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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,! l- ?  _* m; g" q$ p
  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.
9 g8 e! e9 t; l+ g7 P  Loads are processed by each operator for the following time:! e( k3 H0 N* {$ ]2 W! f2 L
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
  J2 |+ f+ p! 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., b& E2 {( M2 b) X* j
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins." i7 O+ t  g- `8 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.
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问题:
9 j1 k. Y1 K1 z& c$ b& XAfter running the model for 10,000 days, what was the average number of loads in each process?! b" B5 }* y$ ?2 `% j
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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, H5 Q/ p3 G: {. j/ b' q
move into Q_wait /*Capacity is infinte*/
9 @5 f) U2 C3 A( e; xmove into Q_process /*Single capacity*/
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  |3 M, H# G; Ause R_A for n 60,10 min /*Resource A*/6 M/ h$ h2 }+ B# ^# @& P

* ?. w( d% T4 C5 \$ l, C3 s9 ssend to P_B
0 g6 m. G2 w6 P% Pend) i* S% j) w. p3 ?* V8 e$ X

2 W8 E$ a+ }/ L- i! Q# sP_B and P_C is similar6 D3 R/ {3 N4 T" K9 S
triangular 30,60,90 min
8 [% X! l. ~# i! qu 60,30 min
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; P9 z9 Z# c' S6 w# {0 m# Din P_C, you need to send to die.2 X+ D* {3 T0 U6 m9 D

; s' H# G7 s9 a/ X: o% E8 b- `Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.7 s7 `8 F' T, ^. b8 L& c

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- }# n) g2 Z! J& t) ^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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