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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,
/ @6 ^7 x% I, Q7 ~! E( }# q8 J  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.& ^7 }5 c" x* l3 h: @0 x8 J
  Loads are processed by each operator for the following time:$ g7 P# s! X, v2 t8 v9 Q
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins., ?! G+ T, R1 K$ p* U" D
  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.4 W! O8 e7 d9 T  u  N/ c* m
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
4 v8 Q6 D) j4 x: e% w, rSend 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.! b3 ^: U9 E" H0 O0 x+ }; h
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问题:% p' T- O) b3 J- M
After running the model for 10,000 days, what was the average number of loads in each process?5 n* M7 y( f1 n- Q7 R1 x
6 G" I  n0 @$ z, m/ e* ?
不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving9 g1 M' x" {* K! J: L' C; u- p
move into Q_wait /*Capacity is infinte*/: C  g( ?6 U( u3 N) a: c9 |
move into Q_process /*Single capacity*/9 ]+ _5 G: i/ o1 {0 Z
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use R_A for n 60,10 min /*Resource A*/
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send to P_B$ T3 x0 t' T: Z3 D
end) F4 }4 p7 F3 D' a) k
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P_B and P_C is similar
; C5 b2 F0 T, Y4 ntriangular 30,60,90 min
2 R/ E& B7 f$ v5 N+ y4 t& ~u 60,30 min1 w5 W7 c0 P0 ~3 S+ ^' h

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in P_C, you need to send to die." b: S! K+ f) E, `0 |
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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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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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