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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,
. P3 o8 f8 C% n  i  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.
; _% L% U- g, e# X3 o+ l; s  Loads are processed by each operator for the following time:8 U  p6 I% V' M
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
: R7 Q0 M+ f, s  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.% Q  B7 H0 E9 d. [, Q' T! M
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.' H- `  m( L" ^
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.9 G  o6 G& X0 F% H. G" k6 R/ V

2 P1 O. I/ D3 F0 T7 n问题:
$ a7 V  s0 I7 @9 d6 HAfter running the model for 10,000 days, what was the average number of loads in each process?
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# L0 `( A* @6 F) N! P" P. ]: c不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
$ G( M# y6 k4 W6 r  q3 F5 E, Ymove into Q_wait /*Capacity is infinte*/8 A" v- |2 q! {& G3 H5 _/ ]1 u
move into Q_process /*Single capacity*/
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4 D& M: l5 ]/ Y' e4 q" t& Y6 Fuse R_A for n 60,10 min /*Resource A*/
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send to P_B# Q$ {1 t, O& g1 T; V
end& _4 Y! i# Y5 W, J' j  P

$ h, B  I2 S6 x! o( k* l: o+ xP_B and P_C is similar
) e$ \- j2 k* Ctriangular 30,60,90 min5 L1 G( k) ]; W- z
u 60,30 min
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# H9 J- k+ S! w2 r5 x4 i5 Tin P_C, you need to send to die.
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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.( e& N/ J9 p# r; f5 s3 z& |
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' h: X8 ?* y8 u5 U9 jRemember 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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