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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,  t4 g' B7 B5 y) T( ]+ G5 i
  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.
; q* \$ g' i8 @/ l  Loads are processed by each operator for the following time:# y- H/ o0 E. ?: d9 B' m1 h7 c* i
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.- u. b! C( c1 Z+ h
  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.* t% m& r9 s0 F1 b1 F2 g
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
, O8 b: T* v+ v& T' pSend 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.
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问题:
! _- R$ n4 h1 U! p( `- b5 SAfter running the model for 10,000 days, what was the average number of loads in each process?7 b% q5 F3 B/ }, b4 f

) E9 n. d7 ?7 p/ E7 n% b  A, u不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving! e* Y. N$ b% {. Q) J' }
move into Q_wait /*Capacity is infinte*/  A* I: M) b) H* ]( E% X
move into Q_process /*Single capacity*/
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5 L% ^2 H( y: e+ q0 r1 l( R% buse R_A for n 60,10 min /*Resource A*/
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! ~' g3 U% Z) H9 X- Q9 ], \send to P_B/ N$ s2 b3 h9 |$ X; Z
end
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0 g) C( {8 a# N5 xP_B and P_C is similar
& U: Q& G7 }2 T8 [" n) ?; itriangular 30,60,90 min
9 Q" [& @: L) p! Z4 A; Qu 60,30 min
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6 X. U4 \' x7 V# \& y4 _# ?# M- Jin P_C, you need to send to die.
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. `& Q- S) h: J2 o! {5 zThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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1 ^0 X1 a; W- X) MRemember 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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