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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,
! I; J( K2 h5 ^2 m* d+ k  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 a4 }' H) g- A0 B; y  Loads are processed by each operator for the following time:
0 E8 O7 m7 p2 a6 |/ @/ d  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.: D* o) Q# n/ q" ]3 ?* s
  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.* I/ V% P( p0 `/ s
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.5 {8 u5 }9 ^' p1 X8 k1 R
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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, p3 Q2 F- E3 i9 m6 X% m1 O  S问题:$ z4 b' _1 {/ S, J! w# e
After running the model for 10,000 days, what was the average number of loads in each process?
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4 V8 d1 g# L# j6 O0 s8 a/ y2 |不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving; q, b2 Y- I) s) n0 p$ h0 p
move into Q_wait /*Capacity is infinte*/+ ]  Z  i" O# k6 R' h9 u& u1 d
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B/ K- s  l4 }! |
end
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P_B and P_C is similar
+ A' N+ p: s* {- ^2 gtriangular 30,60,90 min
3 b6 q0 l- ~3 ]/ Z5 b9 o: Nu 60,30 min! o1 p$ r- k* R% y
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2 z1 B. D- |8 p8 Iin P_C, you need to send to die.2 b+ e# s; W# C: v5 V/ a" @

7 }& o( R0 s1 t" q+ M4 Z( p/ ~Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.% a1 |+ ^4 c& P8 i% W

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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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