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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,
, u3 e( ]7 D; K" W; L  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 S+ n+ p, \9 K
  Loads are processed by each operator for the following time:# ?. T9 L9 u. j# a
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
& ?! b% S: Y* ?8 T- @- a  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., u4 b( `) z) y; {7 q/ O
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.6 A- c. w7 w& 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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问题:
& v9 }# x* u  X0 W2 ?% O- ~4 TAfter running the model for 10,000 days, what was the average number of loads in each process?
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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
* |2 y1 j9 }/ h5 w/ V, R. V( dmove into Q_wait /*Capacity is infinte*/
; f, i( @/ r1 h' e7 lmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
3 {0 j" v' ^' w! \! {4 Nend
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P_B and P_C is similar+ y- d1 R0 k8 B: K, q
triangular 30,60,90 min2 _4 i3 G$ M2 |! g8 p, j1 Y
u 60,30 min
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- K2 L! _6 e4 a% U4 T) [- fin P_C, you need to send to die.  ?$ f! U# I( s
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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.% _# v7 A, }! q  ~. ~5 R1 W2 w
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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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