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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/ M+ C1 ?8 ]5 q' a2 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.) g) u9 {" L; h6 d/ ~6 J7 w
  Loads are processed by each operator for the following time:
; ]+ w: h* B5 c, Y1 `8 z  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
* e; T) J! |( \) x8 b  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.
$ o2 c# I9 Y' z4 D  m+ |  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.6 _  `0 a9 B: k0 y4 h# F
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:3 ~8 Q+ x- h$ r# |* |# f4 i3 O4 ]
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; w& J: W5 _7 P( R, u& ?
move into Q_wait /*Capacity is infinte*/
$ j# K+ T/ E. e# k, X5 l$ |- bmove into Q_process /*Single capacity*/" x5 |% k- G! F. R* g! \
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use R_A for n 60,10 min /*Resource A*/$ w. }! l" R% N7 H7 Y1 w9 ]
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send to P_B
4 ~  T8 a6 u3 M; |: z5 J; Uend% Y9 i' v# U" L2 j0 ~% g8 P

" C! ~! N1 _  D! L) LP_B and P_C is similar: R0 R  g% p% Z* o, E: i  A- }9 W( q9 T
triangular 30,60,90 min4 o( @8 A; o, B+ M8 u% Z1 n
u 60,30 min
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in P_C, you need to send to die.! Q6 Q) L$ n: |
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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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! ]2 s# n1 T8 ^% QRemember 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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