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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" V4 n9 W% g* L  H
  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.
( j; p) p$ \' i% t" q' V7 v  Loads are processed by each operator for the following time:+ g# i$ w+ w6 f" T% f& O9 n
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
. ~! l5 {; f. t7 [* ^  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.
+ w. Y, n: X1 Y# Y& W- g  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
) n& x( U$ P& ^6 vSend 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.) R; ^6 j! N0 Y+ J
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问题:
- a! I  ]( n( v% iAfter 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 arriving8 N3 j. Q+ Q" A' Y
move into Q_wait /*Capacity is infinte*/8 X' w5 H( T& F6 h* R8 p
move into Q_process /*Single capacity*/- d% b$ M$ C! t0 [7 F- ~3 A8 ?$ ^) w
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use R_A for n 60,10 min /*Resource A*/% c4 Y4 Y1 Z1 W# e( k- K4 Z

) K/ t/ _+ K/ D% u! Wsend to P_B/ T" L' E8 b* Y* s" }$ `) C
end. {4 _8 D  ^  J8 U: ^/ h/ ]5 m

. P# q& f8 V& g, T8 aP_B and P_C is similar0 H# R/ P% _: R6 Y
triangular 30,60,90 min0 ~! W4 _& x, F
u 60,30 min
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+ I+ k1 F6 A% B* Iin P_C, you need to send to die.
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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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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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