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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,
* d# G2 A, P% f) z3 v0 q: Z  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.4 m1 v% f3 q- L) T! w4 g' M. h
  Loads are processed by each operator for the following time:
& I6 M" Y  W8 ~+ L. y( T  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
3 f  L% b9 B7 N8 r8 {. o5 b( |1 b3 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.
$ @# E' l+ h8 |0 V  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.: y2 r! A! w" V) i+ i
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:
( D" w7 j# q! {  C% g1 W$ h2 rAfter running the model for 10,000 days, what was the average number of loads in each process?/ S. f4 ~# P" h' A

* x2 E6 T: v& Y4 A4 m; F不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving; N/ M4 \- X! M% ]  X, t# h. g
move into Q_wait /*Capacity is infinte*/
: H* Y  z% @5 Cmove into Q_process /*Single capacity*/
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* F9 ?. W/ z# b# J: J1 G' Tuse R_A for n 60,10 min /*Resource A*/# v3 H) B) J1 _3 j  s

# K! k' K8 e# @! i. fsend to P_B
8 G' Z: V- q- O/ O) fend- x& s6 i' Z( D- D& R) D- N' O
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P_B and P_C is similar$ a& Q6 D% g( `: m7 y$ M# V4 Q
triangular 30,60,90 min: V+ D* x! N& X0 z% s) i' h; u' a) O
u 60,30 min/ W. m$ W. D, n! ^
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in P_C, you need to send to die.
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: I/ z: j6 f# ~7 m0 a5 b) h! F( @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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5 u' Y( Z5 v# D2 [' {% oRemember 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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