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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,
1 q; ^  v/ q) g% ^6 n3 n$ e6 r; x# |7 B  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.
4 X# r: e" x9 J& S' x& l7 G  Loads are processed by each operator for the following time:  P: O1 Z1 R/ _4 `3 X
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
5 a$ Q5 z' _- N( 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.* o6 v' G% G( h
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
: Q3 f! h" _6 [0 V( N/ WSend 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.+ z4 d, h% z. X+ w

- H& F# A: S; X8 ?问题:3 W8 p4 C8 P9 E
After running the model for 10,000 days, what was the average number of loads in each process?: }; F, p9 T% @# }! \, l7 i

( }+ f, s+ q# ?" ]3 A/ N/ j" k0 R不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
! R5 I; N$ r  f9 s8 I& W% Nmove into Q_wait /*Capacity is infinte*/) |- D; Q/ J/ L  g0 E' e/ r
move into Q_process /*Single capacity*/
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* L* s: t6 I" w- T1 z% ~use R_A for n 60,10 min /*Resource A*/
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8 p) R! h  ?* t9 W) Z& Rsend to P_B
) A8 J( l2 N5 r" i7 [end. e! O) X' `+ j
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P_B and P_C is similar
8 A% D* n* n/ M8 F" b( H3 u: Q. j. x" Vtriangular 30,60,90 min" h) m0 n+ E9 ]1 l& ]6 t: R
u 60,30 min
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7 B) C& C' b0 {4 K0 V4 y. q
: A1 }# A+ m2 iin P_C, you need to send to die.5 j4 L( k+ J! I: Y& X
5 f) k5 T# y# V" u# d
Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.8 T4 }4 ?' y0 n! E/ M0 G2 o. P
! {' ~* {+ [2 k1 Z( A
! p; _# H2 k/ s9 o" L4 \, H
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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