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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,5 {4 r2 A* B3 q( J: p: f
  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.' l, P! k% z7 C6 D
  Loads are processed by each operator for the following time:$ e6 L+ d6 F/ Q3 u/ c0 C( S
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
+ p0 \- o( [; r+ O' I4 ^  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.
. r9 P3 q. u+ ^4 P  U  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
9 \; L# a3 ~# |3 ~3 }- b4 W' K- |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.3 [  }3 ^0 O9 `3 K6 I/ b
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问题:
- R) @. s9 ]6 K6 V6 z) r6 z  n5 MAfter 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: y! n4 |3 D0 {6 n4 p7 Z
move into Q_wait /*Capacity is infinte*// S" U7 n: P" ~! W6 j
move into Q_process /*Single capacity*/5 r7 [. I9 Q# v0 Q' ?

2 ], `" r- a" K) zuse 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
" T  H4 h  j1 htriangular 30,60,90 min
5 O; q" _/ |" V8 i' m$ Pu 60,30 min  l. q! ^) g0 P/ L- [$ U
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( t- k( L7 v( w4 r9 X( ]in P_C, you need to send to die.
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5 J& A' ]# U$ l* K1 B  L% CThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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3 b* t9 h4 ~* T' b  C' g, QRemember 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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