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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,' a, ^2 Q4 u3 @& Q1 f5 B  w: s: t
  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.' b7 Z9 O: ^1 D6 N- c2 U
  Loads are processed by each operator for the following time:/ O4 h# W; K1 I; }; f9 s; \9 J
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
3 b# ], u& S% {- y) n0 @8 Q  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.
, p5 ~$ X( a& r6 F5 Y  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.9 a& P% f) m3 }& \+ B; s' f0 Y7 i. }* X
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.. n) c# E! A/ o7 {$ k4 T

) r, v- b4 M. ?4 h问题:
& S. G7 R; C/ D( o  oAfter 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
$ t* J% e; J  G# A# W! e  ]; qmove into Q_wait /*Capacity is infinte*/# p* F) C. \' g
move into Q_process /*Single capacity*/: a' P2 ]* n, ~6 k2 [- e2 `7 C
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use R_A for n 60,10 min /*Resource A*/
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send to P_B+ I- [$ m2 y" \, M
end
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P_B and P_C is similar
8 E" B! g+ f4 E5 btriangular 30,60,90 min6 V& m6 z9 R' z: f
u 60,30 min/ z5 K1 s6 u$ T% K6 y4 g4 i' i

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in P_C, you need to send to die.. |* ~0 W0 `- I3 ]9 [

, h0 g/ p* S: \2 V5 EThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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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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