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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,
+ G: x! X( `! A( r$ W8 r) q8 R  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.
  F6 Y6 r. W7 h$ g& E9 ~+ C  Loads are processed by each operator for the following time:
8 M' p# f/ X/ |/ D% J$ l& q  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.5 X- t% V1 F+ [% W4 w5 H. P3 @3 i
  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.8 }. j- p/ W# d. }
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.5 H8 \) i2 @* Q
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 W: Z1 Z# f. a
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问题:" b& `8 M! g/ ], d( S5 f
After running the model for 10,000 days, what was the average number of loads in each process?
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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving% K9 \; q9 W% x, [- `8 `9 F8 K
move into Q_wait /*Capacity is infinte*/
% ~/ \! ~8 J7 Ymove into Q_process /*Single capacity*/# q6 D9 @+ Y& M. d7 e

- r5 S" @+ a8 y2 ~$ U! Luse R_A for n 60,10 min /*Resource A*/
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send to P_B
7 U% g6 y* p7 S/ @' M9 mend
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P_B and P_C is similar
- s* A' h# H# k- n" |) s9 qtriangular 30,60,90 min' ^: Q; u, W: U$ i
u 60,30 min
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in P_C, you need to send to die.
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. T1 G4 s" ?; H8 u, T! {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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