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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,
3 b" q" @$ T8 O6 c6 Q  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.( T' m( E7 O* o  z, W/ X" D* a
  Loads are processed by each operator for the following time:
5 r3 e# n# S8 s% c1 l  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
8 U9 Y5 y, S6 Q% r7 f  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.- ^: @) [: F. K1 h9 S  G
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.7 I! R/ ?, E/ L: F( k8 Y4 W5 H4 V* W
Send 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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9 H- C4 i4 J+ F  L问题:$ d) ~0 G/ A4 w1 J* ~# f
After running the model for 10,000 days, what was the average number of loads in each process?
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3 `3 L# q4 R5 x: z不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
2 ^' I7 W; a1 m- Kmove into Q_wait /*Capacity is infinte*/) L1 r* F( P$ f
move into Q_process /*Single capacity*/
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4 S$ n0 I. q5 G+ j/ J% a& K. P) Kuse R_A for n 60,10 min /*Resource A*/+ P7 {6 h+ p! i5 _8 g

$ Y3 W* a- R1 E& {send to P_B
2 A# f5 X& u6 g' ?. Z2 D1 o4 p. Aend. i& Z( ^6 `( a/ X1 A. R
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P_B and P_C is similar
6 p5 n( O. F; S1 Ytriangular 30,60,90 min
$ c4 u" f5 F, Y! l4 t$ J# Nu 60,30 min. `" f$ E/ u" o8 v

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( s4 M7 b5 B& y7 B  P2 Pin P_C, you need to send to die.2 v) Z4 g: }) a4 @/ H
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Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.3 y4 Y  c8 M0 Q, n% H- C) V
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$ n. u2 u2 _7 B; ?$ }9 ZRemember 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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