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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,
8 P/ P& ^" x2 r/ Y, u' \  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 H2 e! o) ^6 i7 M/ ?
  Loads are processed by each operator for the following time:
! R; d& ^/ R5 V( N  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.; j0 g- V( _9 [# q$ C
  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.7 {: e, s* ]! V
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
) t& Z% h) N+ iSend 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.; x2 w* X% n, S: K4 `1 I7 ~
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问题:
& h2 N& k! s- \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 arriving8 {; U* `( I) Z  ^5 J
move into Q_wait /*Capacity is infinte*/7 d! m. I8 B2 b" D
move into Q_process /*Single capacity*/) Q1 U) |9 f* S

/ q" }: d3 O8 Z- ]* s1 ]use R_A for n 60,10 min /*Resource A*/
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! C' I# L7 w( I4 Rsend to P_B
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P_B and P_C is similar
6 S. d0 _1 l" j% E+ d3 z5 I" Wtriangular 30,60,90 min
; ~: K# h6 Q/ J5 ~2 Au 60,30 min- K6 ~  }6 H. {
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& I3 L# w4 E5 }! j. G4 N! l( Y1 Min 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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