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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 Y5 Y+ w2 z) 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.9 J7 r5 |; o) _! r8 F
  Loads are processed by each operator for the following time:! }+ H/ I: t! V1 [: ]
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.4 j1 H6 `% Z: \$ S
  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.
+ R7 O! ]; a% R# ~! f  Worker_C does the job in a uniformly distributed time between 30 and 90 mins." @$ O4 ?$ z' 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:/ O: \+ Q% d& d+ v8 V/ F
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
& P" W: [( y2 K% t  X  `: Fmove into Q_wait /*Capacity is infinte*/  x5 [; X, u! P  ~, E) t
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/' ]9 J3 Z/ L: D3 ]) E

6 |2 K- p1 @& ?: d/ }send to P_B
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8 r" K" I) P$ j* Q; x5 MP_B and P_C is similar
+ w7 U7 X, G9 |  B4 ]- Itriangular 30,60,90 min
* I' `: _8 O7 d+ ]9 k' pu 60,30 min2 o9 X8 \% v, @$ T* e+ h, T4 k
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* p- o8 }) s, ^* j/ _6 rin P_C, you need to send to die.1 J- B, b- s1 G

6 C" j: o6 s; M! pThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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) r9 B+ g; S2 C7 x! n0 rRemember 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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