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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,
% j7 g- L. ~/ K, ~  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.
3 P- {1 q+ p1 s# V% S8 X  Loads are processed by each operator for the following time:* q0 D# }6 H  V" I) ~0 F6 H
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
7 N; r$ B! W$ S1 k. ~% a  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.
7 |+ k* m* v, N- e2 V8 G  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
+ E* y! P; Q8 W! i7 jSend 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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2 v! Y) I' d  a- a问题:
6 i* n. Y& b1 K8 ZAfter running the model for 10,000 days, what was the average number of loads in each process?. T0 V9 U8 R0 g, W  K7 c: j+ V  c# Y
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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
' W, d. J; Q0 E" m$ n% rmove into Q_wait /*Capacity is infinte*/, H+ R: T1 }# v$ c! c
move into Q_process /*Single capacity*/
+ k0 _( \. r6 U; k5 D8 a8 `$ }! z0 ?4 {8 N! v0 d$ T6 U1 F
use R_A for n 60,10 min /*Resource A*/
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! W5 Z7 `: Y7 a) k2 ^* d  E; }send to P_B, ?# \) h/ a+ I& O0 C
end7 L% X" n' P; ?
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P_B and P_C is similar+ D% ^" ?8 v" ]
triangular 30,60,90 min, R9 D) t# l  e' ~6 }/ z4 }
u 60,30 min
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6 V2 Q- F. W1 F4 Q) Jin P_C, you need to send to die.
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. B6 l$ t; Z: A6 NThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.6 s; J8 R# E" P: z4 L1 f! P" e

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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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