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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,: |8 c4 ^" {$ w7 a
  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.% x+ W6 J- |7 Z4 p
  Loads are processed by each operator for the following time:
9 ^/ {+ c4 Y+ ^* t2 x3 G. ~/ H  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
# |2 n1 X1 R1 N  Y7 P, q  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.
# ?" ]0 Q" h4 s* x# R! Y6 X  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
* C8 h' b2 f1 ^+ A& ?2 Q9 p# _" d# ^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.0 [: z# l; B1 N
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问题:2 Z( L2 `# S& P
After running the model for 10,000 days, what was the average number of loads in each process?
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不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving; ~- C4 b7 D( o9 D
move into Q_wait /*Capacity is infinte*/4 @/ R0 N8 F$ [! j0 X
move into Q_process /*Single capacity*/( U8 W5 {2 S0 a8 ~
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use R_A for n 60,10 min /*Resource A*/" R5 A6 \" C" W& P7 B3 h

, Z2 T+ K! \1 p* |( ?, usend to P_B) j. C1 a6 f6 g- y9 B
end
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# o5 n& F1 R6 o. s, Q' C- L. TP_B and P_C is similar: J% t/ b$ Z" [0 G( h6 z
triangular 30,60,90 min
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4 P7 D/ l/ D& b, Qin P_C, you need to send to die.$ B" U: \; D2 J7 G

3 d3 y0 W% F* v0 E/ ZThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days." s. u7 h+ D! L
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- ~  S7 c: M; ?- }) QRemember 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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