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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,$ _! R' Y+ p. S* |; h( k$ 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.7 q9 @* \+ ?8 K/ h% {+ O3 _3 i0 M" m
  Loads are processed by each operator for the following time:% x" K2 h+ C( z: X; S/ p
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.% K1 n0 `/ z, e  S# R
  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.' J0 Q6 E. C, s4 b, g1 D
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
; t0 e1 X! o; H. V4 q1 y# L3 B2 FSend 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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6 l7 Z" v) D6 o+ V' b问题:: r. @. X  j' T
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
1 y# h; P. {' Q! n3 o/ Rmove into Q_wait /*Capacity is infinte*/( O- Y. j+ s: m* z
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B6 |8 L$ x6 c: ?& W: q1 A
end% E: p; z# ]5 g4 w* x9 l6 W/ Z' E
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P_B and P_C is similar
+ @, y2 x, g9 x5 Utriangular 30,60,90 min, _% s# K  O; e; S5 i4 I1 ~  l
u 60,30 min
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in P_C, you need to send to die.' [% V# i: X1 V

. @9 [2 A/ w; KThen 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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