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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 g# f' C2 V9 n) 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.
8 Q/ f  c6 J3 j3 }  Loads are processed by each operator for the following time:6 \* F, z9 ^! {4 w
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.) I% G3 b. L2 R3 _* a7 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.
, i# K6 L9 R2 t  V" s$ t, h  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
4 c9 H# `; o8 [% {  aSend 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.7 \% C8 y% Y2 }

9 F; |/ [; b% u, E; x% t* I问题:! C, a( z5 a5 p: G
After running the model for 10,000 days, what was the average number of loads in each process?
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) b8 a! Z) L# j不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
3 `9 q, g: C8 e' j% d/ kmove into Q_wait /*Capacity is infinte*/
" x3 ]# G" [3 P- K% N! e0 Qmove into Q_process /*Single capacity*/
  X/ K5 N( |7 D; m/ v4 H2 N% S7 g5 @5 n7 E  ]( Z4 }
use R_A for n 60,10 min /*Resource A*/
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3 o% ?% e8 b: I5 v1 [4 j  dsend to P_B
4 _( c9 V0 C* {8 \! t/ F1 Zend
( A; k: T+ a+ G8 m+ I2 r& R: v7 L4 \: O/ y) N1 d, Q1 G" J
P_B and P_C is similar+ D# d- H( z$ l. |1 K2 m
triangular 30,60,90 min
' o( D# U7 q1 T' C! u) R$ {, Qu 60,30 min' A) s0 |0 P8 m0 U

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8 o; X' j2 ]5 o. Z3 [5 Tin P_C, you need to send to die.
8 z2 I8 ~$ T" K% _. B; Q8 k4 W/ z: E
8 }) _( T* C2 a- k8 q9 PThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.9 I1 {# D$ O% l3 i
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% Z: ^: {4 G- N2 m  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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