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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 N( u1 D1 \4 L, q- `
  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.2 K& N8 S% t" w, K+ d2 `* [
  Loads are processed by each operator for the following time:
3 j+ d2 ~7 F# i8 v" c  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
. Q; }: D) L4 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.
% m" a/ E% O0 |# A, p2 w  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.4 h  ]/ L- n8 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.8 ^2 @  l# p% {" G) p
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问题:
/ `' J4 d: j0 m5 AAfter running the model for 10,000 days, what was the average number of loads in each process?& P2 T5 y# }4 L. _

- D4 H. }% F8 K2 u3 _9 ]& h! O7 ?不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
* T, B) f9 z6 n- t& C: {* Emove into Q_wait /*Capacity is infinte*/
5 w% i6 ~# ]5 G1 ymove into Q_process /*Single capacity*/- |5 }" E! B* l+ V& k4 ~& x
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use R_A for n 60,10 min /*Resource A*/
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send to P_B- g. ^( ]* v2 b' n5 H
end) }3 r4 t1 G, P: v  y6 |4 R- d

& _  s$ ?! j4 B! S* ]P_B and P_C is similar% E* h  j8 \! H; w2 d0 g  y8 k/ A2 d$ M
triangular 30,60,90 min6 T: [2 C$ A' X
u 60,30 min$ L5 ~4 [3 x% `6 K) V5 u
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0 I" Z. W& g6 d9 m. x; sin P_C, you need to send to die.1 w* k# n- V4 f0 z! W' Y
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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.- t' R9 L. S5 p* _: P+ `7 v4 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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