，75 分钟的负指数型分布。三种产品的工艺路线如下表所示。l 即第1种作业首先在第 3 组机器上加工，然后在第 1 组、再在第 2 组机器上加工，最后在第 5 组机器上完成最后工序。如果一项作业在特定时间到达车间，发现该组机器全都忙着，该作业就在该组机器处排入一个 FIFO 规则的队列。在特定机器上完成一个工序的时间是一种二阶爱尔朗分布的随机变量，它的平均值取决于作业的类别以及机器的组别（用Erlang(R-cycle,2,1)实现）。l 模拟一周（5*480=2400分钟）的时间，计算每种产品在系统中的作业总平均时间，以及每组机器队列中的平均作业数、平均利用率及平均等待时间。并试图进行改善。设施布置图：REPORT:ELEMENT NAME: AElement Type:PartType:Variable attributesGroup number:1Inter Arrival Time:NEGEXP (50)First Arrival at:0.0Maximum Arrivals:UnlimitedInput / Output RulesOutput:PUSH to ROUTE_ELEMENT NAME: BElement Type:PartType:Variable attributesGroup number:1Inter Arrival Time:NEGEXP (30)First Arrival at:0.0Maximum Arrivals:UnlimitedInput / Output RulesOutput:PUSH to ROUTE_ELEMENT NAME: CElement Type:PartType:Variable attributesGroup number:1Inter Arrival Time:NEGEXP (75)First Arrival at:0.0Maximum Arrivals:UnlimitedInput / Output RulesOutput:PUSH to ROUTE_ELEMENT NAME: Buffers001Element Type:BufferQuantity: 1Capacity:1000Input Option:RearOutput Option:FirstSearch From:Front_ELEMENT NAME: 机器1Element Type:MachineQuantity: 3Priority:LowestType:SingleCycle Time:ERLANG (R_CYCLE,2,1)Input / Output RulesInput:PULL from Buffers001Output:PUSH to ROUTE_ELEMENT NAME: Buffers002Element Type:BufferQuantity: 1Capacity:1000Input Option:RearOutput Option:FirstSearch From:Front_ELEMENT NAME: 机器2Element Type:MachineQuantity: 2Priority:LowestType:SingleCycle Time:ERLANG (R_CYCLE,2,2)Input / Output RulesInput:PULL from Buffers002Output:PUSH to ROUTE_ELEMENT NAME: Buffers003Element Type:BufferQuantity: 1Capacity:1000Input Option:RearOutput Option:FirstSearch From:Front_ELEMENT NAME: 机器3Elem