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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,0 Q1 H. h4 {5 Q5 E7 B6 _6 w6 c
  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." ^. u# x4 [. `6 i
  Loads are processed by each operator for the following time:
( t0 r3 O! E* d9 }! e8 u$ A  A( M; p  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
- x9 M2 T  a6 y0 E- f5 d0 }  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.
- O9 V* J& z7 |' |  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
: C; k( J/ `1 ]' U9 fSend 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." n$ z% z* V# s- |6 C5 E; p7 @

0 V2 l' Z" L9 w问题:
! q6 J  M. @$ ~( yAfter running the model for 10,000 days, what was the average number of loads in each process?
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3 F( i6 [7 ~" K% f不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
: o$ z4 |3 v. b0 xmove into Q_wait /*Capacity is infinte*/* f1 r$ [/ y/ ?3 n& t+ Z
move into Q_process /*Single capacity*/6 g; `) J( S) c/ X$ v& F
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use R_A for n 60,10 min /*Resource A*/9 F! M6 w* X/ _! x

& u# ?7 n5 J/ ~8 B2 _8 msend to P_B* Y+ o! F# [: p2 l) ^- w- W
end
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2 }& A8 q0 n* |4 F/ z5 xP_B and P_C is similar, x; a7 v5 y6 R2 w# s, O$ r) A- F
triangular 30,60,90 min
/ M7 d1 g8 P7 Iu 60,30 min
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8 g6 r8 ?: E# r- a9 {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.
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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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