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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,
4 m# i0 f- s9 D7 x/ b4 i/ i2 Z  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.
. o* L! K1 k9 h2 \$ c$ Z  Loads are processed by each operator for the following time:& C- q- H3 S/ Z% f/ M
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
6 Z; ?" P" h* u9 m3 P/ L9 D4 n7 `  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.4 F5 p4 C. i2 H
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.3 K2 K9 U3 {0 v$ q% I
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.
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7 @" d# f! w8 k) q( h- _, }' S. ]问题:# C* T; b8 U7 @1 i1 O
After running the model for 10,000 days, what was the average number of loads in each process?, c' Q( F4 }/ z1 ]2 r6 ?
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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
! H; H! c8 f( D& ~8 E- Q# G! h+ vmove into Q_wait /*Capacity is infinte*/
: \# L. H( t: V1 J0 Z1 m" |move into Q_process /*Single capacity*/. K) u( I& {- `) r

& w+ d7 g% P" f/ r6 s. k' Ouse R_A for n 60,10 min /*Resource A*// T8 B3 O) u6 N; D" g6 v0 I

1 g9 R, I0 A9 c% F% wsend to P_B3 j: i$ ~# E1 C) w9 C/ Y, y
end
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4 h. ?; u6 i; w! o" GP_B and P_C is similar: b1 `; h! Z& _& I( ]3 X+ Q
triangular 30,60,90 min
  @# j, a( H" R  Q6 D, |3 au 60,30 min
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in P_C, you need to send to die.
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% k' X; J6 ~0 Z: f/ hThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.8 n8 i- ~/ d3 {% z7 Z

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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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