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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 y) T0 [% h% h1 a
  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.6 j+ x# k3 I. C# d  o  I# H
  Loads are processed by each operator for the following time:  l4 g8 K0 L; m5 F' H6 L# M+ H
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins./ N  r. d- [9 {" _- U2 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.
9 C+ T8 _- N1 {5 u* A7 w( ]  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.6 h6 D9 h" P8 R0 X& x8 {& O
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., k. Y# F& ?$ H1 p: ]4 `5 V

( c* I  Z. J- h. V3 p问题:; i" |6 @3 U' \! n' _' h
After running the model for 10,000 days, what was the average number of loads in each process?
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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
0 s% P* c+ L$ w/ ^2 v9 ymove into Q_wait /*Capacity is infinte*/
1 s  R4 p7 P1 e- |move into Q_process /*Single capacity*/( m6 \' Z- E. ?4 H  e
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
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' w1 d/ ?; F" B3 \' L+ Z9 qP_B and P_C is similar0 k5 J8 _) x/ z* M
triangular 30,60,90 min
/ q1 K- u, o0 C' ku 60,30 min
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) E' a8 F7 _# g+ `" G( T& B% R7 R& |- `in P_C, you need to send to die.1 [6 R  E" G( {, i/ w$ `
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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.! B% ?8 X& d+ ^7 a% C: ~4 H" R  P5 o
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( i5 X+ O* G7 g! XRemember 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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