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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,! y& u0 W1 M; M( S
  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.2 U7 J  V$ a! ]9 b
  Loads are processed by each operator for the following time:( B8 b" I" y+ u5 ^, J: {
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
9 }% v. x9 K! w- I# i' K6 f' \$ J  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.) R2 M; j6 C$ d: [% j' E# s
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
" Y& Y6 [! k: y$ JSend 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.4 H& _  b2 m2 S2 {, H$ |6 e* [

' t: E$ P" X! o问题:
0 u0 [: P5 M1 u- |! CAfter running the model for 10,000 days, what was the average number of loads in each process?
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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
1 f) [  n( B$ F8 _  P8 ]1 Fmove into Q_wait /*Capacity is infinte*/, }5 a: C# u1 T4 T
move into Q_process /*Single capacity*/& Z! E) K7 d# O# f; W+ B5 \

0 g: J  {; I7 }3 g( Nuse R_A for n 60,10 min /*Resource A*/! w$ S& i6 L( M. u0 R

5 ]- z5 l, H- msend to P_B
- S$ ~6 c, p9 p- j/ m8 R. B7 Gend, w3 Z$ ^( @# u1 r. u9 t
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P_B and P_C is similar
" w0 t( H- _  S; gtriangular 30,60,90 min" ]; R1 f' p' _
u 60,30 min- P* }/ N8 ~  L- p/ m

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in P_C, you need to send to die.
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6 @1 R2 T- r3 {7 i. d1 rThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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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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