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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,2 o3 n3 A! b* f
  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.
8 n+ O' U5 t: x# Z; f& q, i1 z  Loads are processed by each operator for the following time:: T- x& g2 z# Q9 N- C1 P( {" Z/ e) E
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
8 [* \5 F, N% Z" A- ?# T9 E' |  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.
( t7 D& d1 u% ]3 t# Q% i  Worker_C does the job in a uniformly distributed time between 30 and 90 mins., ^9 ^& j" b9 Q- ~0 v. Y1 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.
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问题:
) V- K. [' l, y" G! t: 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) s; h; M7 |0 k8 J8 F, W/ E+ X
move into Q_wait /*Capacity is infinte*/$ Q/ e9 Y+ U& @8 F/ V7 [
move into Q_process /*Single capacity*/# J( O9 H8 D6 H- B0 r* I

! I% t" M! j9 r; F+ {3 C) g- e+ j( muse R_A for n 60,10 min /*Resource A*/
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' S  o. _: ?0 q" f# d! E& }send to P_B( a: v; R: _- V+ v8 M0 Q
end
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/ ^3 z& l' y, h6 ?5 w$ L0 EP_B and P_C is similar' j+ w( A) i( Y; e  }3 E  G
triangular 30,60,90 min/ L$ ]) s/ o9 i- g! J
u 60,30 min$ G$ X* G) {$ {' Z$ l5 F  T6 m

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+ ^% @7 d9 m* c5 w- k  l' y- j: Oin P_C, you need to send to die.0 N) P: o, S) A1 S* E3 m
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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.1 M# ~* b* ]1 G4 {$ k% }' F+ K

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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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