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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 H3 r' T# [+ X( }7 N' r( {" @  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.
# E+ }5 w0 U2 p4 h9 i$ n  Loads are processed by each operator for the following time:" i& ]# R5 J5 u& M- A. X8 @8 ?
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.+ ~. C) G8 @7 X: d$ h- m
  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.; D& m6 E" N  e$ V% J" E! G% V
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.; {7 a/ n6 l) v4 l; r0 `
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$ Y, q9 ^5 X/ w* @2 \- U问题:" e; B1 U; i! ?: Z
After running the model for 10,000 days, what was the average number of loads in each process?
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; ?8 f6 T; e! A不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving- W9 D9 J" w- H4 z2 k
move into Q_wait /*Capacity is infinte*/8 V9 K. W9 O2 f, X3 z$ ~  F
move into Q_process /*Single capacity*/
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0 Z, m( G3 \0 Y( ?use R_A for n 60,10 min /*Resource A*/  A% P0 b; C  O* j7 q7 ]

, s! B7 |- m- Q# m+ d0 {( U& [send to P_B
1 {" r1 ~! v! P* `- Wend# W' M, T$ N  v; g

# r$ g$ i( H$ j  R: m$ H/ e& MP_B and P_C is similar; i3 E+ v" a0 o, S
triangular 30,60,90 min
  C! y7 C) L' c/ g" T! M% e2 x- e/ Ku 60,30 min
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in P_C, you need to send to die.
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. s" F$ B5 e; {: v. f7 n4 \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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0 E# O( ~$ h8 E' g' n* |9 A5 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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