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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,9 a8 G# H& [$ B) u  C4 U& h( J+ 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.
8 W4 }4 d. s) j( y9 h6 W  Loads are processed by each operator for the following time:1 X$ a4 _6 X! c- \
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
( v- o1 H% ?! p0 u7 ]  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.' o0 J5 u5 n2 r# m# R" e+ o$ |# P
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
! A1 H+ [5 c4 W! B: tSend 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.
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问题:
% S- T) v( K0 V8 {+ dAfter running the model for 10,000 days, what was the average number of loads in each process?
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, S0 h0 a' R- }, `不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
+ i, P+ j2 o5 d6 x" @move into Q_wait /*Capacity is infinte*/1 _# j9 N, y# W* X" @0 N3 W6 H
move into Q_process /*Single capacity*/1 V- Y! k' m3 j& Q

* I0 H1 F* e% Cuse R_A for n 60,10 min /*Resource A*/
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send to P_B- i7 q( k1 H( I; g
end1 E/ F6 n  n4 x$ W
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P_B and P_C is similar+ d1 u8 V) G  {  W1 A% [
triangular 30,60,90 min6 n3 B4 a$ u" c& c
u 60,30 min
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/ ^8 q# a1 {' Yin P_C, you need to send to die.
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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.5 m6 i+ ?7 Y$ X! U- w
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% q7 M. w) z6 E& {' c1 m/ w; L; T6 q& hRemember 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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