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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,
( Z; |, Z9 I$ p8 I5 v" m  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.. U" }* k  S( U! i! X0 h
  Loads are processed by each operator for the following time:
: F' z! N: t4 Q/ Y  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
6 C& P9 b. k( c$ T/ n  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.
4 W* @; ~' g0 y8 r  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
! d( @. x# t8 e' X. ESend 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 ~6 k& e# |0 I4 t& w( J
After running the model for 10,000 days, what was the average number of loads in each process?
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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving5 G. J8 ]' N, o2 J8 ]
move into Q_wait /*Capacity is infinte*/  s+ m) q: _4 j' m, G% o
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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" V% ?( l1 R9 U7 a1 Tsend to P_B
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P_B and P_C is similar
9 ~/ m6 g6 {+ ~/ mtriangular 30,60,90 min: ?8 Z; c7 L1 A" b
u 60,30 min
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* r) V" L2 w' x/ c' `6 o1 M( ain 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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