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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,. ?9 D( b# v2 O( }" H
  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.
9 w2 J4 @% B9 ]% r/ R: W  M! o  Loads are processed by each operator for the following time:/ a4 H7 s& m( x" Y( w; j$ G6 a
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
6 O7 ]  r# x6 e0 @! o6 Y; R  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.$ U6 ]# Q! U4 f+ R
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
8 w# m- O2 i# B' P3 N' W5 a$ O2 ~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:
1 u3 c7 o% w8 j/ `After running the model for 10,000 days, what was the average number of loads in each process?
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  F. `6 ~: p: s# h+ ^4 N' x3 `不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
7 P. r* B9 E& {5 gmove into Q_wait /*Capacity is infinte*/: c9 H5 M* V! K+ k2 ?
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/! d  {' C! o1 S' {( g+ S

- Z* w: X; a1 Tsend to P_B  _4 ~5 b# j9 T) u( ]
end* b) X( @9 Z1 [
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P_B and P_C is similar
$ p! ~% w! W5 G- s( striangular 30,60,90 min* s( _1 n6 F8 B4 t9 K
u 60,30 min
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4 [1 v! h3 k2 L$ Y4 \% P: B7 Oin 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.* C+ z) v* q- t4 k8 q( D6 a/ V
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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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