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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,6 h$ {, I: E8 }" ~0 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.$ S( @) s/ v1 }4 N* X
  Loads are processed by each operator for the following time:2 b9 R/ g% K* ^/ _/ h) d5 C
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.+ f6 {/ G' H2 ]  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.3 _" ~1 s! j( N* X. X3 z/ @9 U
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.' ~, L( B3 K7 q4 w+ i7 v
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.$ A- v; m4 i1 b0 r7 p( k! l( H

: b8 t' a% u1 L问题:
& p* M5 C7 ~! N' N, k& Z# GAfter running the model for 10,000 days, what was the average number of loads in each process?/ X1 B7 J. }% `3 g' Q( H1 W
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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
+ i7 l* @  t! ^move into Q_wait /*Capacity is infinte*/' _/ z; ]3 x% a( b3 H" t
move into Q_process /*Single capacity*/
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5 c1 k( N2 N5 f5 e, m" wuse R_A for n 60,10 min /*Resource A*/
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send to P_B: I& K3 @% d" V6 i* g4 W9 H; S. V
end
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P_B and P_C is similar
& r/ D" o7 @5 y0 [triangular 30,60,90 min# V# I0 G/ s" |" A* P
u 60,30 min* |' e& R  }8 P1 m: k
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+ l) v( D# O: F; l0 Bin P_C, you need to send to die.
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3 v, I# u6 g& A+ R/ @9 WThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.+ O0 u: F) K$ [1 W  T
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, a) P9 d7 `2 a( \0 p$ C; S5 l+ O4 s% u: sRemember 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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