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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,* s0 j9 H2 f- j3 S
  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., z* b  g; \$ o6 z& ?
  Loads are processed by each operator for the following time:
/ M2 [, c+ D/ n* {/ M0 _: g  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.. S  j& D, b4 j" t9 K" C$ _% L& c& J
  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.5 h2 r1 F1 ^. `; F8 C: V0 ~$ u! K3 B
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.& p6 ~) D6 i- N" h9 W+ Z+ l; P
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.
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  e- {5 _* U, }+ z0 c问题:
/ Y1 W* O# G) I( {5 pAfter running the model for 10,000 days, what was the average number of loads in each process?$ d- j- `5 t, ?4 \

% Q' f9 [$ N6 Y( c不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
9 ?9 x) L6 `3 ^" i3 L9 u" Zmove into Q_wait /*Capacity is infinte*/
$ m$ C( P- o, c3 a) I" ]move into Q_process /*Single capacity*/0 m# C: s9 M2 |! Q9 {
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use R_A for n 60,10 min /*Resource A*/
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# P% Y2 x7 m9 L* L! g7 [& J1 J: k; v8 @send to P_B/ @% T9 F' N, Y8 E% u1 t1 `
end
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) c$ _* ]0 F1 R0 s0 H2 }  uP_B and P_C is similar& N: d2 E$ X9 B- a2 E6 r  H
triangular 30,60,90 min5 W3 ?2 @* `* l
u 60,30 min) n$ l3 E) s* \. s5 ?) T

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% n4 Z7 r/ O! a7 F/ T& p5 Yin P_C, you need to send to die.! m& i3 c. \' u) o$ }

3 c, P$ F" R  I$ J0 P- p: IThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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$ e/ A' ~4 k- P3 J) g, NRemember 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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