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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,' _" @# V8 [9 k6 o) N7 N
  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.
; C% w; F$ \1 q# C  Loads are processed by each operator for the following time:
# i- b7 c1 e2 h; Y3 h  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.2 Z6 x) i. L+ f0 N3 H4 t
  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.6 Y) h7 C# v0 b( f) o$ f1 i
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.- h; R3 l8 Y1 ^: B  L
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:
! b! y; w% c9 gAfter running the model for 10,000 days, what was the average number of loads in each process?4 @8 f( @6 e0 K7 ~. z
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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$ U4 n) C5 _! E8 [. n* l# [
move into Q_wait /*Capacity is infinte*/% l* A; l  J+ _8 M5 ?
move into Q_process /*Single capacity*/* I+ {% V. x* k: Q  P6 y
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use R_A for n 60,10 min /*Resource A*/
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% J$ }# ]$ u& G. _& Y$ x( {& Bsend to P_B
3 w7 T. t# r$ S1 b% Jend3 |3 z1 x$ W/ v' n1 N$ }2 O

9 {, e4 ]0 o8 C# F! n5 |P_B and P_C is similar
- B) Q0 e) r( m$ M) }triangular 30,60,90 min( j4 i. E$ C3 W7 ^' k
u 60,30 min
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in P_C, you need to send to die.
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: y7 |/ E% [  o6 j# {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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6 h2 j2 {9 p' q9 z. iRemember 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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