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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,
4 T$ ?  p, i& S% D6 p$ e  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 @' }" n7 v2 J. t4 M3 Y  Loads are processed by each operator for the following time:$ ?5 [( v, o3 Q' v+ a) B
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
* ^+ C! [7 ?3 ]: S9 \  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.
2 Q2 g; j& j) ~" n  V* w1 C6 s  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.) [9 g0 p5 ]7 U" e$ N0 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.1 w( ?7 J2 l" h
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问题:' ]+ G- j2 f# _& F9 Z9 ~
After running the model for 10,000 days, what was the average number of loads in each process?# O; P/ P) k0 F

" s$ M7 \- }( B. u; U不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving& Z% J5 g- P$ l; O
move into Q_wait /*Capacity is infinte*/0 p3 a4 S* C$ t* ?
move into Q_process /*Single capacity*/3 b/ {; `, c! C+ s+ ^+ `, `* E& {
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use R_A for n 60,10 min /*Resource A*/, o! C8 m* E0 W8 C; [

& M: L  A, \2 J' xsend to P_B
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P_B and P_C is similar3 J1 Q) Z! ]( w  g/ E8 i% H
triangular 30,60,90 min. [0 A' O7 q; s" X5 _* t
u 60,30 min& `( @! q% _3 y' m' Z* D

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# j$ e; K+ s9 J6 h) g8 min P_C, you need to send to die." ]  G( U" k4 [4 f4 |8 Y0 I  }0 r
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Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.0 ^5 G, A/ K% f' X( A/ P4 M2 R

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! N" ]  |, f" o+ S9 A, P1 kRemember 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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