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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,# i. [: ?  X+ @( X4 G* ?6 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.
% }6 j1 G$ F2 C* ]  Loads are processed by each operator for the following time:$ {6 w+ V0 U% b1 c+ c
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.8 W9 T: _* E( A( 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.( F$ [" e- Y+ O
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
9 d6 G% i* g+ W6 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.3 y* k, |& K* v0 u* Z; y2 `) M
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问题:  F& Z$ G0 A0 G3 o/ G8 c
After running the model for 10,000 days, what was the average number of loads in each process?( W" K. E- m+ _( \3 D  H
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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) l" p4 H, `* P
move into Q_wait /*Capacity is infinte*/; Y* |# H: B8 ~' m
move into Q_process /*Single capacity*/0 H0 _9 p+ l% G0 V3 J8 s* l) e
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use R_A for n 60,10 min /*Resource A*/
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7 h) C2 N1 e: F- P4 Q' isend to P_B2 n  C' t: Y8 O4 H8 X
end1 b* m  O8 w. L$ A
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P_B and P_C is similar! w5 e* ~/ d# A4 E- a/ B
triangular 30,60,90 min
% s( Z; ^9 [+ t. p. V9 Bu 60,30 min7 D- s$ K# ^) {$ O0 j: A. i
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/ o# z2 g1 r0 }! v$ hin P_C, you need to send to die.
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! Q% m) z- O" C2 Z. ~Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days." }0 G: c. i0 x: i* ^" Q

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& }8 X$ {! Q: Q' cRemember 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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