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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,
# f6 q7 W' C( @- S( C8 L# U  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.
0 {. L! O. k- F( P  Loads are processed by each operator for the following time:
  R# K0 `$ ^- L% C. F9 }  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.( w5 x3 L' y3 ~
  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.
- n4 z3 p6 K4 i& D$ J0 z  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
7 F- U$ E# I  h+ k1 z% RSend 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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问题:
9 A) [- D, y( \, h; o5 u! V1 RAfter running the model for 10,000 days, what was the average number of loads in each process?; O! Y* {; x. B2 S4 K

7 E7 M/ S: w! M5 [0 c不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving8 y" |0 `/ X% ?6 p  ^3 V
move into Q_wait /*Capacity is infinte*/
% {3 r, N% Y0 b- Pmove into Q_process /*Single capacity*/; n# s2 F7 G! C* L! F" H

7 d# R8 j) r8 N2 T5 W9 duse R_A for n 60,10 min /*Resource A*/
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send to P_B
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P_B and P_C is similar
+ G9 {8 p1 m( Utriangular 30,60,90 min8 ~5 U+ H3 d6 O' W7 H
u 60,30 min" h5 w& U+ {1 i/ Q

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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.
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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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