witness上機報告.docx

Witness上機報告第一題某港口只有一個岸橋為到達的船舶提供卸貨服務。當船舶到達港口時，停入泊位等待服務。如果岸橋空閑，則立即對其進行貨物卸載作業(yè)；如果岸橋為其他船舶卸載，則船舶在泊位等待；岸橋為船舶提供服務的規(guī)則為FIFO。 假設船舶到達時間間隔服從均值為10小時的負指數(shù)分布，岸橋為每艘船的卸載時間服從6,14小時的均勻分布。設施布置圖：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: 岸橋Element Type:MachineQuantity: 1Priority:LowestType:SingleCycle Time:UNIFORM (6,14)Input / Output RulesInput:PULL from 泊位Output:PUSH to SHIP_運行模型：結果分析：岸橋利用率：96.21%船舶的平均等待時間：66.56港口船舶等待隊列的最大長度：20服務船舶數(shù)量：232第二題1. 船舶到達時發(fā)現(xiàn)港口中已經(jīng)有4艘船舶在等待，則選擇離開設施布置圖：REPORT:ELEMENT NAME: 泊位Element Type:BufferQuantity: 1Capacity:4Input Option:RearOutput Option:FirstSearch From:Front_2. 船舶等待時間超出30小時，則選擇進行服務投訴設施布置圖：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 投訴區(qū)_ELEMENT NAME: 投訴區(qū)Element Type:BufferQuantity: 1Capacity:1000Input Option:RearOutput Option:FirstSearch From:Front_ELEMENT NAME: 岸橋Element Type:MachineQuantity: 1Priority:LowestType:SingleCycle Time:UNIFORM (6,14)Input / Output RulesInput:PULL from 投訴區(qū),泊位Output:PUSH to SHIP_結果分析：系統(tǒng)100天中接受到的投訴數(shù)量：1633. 港口增加了一臺岸橋?qū)Υ斑M行服務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: 岸橋Element Type:MachineQuantity: 2Priority:LowestType:SingleCycle Time:UNIFORM (6,14)Input / Output RulesInput:PULL from 泊位Output:PUSH to SHIP_第三題設施布置圖：REPORT:ELEMENT NAME: 零件Element Type:PartType:Variable attributesGroup number:1Maximum Arrivals:0_ELEMENT NAME: 稱重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: 檢查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運行模型：第四題三種類型的零件A、B、C隨機到達系統(tǒng)，分別暫存于倉庫的特定庫區(qū)，有一裝配機器將1個A、2個B和1個C組裝一個成品D，放入專有緩沖區(qū)中；其中：l A零件到達時間間隔為5分鐘，批量為1，第一個零件在0時刻到達；l B零件到達時間間隔為4分鐘，批量為2，第一個零件在10時刻點到到；l C零件到達時間間隔為6分鐘，批量為1，第一個零件在0時刻到達，該零件總量為20；l 裝配機器對零件的提取順序為先取A、再取B、再取C；裝配機器的組裝時間為6分鐘設施布置圖：REPORT:ELEMENT NAME: AElement Type:PartType:Variable attributesGroup number:2Inter Arrival Time:5.0First Arrival at:0.0Maximum Arrivals:UnlimitedInput / Output RulesOutput:PUSH to 倉庫(1)_ELEMENT NAME: BElement Type:PartType:Variable attributesGroup number:1Inter Arrival Time:4.0First Arrival at:10.0Maximum Arrivals:UnlimitedInput / Output RulesOutput:PUSH to 倉庫(2)_ELEMENT NAME: CElement Type:PartType:Variable attributesGroup number:1Inter Arrival Time:6.0First Arrival at:0.0Maximum Arrivals:20Input / Output RulesOutput:PUSH to 倉庫(3)_ELEMENT NAME: DElement Type:PartType:Variable attributesGroup number:1Maximum Arrivals:0_ELEMENT NAME: 倉庫Element Type:BufferQuantity: 3Capacity:1000Input Option:RearOutput Option:FirstSearch From:Front_ELEMENT NAME: 機器Element Type:MachineQuantity: 1Priority:LowestType:AssemblyAssembly Qty:4Cycle Time:6.0Input / Output RulesInput:SEQUENCE /Wait 倉庫(1)#(1),倉庫(2)#(2),倉庫(3)#(1)Output:BUFFER (30)ActionsFinish:CHANGE ALL to D_第五題有一個制造車間由5組機器加工三種產(chǎn)品A,B.C。每種產(chǎn)品分別要求完成 4道、3道和5道工序，而每道工序必須在指定的機器組上，按照事先規(guī)定好的工藝順序進行。第1，2，3，4，5組機器分別有3，2，4，3，1臺相同的機器，A,B.C三種產(chǎn)品原料到達車間的間隔時間分別服從均值為 50，30，75 分鐘的負指數(shù)型分布。三種產(chǎn)品的工藝路線如下表所示。l 即第1種作業(yè)首先在第 3 組機器上加工，然后在第 1 組、再在第 2 組機器上加工，最后在第 5 組機器上完成最后工序。如果一項作業(yè)在特定時間到達車間，發(fā)現(xiàn)該組機器全都忙著，該作業(yè)就在該組機器處排入一個 FIFO 規(guī)則的隊列。在特定機器上完成一個工序的時間是一種二階愛爾朗分布的隨機變量，它的平均值取決于作業(yè)的類別以及機器的組別（用Erlang(R-cycle,2,1)實現(xiàn)）。l 模擬一周（5*480=2400分鐘）的時間，計算每種產(chǎn)品在系統(tǒng)中的作業(yè)總平均時間，以及每組機器隊列中的平均作業(yè)數(shù)、平均利用率及平均等待時間。并試圖進行改善。設施布置圖：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: 機器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: 機器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: 機器3Elem