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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,
; P- t- a% s9 Y: z9 D6 n- ^  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.
: F3 i# A; `; |8 W! [" n  Loads are processed by each operator for the following time:1 l0 s; [3 p7 X0 j7 e, p
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.+ |0 p4 c  t8 n+ b
  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.$ f9 c* f. Z! a( ]5 y4 ~3 Y- S
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.: ~/ w& s% R/ k
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.2 i0 [1 U- [0 I: p0 Z1 k

& @' I9 o( q$ l( T5 j4 ?问题:
* b4 O4 ~' p4 f; C4 _% mAfter 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 arriving! _/ w& ~8 T( k& T) Z% `3 ^
move into Q_wait /*Capacity is infinte*/. w; Z* a3 b6 w( S1 g" Z. ^) D! y
move into Q_process /*Single capacity*/& A. Q3 G! R. d5 H# V( _7 e

2 W; I* D2 E1 O7 ?8 uuse R_A for n 60,10 min /*Resource A*/+ |, D+ C9 \8 }' }" P/ _
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send to P_B' E* \) ~' Y, d% x, C( \8 }. A
end
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P_B and P_C is similar# w8 [0 M! [+ u6 E) n+ K- m
triangular 30,60,90 min
" d$ K, W- b% b- g% a! u  X1 {u 60,30 min
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in P_C, you need to send to die.
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8 h& z7 H* D0 q9 X# y  @" g, W/ @3 rThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.2 L3 x3 G, |. e; z- c% |$ }
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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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