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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,* S7 ?4 {. n. v, u' X7 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.( }8 l: _- d8 Z! L4 a) m9 K
  Loads are processed by each operator for the following time:
+ Z; [8 S* }) L  y  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.2 l2 K' a) ~7 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.
+ m0 }, K; G5 H" U7 m7 }  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.' E+ K2 x( c7 _  _$ g7 ^; Q
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.; T5 d7 O, n/ M! y. k( n5 m

8 a, E4 E* d1 o问题:
% z& T9 n; U, |+ t8 bAfter 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
# V. o& G6 L" W3 _move into Q_wait /*Capacity is infinte*/
/ b! I5 a( _1 E, t. e) m& hmove into Q_process /*Single capacity*/. T$ \: _& Y1 I) J
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use R_A for n 60,10 min /*Resource A*/% y  r$ J& G# I; N, a/ g
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send to P_B
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% l6 F% |+ O/ X. n& p4 `P_B and P_C is similar/ b" }8 ^0 O' f, Z0 X
triangular 30,60,90 min) J$ u: Q2 H+ V& \! s8 [. g
u 60,30 min
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7 E) D& h0 [8 W; d% ^in P_C, you need to send to die.3 j7 o( E7 x7 c( N$ `

0 i, h& q' K& e9 qThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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& |( a0 |; Q  a0 BRemember 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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