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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,
! L# K( B+ R* D; T  c+ ?" G  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, N  a: F4 W2 i1 i" K5 z; U1 d  Loads are processed by each operator for the following time:3 p: G5 M. ~, |7 I! D9 `$ c
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.9 z, R9 c5 i  X- k) e
  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.
" X: a- G& o$ d  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
# ~3 Z% {( N; S6 k9 OSend 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:
  q+ q& q2 R: N7 \+ ?After running the model for 10,000 days, what was the average number of loads in each process?
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9 [$ `+ H$ a0 {. \+ }3 a8 n1 B不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
+ k8 F4 y5 f& q, `6 Lmove into Q_wait /*Capacity is infinte*/
) V4 K5 G% z. Fmove into Q_process /*Single capacity*/
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( l" O5 w  }) _) C; U5 E# [use R_A for n 60,10 min /*Resource A*/
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9 S7 K9 m& r; k) Wsend to P_B* O+ B  b- T2 ?5 O
end
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. S% O1 c/ o% w( \P_B and P_C is similar
, Z+ _( l: t# K5 r' G" O5 j" n/ M+ ktriangular 30,60,90 min
) V* `9 h) j6 A& d. ~u 60,30 min" K$ e8 W8 L/ f1 Z0 l0 y) v
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in P_C, you need to send to die.2 H# R. V- }! o4 A9 A# _. h

  X$ `3 U9 }8 ?! ~6 S+ |; XThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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8 z" J5 l& t4 v0 O* m% 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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