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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,. Z: o/ q. C. T' H" i+ H% 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.
% Q! v& |# J0 S) _& \+ K2 r9 D1 m( }  Loads are processed by each operator for the following time:$ `( F, p" ?$ P3 F4 }* L+ @
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.2 L  F! T" T* j, v9 ?
  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.9 C  a( C' y0 }
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.( f$ o# d5 }+ T
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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; J6 m3 M) s4 `( z6 w* T9 w: e" P问题:
, x2 E) t, {7 i6 G% ]After running the model for 10,000 days, what was the average number of loads in each process?( u* a* @9 s* p% s6 f2 `# {
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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 arriving1 t, U9 v; v: m/ X) D
move into Q_wait /*Capacity is infinte*/
8 E. N$ |: ~. umove into Q_process /*Single capacity*/: M$ a: y- Y. e/ o, B3 B
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use R_A for n 60,10 min /*Resource A*/+ k8 L  @2 o+ G, L$ G. V3 s/ i
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send to P_B
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P_B and P_C is similar
+ \  J% z9 X" T% {0 [, Btriangular 30,60,90 min# A( j7 d! {: f4 R- @8 f8 J
u 60,30 min
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in P_C, you need to send to die.$ A6 v& M, _$ a
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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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% E4 O/ Z" m' |% b$ LRemember 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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