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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,
+ F5 j/ J% _8 z3 P, O# Y' T' d8 [  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.+ v- b( `2 S$ i5 D3 @: ^6 z! ]
  Loads are processed by each operator for the following time:( E. f5 u5 Z$ i" f. H
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
  U9 G! J* W8 [9 ~# \  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.! i+ A# A6 {3 t
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.; o5 F( {8 A: |* P5 a6 F  s7 ]9 G
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.
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, s$ i% j  E+ ?6 E问题:
; o- J6 ~, D) T& g( w$ LAfter running the model for 10,000 days, what was the average number of loads in each process?  M0 g8 o5 {+ ^, l* h
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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 arriving9 s1 s% v: f8 E$ A) `: Y
move into Q_wait /*Capacity is infinte*/
5 N& k$ P! s* Omove into Q_process /*Single capacity*/
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: ^# w4 S* o: {0 H2 q. {3 Y# Euse R_A for n 60,10 min /*Resource A*/5 `& N: L5 X- [8 {9 X" K
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send to P_B
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P_B and P_C is similar
$ t. f3 u9 r2 a9 R/ ~* I5 ztriangular 30,60,90 min
) ]. ^: j- n* _6 d+ Hu 60,30 min+ c# Z( P: x2 k6 z: L/ |
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in P_C, you need to send to die.' b- h( z3 A1 i' i" g

) J! N1 K$ w' A/ hThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.0 D! h/ ]- p* l+ J. v
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" Y6 X4 }  `5 x7 p- ]. t5 D8 s8 URemember 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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