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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,: g8 T% W6 m: w9 K/ f8 H  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.: z& H$ Q% F4 d! o: H
  Loads are processed by each operator for the following time:6 Q9 Q) k' i+ C( D6 E9 S) b( n
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
7 F# ?; A: {# j3 m3 b3 p  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.
0 D. q3 O, o8 G/ r& J  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.$ L  M' d2 g! v6 S3 N4 E8 j
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.% G! d8 j- r& t. s6 U

: Y2 y* Q8 c( h; j7 M问题:) G' `0 p: P' Y9 l1 t. D$ l! O
After running the model for 10,000 days, what was the average number of loads in each process?3 y8 U$ l* A, {3 `2 }' l
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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 arriving9 @$ Y* k7 s5 C
move into Q_wait /*Capacity is infinte*/; X$ }  B/ g4 d3 }9 C  k
move into Q_process /*Single capacity*/
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+ _! [4 f4 x0 q) c) c, i9 ?5 Uuse R_A for n 60,10 min /*Resource A*/7 [( ?& c; w% n, \

  w- l  s. d! v  W- [1 h; `send to P_B  P+ F( H- R; C
end5 D9 o2 D+ x1 v1 P- R3 {( n
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P_B and P_C is similar
2 ?1 ]: Y+ i2 o5 Xtriangular 30,60,90 min, x; O0 p! A8 s. d$ G
u 60,30 min
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in P_C, you need to send to die.  d2 S! G1 Y$ a2 I
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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.& k' [. N# }  E* w9 [0 N

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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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