【文章內(nèi)容簡(jiǎn)介】 t !返回變量sumcost給目標(biāo)函數(shù)5．仿真運(yùn)行與結(jié)果分析我們現(xiàn)在采用如下兩種配置，來(lái)運(yùn)行該仿真模型，仿真時(shí)間為一年（即365*1440分鐘）。 項(xiàng)目方案車輛名稱載重量（噸）隨車人員（人）時(shí)間懲罰因子方案一Dumpcart(1)312Dumpcart(2)12方案二Dumpcart(1)532Dumpcart(2)32其它的項(xiàng)目在兩個(gè)方案中的值完全相同，參見前面的表格。通過(guò)仿真運(yùn)行后得到如下數(shù)據(jù)：方案運(yùn)行距離km運(yùn)行時(shí)間h時(shí)間成本萬(wàn)元收集時(shí)間h卸載時(shí)間h可變成本萬(wàn)元固定成本萬(wàn)元人員工資萬(wàn)元總成本萬(wàn)元總成本萬(wàn)元一Dumpcart(1)7369123107444075Dumpcart(2)743362263813217二Dumpcart(1)546571366342157763Dumpcart(2)5448912922332865 為了更清晰的比較兩種方案的成本參數(shù)，將上表的數(shù)據(jù)繪制成直方圖如下：從成本數(shù)據(jù)比較圖上可以看出，當(dāng)采用方案二時(shí)，車輛噸位數(shù)和隨車人員的增加，使得固定成本、人員工資都比方案一要大；同時(shí)，回收速度要比方案一快的多，使得可變成本和居民滿意度較高；時(shí)間懲罰成本低于零，即取得了很好的市場(chǎng)評(píng)價(jià)和公司品牌效應(yīng)。在這兩種方案下。從運(yùn)行參數(shù)比較圖上可以看出，兩種方案的物流成本差異收集時(shí)間、卸載時(shí)間、運(yùn)行時(shí)間、運(yùn)行距離的差異引起的。由于方案一的車輛噸位和隨車人員都比方案二要少，所以同是收集等量垃圾，它的收集時(shí)間和卸載時(shí)間都比方案二長(zhǎng)，它的收集次數(shù)要比方案二多，即運(yùn)行距離比方案二長(zhǎng)。附：以上程序當(dāng)中所涉及的函數(shù)介紹如下MODEL INFORMATION: Model Name: dumpreverse Model Title: the simulation for reverse logistics Model Author: jiannywang, NUAA Creation Date: Sun Mar 10 09:26:20 2004Initial Actions: XLReadArray (\\,input,$B$3:$B$9,personum) FOR num = 1 TO 7 meandump (num) = * personum (num) * 1000 NEXTELEMENT NAME: dump1Element Type: PartType: Variable attributesGroup number: 1Inter Arrival Time: First Arrival at: Maximum Arrivals: UnlimitedInput / Output Rules Output: PUSH to dump001(1)Actions Create: IF IUNIFORM (1,3,101) = 1 dumpreusable = yes ELSE dumpreusable = no ENDIF moddemand (1) = MOD (moddemand (1),cartcapacity) + 1 IF moddemand (1) = cartcapacity moddemand (1) = 0 ENDIF_____________________________________________________________ELEMENT NAME: dump1aElement Type: PartType: Variable attributesGroup number: 1Inter Arrival Time: First Arrival at: Maximum Arrivals: UnlimitedInput / Output Rules Output: PUSH to dump001a(1)Actions Create: IF IUNIFORM (1,3,101) = 1 dumpreusable = yes ELSE dumpreusable = no ENDIF moddemand (1) = MOD (moddemand (1),cartcapacity) + 1 IF moddemand (1) = cartcapacity moddemand (1) = 0 ENDIF_____________________________________________________________ELEMENT NAME: dump2Element Type: PartType: Variable attributesGroup number: 1Inter Arrival Time: First Arrival at: Maximum Arrivals: UnlimitedInput / Output Rules Output: PUSH to dump002(1)Actions Create: moddemand (2) = MOD (moddemand (2),cartcapacity) + 1 IF moddemand (2) = cartcapacity moddemand (2) = 0 ENDIF_____________________________________________________________ELEMENT NAME: dump2aElement Type: PartType: Variable attributesGroup number: 1Inter Arrival Time: First Arrival at: Maximum Arrivals: UnlimitedInput / Output Rules Output: PUSH to dump002a(1)Actions Create: moddemand (2) = MOD (moddemand (2),cartcapacity) + 1 IF moddemand (2) = cartcapacity moddemand (2) = 0 ENDIF_____________________________________________________________ELEMENT NAME: dump3Element Type: PartType: Variable attributesGroup number: 1Inter Arrival Time: First Arrival at: Maximum Arrivals: UnlimitedInput / Output Rules Output: PUSH to dump003(1)Actions Create: moddemand (3) = MOD (moddemand (3),cartcapacity) + 1 IF moddemand (3) = cartcapacity moddemand (3) = 0 ENDIF_____________________________________________________________ELEMENT NAME: dump3aElement Type: PartType: Variable attributesGroup number: 1Inter Arrival Time: First Arrival at: Maximum Arrivals: UnlimitedInput / Output Rules Output: PUSH to dump003a(1)Actions Create: moddemand (3) = MOD (moddemand (3),cartcapacity) + 1 IF moddemand (3) = cartcapacity moddemand (3) = 0 ENDIF_____________________________________________________________ELEMENT NAME: dump4Element Type: PartType: Variable attributesGroup number: 1Inter Arrival Time: First Arrival at: Maximum Arrivals: UnlimitedInput / Output Rules Output: PUSH to dump004(1)Actions Create: moddemand (4) = MOD (moddemand (4),cartcapacity) + 1 IF moddemand (4) = cartcapacity moddemand (4) = 0 ENDIF_____________________________________________________________ELEMENT NAME: dump4aElement Type: PartType: Variable attributesGroup number: 1Inter Arrival Time: First Arrival at: Maximum Arrivals: UnlimitedInput / Output Rules Output: PUSH to dump004a(1)Actions Create: moddemand (4) = MOD (moddemand (4),cartcapacity) + 1 IF moddemand (4) = cartcapacity moddemand (4) = 0 ENDIF_____________________________________________________________ELEMENT NAME: dump5Element Type: PartType: Variable attributesGroup number: 1Inter Arrival Time: First Arrival at: Maximum Arrivals: UnlimitedInput / Output Rules Output: PUSH to dump005(1)Actions Create: moddemand (5) = MOD (moddemand (5),cartcapacity) + 1 IF moddemand (5) = cartcapacity moddemand (5) = 0 ENDIF_____________________________________________________________ELEMENT NAME: dump5aElement Type: PartType: Variable attributesGroup number: 1Inter Arrival Time: First Arrival at: Maximum Arrivals: UnlimitedInput / Output Rules Output: PUSH to dump005a(1)Actions Create: moddemand (5) = MOD (moddemand (5),cartcapacity) + 1 IF moddemand (5) = cartcapacity moddemand (5) = 0 ENDIF_____________________________________________________________ELEMENT NAME: dump6Element Type: PartType: Variable attributesGroup number: 1Inter Arrival Time: First Arrival at: Maximum Arrivals: UnlimitedInput / Output Rules Output: PUSH to dump006(1)Actions Create: moddemand (6) = MOD (moddemand (6),cartcapacity) + 1 IF moddemand (6) = cartcapacity moddemand (6) = 0 ENDIF______