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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,1 u1 C, @8 _, h: ^4 S# L+ F
  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.  N" ~/ ^' y/ j- I& T
  Loads are processed by each operator for the following time:
* m  A* t! ]- [  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
3 k1 l. t% w' w. ?5 l4 C  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.
7 a' n- ^) g6 R% l. Z7 F- o- [1 s  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
1 m$ A' S! @0 F# SSend 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.6 ]$ _0 t% l+ i$ b
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问题:  p& t5 V# S+ J. v
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  [3 A9 c# T4 B+ K0 M
move into Q_wait /*Capacity is infinte*/
$ s( e9 m( d* C; b) ?# I' O7 ?/ Nmove into Q_process /*Single capacity*/2 A' l8 n% N/ k; o2 c( \

' V* p# V1 S* ~use R_A for n 60,10 min /*Resource A*/
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# l6 ?: t6 E( H5 n) e, \send to P_B' V" S. G! f8 F2 A; H: u
end+ A. [; v( g7 t0 B+ A/ }! N
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P_B and P_C is similar, N8 l1 q. E0 }# W0 v. b4 B- W% B
triangular 30,60,90 min
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in P_C, you need to send to die.
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$ c0 W: V" F% @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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