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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,
8 M$ H. E& \5 f6 D1 u4 X  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." N% R# e" q6 h* S' j/ _1 [: L
  Loads are processed by each operator for the following time:' R% W2 a' i2 M7 b1 C8 L  [
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.: D2 I$ D# {% T' C5 H  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.
6 b! T' y! `1 P7 ]  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.* _; b9 g# \0 D7 I6 R0 W
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.$ C( B1 d! x# `6 y" {9 Q7 I) j
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问题:4 _) K$ s& D1 B6 _$ `
After running the model for 10,000 days, what was the average number of loads in each process?5 e* R' I: }9 c+ \7 f( ]
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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 Q* P  z5 w: i4 {move into Q_wait /*Capacity is infinte*/
3 Q# }7 ~- s+ T! `5 A" ~9 d7 ]  ]move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/) Q: c. E" L8 E5 A; Q
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send to P_B8 k8 K! {: `1 _4 R4 B
end
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. ]) c% s6 e/ K- |% z: M% uP_B and P_C is similar+ u+ u/ r: b! H7 Q! X
triangular 30,60,90 min( D1 p* ~; r' ?1 C+ \  J
u 60,30 min
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6 T. f: Z! G6 I( `4 N, z- @' xin P_C, you need to send to die.5 h7 _! M4 T7 m$ u2 Q1 |
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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.8 j5 \& I; J! ]9 X* z
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) H) @* B" w" q- M. x! RRemember 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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