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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,
" x, m( L& S4 \- {* j  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.
: u! X6 V/ y0 p' z/ s1 s  Loads are processed by each operator for the following time:8 d7 f6 V+ c  J& Q$ Q
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
1 T5 U. }, M1 n% o# f! O- [9 W  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.
" D; M7 {* \# X1 u' B5 \- K  X  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.$ p$ k' q* t) k
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.6 q7 l# e- _- e: D7 I1 {. b
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问题:
  i; a; \9 }* S/ r6 ~' T" P0 fAfter running the model for 10,000 days, what was the average number of loads in each process?
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9 V6 [5 {* U8 T; C' c不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving+ H1 i7 p; I0 ^$ j  _3 X6 q
move into Q_wait /*Capacity is infinte*/
8 M0 U( {9 q. n5 U4 ^, Tmove into Q_process /*Single capacity*/4 f0 P% T* d, @" G: E) {
6 ^& ]( X2 z8 e  A4 U
use R_A for n 60,10 min /*Resource A*/# `- Q  K0 f3 W: O* h

" P3 k! o# X' l! N  [8 Hsend to P_B
1 k* r0 R  F8 H4 n8 dend
6 D# {+ P4 U, f, k
7 L2 v0 G# r* Q% ZP_B and P_C is similar+ c# N' X1 f6 l  K( W! z/ i% T
triangular 30,60,90 min0 |' _' O& c* C
u 60,30 min+ E4 ~1 d- Q1 M, S

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! D# M) c: s- U7 Lin P_C, you need to send to die.
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) }8 \: F' N+ o/ i5 UThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.. m4 H7 M/ Y/ W0 Z

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$ A8 g) V0 J. Z% Z3 n: e+ }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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