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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,: Y* v0 d( n( k5 a! r% 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.1 o3 p; Z; |2 Y! z
  Loads are processed by each operator for the following time:1 _% c1 m4 r3 V3 s4 W
  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" H5 ~$ G3 H- C4 H  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 S8 ]  V8 w3 e% G" a  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.7 U6 z) H/ F  k1 F; v
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 p& X- `: R! A) w

1 Q. [+ r' x7 ~; }& U( g$ x问题:& _! M0 E5 g+ ~& G
After running the model for 10,000 days, what was the average number of loads in each process?0 \" _) V# b4 `2 [2 }( N
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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  F% N/ r% \+ K$ v( W' G& c* s7 m
move into Q_wait /*Capacity is infinte*/5 _8 U7 A" I' ?" B  t- }
move into Q_process /*Single capacity*/
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2 j% h' m4 ^" J/ ^; [! uuse R_A for n 60,10 min /*Resource A*/9 J3 M: H) _; a3 M, ], g2 C
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send to P_B; F. x$ ~) O+ l+ J3 O& ~# H
end  Z, L" I  d6 R" g) f6 Z

2 V# x$ f1 \) {* O; `) S0 d+ fP_B and P_C is similar
& ?) L  ~( `% Btriangular 30,60,90 min
$ r6 O* m. m& N6 `* X# Au 60,30 min9 }: p4 O2 `1 g- [8 d" A
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( e% V: E, _5 M5 a* ^/ p! g7 ain P_C, you need to send to die., {) ?7 q: p0 ?
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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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3 K  N6 R  ]1 g7 X6 r0 T4 W( k6 rRemember 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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