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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,
4 P$ r% K7 A7 J. Y  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.% z7 C2 F% _! D9 z6 g
  Loads are processed by each operator for the following time:
9 f. d9 j/ k1 f: m# ]  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
3 I$ q* r; Z) x- {* y, U' 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.3 L# `$ s) ?2 ?6 R! U6 I" T; v% o
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
6 p9 O6 n; A! _5 M; P; i2 ISend 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.! T, w; X- J% a) E/ A4 t9 G
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问题:
. t, B; o$ L7 g- P3 [9 A/ ^2 [" e# GAfter running the model for 10,000 days, what was the average number of loads in each process?% D2 M% O. A0 V, r. A6 y

6 E% S6 j+ R' ^- U6 B不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving7 l6 Y0 ?2 Z8 t: F, @
move into Q_wait /*Capacity is infinte*/
* }" I/ r! D5 Z4 D' f) \6 mmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/. G$ d' i  h2 d5 }! |7 u3 \; t
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send to P_B
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P_B and P_C is similar
  c4 a% t$ i7 s; qtriangular 30,60,90 min
6 C$ m/ H7 z( `" m$ {$ @u 60,30 min
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% t  b  Y" \4 F% O: C9 s8 z; f! D% }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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