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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,9 o5 a0 o/ e) E1 E9 ~  A: W/ R
  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.
6 M1 h2 b$ H, g6 t/ q8 w  Loads are processed by each operator for the following time:8 @9 V3 Q7 Y( T9 }1 g5 i
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.3 A: w0 W+ m* f/ Y: o
  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.& x' A) u+ K- V  o# R
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.5 |" ?, L6 }( x, s, S- m0 o
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.5 s8 z, Y5 d/ J6 F$ }; }
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问题:
/ C* a" a, N. H. I9 M  Z0 YAfter 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
% ]! \+ I8 a) R4 fmove into Q_wait /*Capacity is infinte*/
& K5 y7 |5 R. N% D8 B6 zmove 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( l' o9 f9 Y; c/ N
end  Y. M! A  ]; [. l

/ p& F, _  S- F$ O6 E: RP_B and P_C is similar+ S4 A  Z9 ]. q$ p1 {+ A
triangular 30,60,90 min) n6 p5 y' S8 x' m- q; N+ J
u 60,30 min
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in 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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