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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,
# p' f% ~. X/ g5 p) x* B  T& q  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.
& i3 n5 F- S% m* N0 @+ W  Loads are processed by each operator for the following time:
2 [# k4 f! B+ @9 x* [  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.: T" r+ |  A# B& }" 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.5 z& S+ Z; Y2 \9 c' y4 W
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.' p: M# j/ ^( A- R' T" q! @: I# c! f1 M
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.( b" L9 C' u! H% y

. d& q0 e) R& T1 F) |, O问题:5 N" ^% j: f1 ]
After running the model for 10,000 days, what was the average number of loads in each process?8 Y0 x4 B7 t9 q6 r  `5 C/ e$ `- ^

2 D& Q+ ~, S4 E7 u9 Y6 b不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving1 @' z6 w- `, E
move into Q_wait /*Capacity is infinte*/
" ?6 s6 M$ g3 @4 n& W  s! Fmove into Q_process /*Single capacity*/
; F, @  l6 {0 i5 }, ~- B& F0 y, s& B# r2 P' @/ p
use R_A for n 60,10 min /*Resource A*/; ]/ U0 h  G" Q  {" S

% u0 Z2 Q# Q7 |' I( A: A- `send to P_B
7 H* Z6 N( b/ G+ D- W- Wend
* {3 U/ Z: a% h& s5 H- d$ V6 S3 D0 f: h) O- T/ {
P_B and P_C is similar. ~3 X% f' m# u! {+ H
triangular 30,60,90 min* c# _/ S5 L  S' T& F* l, O- n
u 60,30 min/ X* V/ \% C3 J2 b* T
3 i! L( r6 r& R

" w+ x: G& k4 xin P_C, you need to send to die./ T! _) C' b* m" s5 l9 b

2 q# f% M) j& T; ~0 B$ IThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.' C; s" s* k6 A4 [

2 W+ t) V/ j$ G4 d- e. D3 r9 |  T  |7 G2 W" ]! i, N5 x
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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