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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,$ S) e. e- }& _. J" y% e# \0 `
  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.0 b$ O: Z7 {8 x* }+ ^# i: A# o) S# ?
  Loads are processed by each operator for the following time:
0 d' E6 V2 @) N! Q; R  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
' n6 i4 W! P0 m2 ?0 K  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.; b1 p2 v0 w) p/ Q, a
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
+ B# Z; x2 ^6 l( t$ V( N' CSend 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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6 x1 F# w6 x7 r1 `% C9 Q问题:
0 h9 v3 [# J6 }! `! g: y& vAfter running the model for 10,000 days, what was the average number of loads in each process?7 n6 N" N: Y0 F5 [* c

- H2 W# F( f1 r不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving: `% M( z; u2 X1 x2 h0 f
move into Q_wait /*Capacity is infinte*/3 D8 D+ q2 c/ |! X
move into Q_process /*Single capacity*/4 E) R/ T& w2 n/ `# d+ v

  x$ Y/ v# \. N, a& Cuse R_A for n 60,10 min /*Resource A*/
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send to P_B
" m- \8 a! |! u$ Dend3 w4 T1 T- v( j, X
  i5 }& ]+ p4 _2 i
P_B and P_C is similar( w$ R! a) z3 u, ^6 t5 _
triangular 30,60,90 min' O4 L( U- ]- s+ Q
u 60,30 min( ^& ?* F0 P* V4 E2 e) D/ E, z
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in P_C, you need to send to die.
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2 @- }$ X  g5 [5 \/ FThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days." R1 X' L* H- U! f/ `$ ~% Z3 X
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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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