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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,* ^5 X- W6 h) Z# y
  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.9 M$ k9 W9 \7 R1 ], f
  Loads are processed by each operator for the following time:
' j- W! e( \6 R  o( \0 d# e2 B/ g  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.$ G) q- m* Q& `
  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.- m% f  k! E/ p$ B
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
/ X0 p4 Y5 _: |/ \& wSend 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 U/ l9 [( U2 ?9 {+ p( E* C, f

6 P# m8 I7 W$ I( V/ c问题:- q! B3 F/ E* W8 G5 S/ |) g
After running the model for 10,000 days, what was the average number of loads in each process?1 M- g4 w  F4 c' I& x0 `# q) `

) n& J; g7 ?: {* l  e不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving1 v) a9 O: e" w1 a3 ~
move into Q_wait /*Capacity is infinte*/; M; I7 Y4 y( J& q6 ^) D1 U
move into Q_process /*Single capacity*/  n4 ~  S) [5 j8 v
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use R_A for n 60,10 min /*Resource A*/- k" w1 v- F0 G4 j$ ]

# k# e4 P& l8 e7 }3 w/ R& Wsend to P_B% W9 Z1 f: j* m+ n7 c
end' h+ ?8 T6 d. [7 Z2 r- P

/ B) b+ D/ K6 X/ D; IP_B and P_C is similar
5 X0 i1 z" @5 Y, @triangular 30,60,90 min  Q) b& o3 ~# q& \* ^  I; [
u 60,30 min: T# v) I" m  O' }+ {+ B
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in 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.$ e1 l7 y9 C) I  |9 r! o3 _
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- U4 y3 ^) _3 @: d( J! b3 B0 r
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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