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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,
7 ^  ^' T" y% E% |5 G5 d  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.
" ]; w0 D  K) `  Loads are processed by each operator for the following time:
! F, h0 M$ a3 S; N5 V8 T* Z  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.# U$ H6 f. x1 k# Z
  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.
7 M* }7 p  L; Q9 Y: e  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.% U/ q* h8 i& p2 W. r
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.  Z" _. c: H+ m4 y

$ C& p# A( X, K5 P% h& W" }! K问题:; s* h! c- |/ ]+ y' |$ y
After running the model for 10,000 days, what was the average number of loads in each process?/ a) [* C( R' |3 e

* q9 f3 O4 t# V; B) N不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving8 X+ c2 p) r7 N3 l3 @, I
move into Q_wait /*Capacity is infinte*/
3 l3 I; J( m, tmove into Q_process /*Single capacity*/
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+ T/ r  x# Y$ I: J7 Yuse R_A for n 60,10 min /*Resource A*/' y5 y; m. C0 u( B& L# A4 r1 J
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send to P_B
/ i/ \, ^" M6 O' T, v+ A/ @+ p  tend
1 ]! H+ j! s2 @6 ^0 q9 p* @$ y% }: n7 X4 p: p- p
P_B and P_C is similar; [, H' q: i# B
triangular 30,60,90 min0 c# E% y3 ]0 v: j* l
u 60,30 min$ ^0 A( U+ O  }. H
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+ o) u2 F# F, p6 V4 g' yin P_C, you need to send to die.
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8 r8 p5 B- [$ X/ t0 `3 Y1 HThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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2 @! U: V) w5 v' f9 SRemember 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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