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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,: h% o$ T" G% p) @+ i5 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.1 i! f3 X5 _; W7 B
  Loads are processed by each operator for the following time:# v, M) k1 J# |" L
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
& p% s% z# a3 Q/ _* l; m- y  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.) O: J9 k+ ?' X3 r  A  t2 F
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.) s- Z- [5 j# \# L" E, ?( j; c
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.+ m- C% U  P7 d1 C& D

& o9 v2 h( C/ k2 S- \0 k: ^问题:
, U" S5 f: D$ T: ^) t5 O& m  C4 |After running the model for 10,000 days, what was the average number of loads in each process?
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6 [4 }1 y  y: C+ R. o/ c) [不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving+ ^8 q1 H2 N/ J: J/ `# t
move into Q_wait /*Capacity is infinte*/$ e1 s! P( j/ x& ~5 x# a
move into Q_process /*Single capacity*/
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. M( M& u( ]6 |5 E. Z7 {use R_A for n 60,10 min /*Resource A*/' s& q# m! s* G" o
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send to P_B& O! w1 F! s& I- |
end
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2 K; C; B. |! y: B0 r$ A% a0 SP_B and P_C is similar% m) `9 ], G+ p; p
triangular 30,60,90 min: p4 |* g" [- g. @
u 60,30 min
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. n* Y2 Q, C& X6 k( i5 N; z6 Min P_C, you need to send to die.7 [$ w: z" v; _: X5 M
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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.4 `+ Y, U) D6 h5 z5 e% L# X7 u4 s) j3 l
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9 O7 d; ^, r$ I0 G! ~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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