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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,
; `% ^; e* i  m6 a3 j  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.
* u2 ?2 S" I, F1 p8 `  Loads are processed by each operator for the following time:4 g+ F4 \3 r' p' Z3 M
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.# w% J- n1 J- f& z
  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.# O2 i7 A6 Z; V: b& M- ]
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.9 {( F$ q: n: N  Z
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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8 Y3 u; x' t# u8 P" @1 M, P" E问题:
- g0 C9 m0 M4 H, t, h& h. T6 J3 @! g1 @After running the model for 10,000 days, what was the average number of loads in each process?0 X) I3 ?' V/ [* Z1 @) A, w
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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, e- E3 G- u- |7 |
move into Q_wait /*Capacity is infinte*/
- o' m; J9 J9 H  W4 |' m* Y7 Omove into Q_process /*Single capacity*/5 X$ r* f2 b. n) v4 u3 q: g

+ p" ~) p) t0 e0 [- g& R  fuse R_A for n 60,10 min /*Resource A*/
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send to P_B/ K& ~: |+ u9 L( U+ G9 e
end
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  G0 g, r0 o0 M2 zP_B and P_C is similar
3 G/ ?' Q, t& D% j( _; ztriangular 30,60,90 min
: Y% {: `5 Z; A: ?" pu 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.$ f! V+ o$ B  D* s

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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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