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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,  x+ {# i6 H1 n6 {& C
  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 \# a5 k! G+ l+ O! h( N  Loads are processed by each operator for the following time:
- D) J. S7 ]* i5 v  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
! J0 {' v' m  C% L  o1 X  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.
6 ~( n  D( m; Q" h( Y- _  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.) J* \+ {) E2 k3 _+ H+ z
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:8 {/ q' W+ l' }: V9 y- U1 C) c
After running the model for 10,000 days, what was the average number of loads in each process?
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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 arriving
; Q! n7 G2 P2 `5 Y- N$ d% Z( N( {move into Q_wait /*Capacity is infinte*/( b9 f+ R) m. R$ r  [) T
move into Q_process /*Single capacity*/" ]! l+ R4 U! ^0 a" M) j
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use R_A for n 60,10 min /*Resource A*/5 [. B) r1 s9 U6 @7 e

* [% D# u: _3 i) i0 o3 Tsend to P_B! W* O. n0 m7 n
end; q/ }" u% t* x' ?2 ~

6 R* M0 @7 f8 I' k. EP_B and P_C is similar
4 `& m& ?2 @$ ^0 [- p1 Rtriangular 30,60,90 min0 I8 E; M; D& _' w
u 60,30 min% `3 {3 p- N* _8 i) N8 X5 b

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in P_C, you need to send to die.
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2 V* n$ P$ u' L- j: M4 S+ ^% JThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.9 z& x, g# u, \* g( L4 V$ 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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