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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,
2 ^$ B2 R7 g8 r! {$ T  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.1 F  K" [( J7 q4 G" I
  Loads are processed by each operator for the following time:
5 M& F# k) z6 z, a; o5 l  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
5 J0 C! A% V) @: ~& p8 O) p  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 ?4 R. S) q$ z  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.; k. D; E: X6 w: D+ h
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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问题:8 X3 s* i: @0 E5 e3 G
After running the model for 10,000 days, what was the average number of loads in each process?, M' N2 h& b, q

9 G9 {- {( W( Y) C, p" k8 s不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving6 _/ L8 g. C+ E/ O
move into Q_wait /*Capacity is infinte*/9 H9 z+ C- L. {6 s# U0 i
move into Q_process /*Single capacity*/& ?, A* u5 B& A! Z6 ?
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use R_A for n 60,10 min /*Resource A*/
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. m" F. q. {8 _* E) ?+ Bsend to P_B* ?# }5 U, n$ c) k3 ^) D& Z% k0 F
end
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4 x5 f- a. o( r* e6 AP_B and P_C is similar
* Z: Q" S7 c; h! C; b0 ]8 `0 qtriangular 30,60,90 min
1 T; c7 o5 r: Q, x6 L, }0 N& au 60,30 min
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6 J* A5 j2 R7 v- [$ D" K+ F' ~in P_C, you need to send to die.
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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.
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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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