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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,4 Y2 l3 K& {/ f- `5 _. O( t5 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 }+ W% q% ]' o  Loads are processed by each operator for the following time:( [6 A$ T# K8 c8 x
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
- T# o) p% E9 a* b: Q. i+ F+ V) Y) h) z  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.
$ }- M3 S- ?! |5 b  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
/ ^+ V3 U+ C3 r7 N$ ?4 eSend 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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* A( x' V( [- o# t7 d! M问题:
3 F  _1 p" B( UAfter running the model for 10,000 days, what was the average number of loads in each process?' x/ @0 D8 o1 H( Y5 {

; e: a3 O( R, I. u不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
; }& S2 }% {! R; X8 imove into Q_wait /*Capacity is infinte*// r$ n- ]- ~) T! U
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
3 h' x% m: z- A. B9 P) B! oend7 a5 ?% D0 `  Z

. n2 v7 j5 a0 {1 _P_B and P_C is similar
: k! u+ f. v, f; M4 L  Qtriangular 30,60,90 min0 }2 K' J2 C! u& Y* _
u 60,30 min
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in P_C, you need to send to die.
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' L+ Y5 v/ |4 ]2 g$ ]& y2 P  UThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.1 x: W5 m/ P. ~

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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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