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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 l/ \9 O/ C8 v. f9 I% o; k; p: D7 l
  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.
7 ]/ Y- [3 r1 w$ _) H0 t  Loads are processed by each operator for the following time:
( A2 Y* T( i" h/ t# Q  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
0 t, F1 p8 Y( }3 o+ U* 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.
2 m  S$ r4 o0 N1 L, B% w  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.$ t( G+ x) e. P6 U
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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9 B  u" i: ~5 @, w* s8 b8 ^! l8 q问题:  n2 L! }' T' h
After running the model for 10,000 days, what was the average number of loads in each process?( p" k( b  a7 U" d

2 _" Y& l( o) f4 ]# j* x) V不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving" ]/ Z6 I4 f' ^# B" I6 v3 w! _
move into Q_wait /*Capacity is infinte*/
* b  a; T8 ?3 Smove into Q_process /*Single capacity*/& X9 f: V$ r( [' C& K6 O* Y

- r& s% T2 V- V% P+ t- Duse R_A for n 60,10 min /*Resource A*/& f! C) y/ b3 j& X: {" @. D/ N
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send to P_B
1 h$ h4 r' K9 f" jend
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8 O+ H, ]5 h4 z, R6 \P_B and P_C is similar
* u% ^' i$ L0 Y9 f4 h" Rtriangular 30,60,90 min9 [" Q1 L7 Z1 {" x8 d! ?' D1 J3 k
u 60,30 min
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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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+ n: l) I! g0 r4 u" J1 \/ sRemember 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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