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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,. p8 @+ r2 d6 v# n
  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.
3 G# J( X" S. q0 L2 v/ Z  Loads are processed by each operator for the following time:0 Q2 B9 E1 X: ?
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
7 d; P& h& r# I7 Q7 L; |5 E, J7 p  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.9 T6 v6 \+ Z9 d$ c
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
0 U: S7 N3 b3 J) QSend 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.# P* }' a' k/ C( o5 P. I* l, p4 N( d

* I1 X1 ~/ y3 w7 y! K" f8 u3 g! L问题:& L+ e: U& T+ F. s
After running the model for 10,000 days, what was the average number of loads in each process?% d3 k. v, m( C* {( _& v
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不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
. D) Y6 j+ [; m1 }move into Q_wait /*Capacity is infinte*// B0 _% F3 c/ z' _: a# E
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
9 B% o! Q4 g8 Iend
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P_B and P_C is similar
/ ^" D" ?. _- M5 Ttriangular 30,60,90 min+ a8 O; ~# ]+ a. B3 D% o6 x& O& [
u 60,30 min3 j, m, g3 I  M/ p1 C, P1 z  ~$ Z4 Z

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in P_C, you need to send to die.# c3 F' s# t# O2 D% l
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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 t; Q! w$ M0 `3 |
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6 V. Q% g) [* ^; X5 Q- {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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