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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,( u: ?5 A- |* i7 ]
  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.
" q, o  ]" a6 P. V. a# W  Loads are processed by each operator for the following time:. n+ B& e* v' B
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
3 a; @& k- Q* {" Z" s, O  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.4 I: S9 P. T' i. R
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.0 I$ [5 l+ H1 H4 D: E
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.4 J6 ~; f2 q( X( h1 @
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问题:
2 o+ W* O/ G" F5 Q' ~: l8 hAfter running the model for 10,000 days, what was the average number of loads in each process?% R$ m* H6 w4 `- B9 I8 M% ~- {

( D9 p2 h! Z, ^不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving% k$ H! d% z) \8 J! E$ t1 w
move into Q_wait /*Capacity is infinte*/8 z( ]# t# U* r9 ~6 n! J/ ^
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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& ^& R4 v! o' Q3 R) ]' ^send to P_B
& o5 e* g5 _: ?: w  {! L( S3 rend
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8 U5 n  f/ q4 \9 ]* ?% r# JP_B and P_C is similar0 i3 g" v. p4 f. W, f
triangular 30,60,90 min
1 S- `% `7 {" L' U. A* O9 su 60,30 min
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in P_C, you need to send to die.4 b6 t# o9 d! z  M% X" k# u
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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.6 v% x/ d1 E3 s7 [, T

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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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