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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,' d8 s! c* @9 ?9 h- k! k
  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.9 O3 h1 }4 A" |, L
  Loads are processed by each operator for the following time:
$ D  Y% ~% Z# x5 e  [  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
$ z# G# w0 ^5 H/ x1 t7 d  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.* P8 @+ \1 X5 n& O$ S2 `
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
2 [2 R' r  a* A8 G8 C9 k( K; B2 SSend 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.( n( @3 V: g7 m1 S
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问题:& y4 I& O* a, Z. {+ f* v1 q0 v: h9 B. \
After running the model for 10,000 days, what was the average number of loads in each process?3 r4 x' ?, r. G4 G# r
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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 arriving5 ~/ \# L% y# Q
move into Q_wait /*Capacity is infinte*/2 q/ M) P( U/ ~, U  F% l
move into Q_process /*Single capacity*/; F# m/ ^# k3 p8 W1 N# O6 l6 M9 s7 W

/ u2 R$ A2 `. t7 S5 Quse R_A for n 60,10 min /*Resource A*/1 p- @$ O4 a; e, m  k
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send to P_B
3 g. {% _6 Y' gend
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) R% L) S( _- @0 p) RP_B and P_C is similar: D( s- o, D3 c  ~1 m+ V, r! y
triangular 30,60,90 min
3 ^# M8 B* R, i) N2 iu 60,30 min
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( E& P# R& j' n* B% \in 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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6 x& Y! A6 ]& KRemember 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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