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[求助] 本人初学auto mod,有一道题目希望大家赐教

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发表于 2009-10-3 15:08:34 | 显示全部楼层 |阅读模式
刚刚开始学auto mod,这道题目搞不明白,希望大家看看 题目是这样的,
' {9 ^" I5 b9 x4 U: ^3 Q/ l( K  Create a new model containing three independent processes, each with one operator. In each process, loads first move into an infinite capacity waiting queue, then into a single-capacity processing queue.& [3 e) p7 v4 X' l+ @
  Loads are processed by each operator for the following time:( P$ v+ z9 T7 C
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins." B: z, R6 u% s4 Z2 `1 U# D* s% i
  Worker_B does the job according to a triangular distribution with a min of 30 mins, most likely value of 60 mins, and a max of 90 mins.
! S2 r6 M4 L0 }  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
* @# t; v7 c) TSend loads to each pocess at the same rate (an exponentially distributed inter-arrival time with a mean of 68 mins) to understand the difference in the processing times of the three workers.
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7 o8 W# C" t$ c+ f3 O问题:# ?/ O; _6 x' d* x% P3 i8 M
After running the model for 10,000 days, what was the average number of loads in each process?. O# z3 [' c" s, B) C

5 t/ V& Y9 B1 ]  b+ n: t0 U不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
0 e! X' g* R6 v5 b8 _3 [6 k" Kmove into Q_wait /*Capacity is infinte*/7 z+ N( j+ ~+ Z2 B! f# f
move into Q_process /*Single capacity*/
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7 t' Z# v# m6 R" [- Quse R_A for n 60,10 min /*Resource A*/
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send to P_B
' L: p* F5 L0 n% ]+ aend9 g6 ^  \% k; G* m

( R8 `8 y1 E' L4 O" J( x- FP_B and P_C is similar
- k; ]! V! y: d3 d9 Htriangular 30,60,90 min
0 [/ u+ F7 U0 l9 W7 l6 K; su 60,30 min& y0 J2 c6 N" F1 t- \( x3 X4 g. ?

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4 W1 N1 H4 m; X) }9 z: L$ Ein P_C, you need to send to die.- t7 K5 S" p1 k8 j

1 u( w  ]. m) w/ CThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.* T& u. y( `6 o

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Remember to turn off the animation before you run your model.

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 楼主| 发表于 2009-10-27 23:53:02 | 显示全部楼层
thanks...
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