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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 J  T& a# d0 ]' D! K8 x  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./ b# F+ j* C/ `" _6 H6 y
  Loads are processed by each operator for the following time:& |( V: y( j) k+ D
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
4 B! O& l: u- [- Q+ d  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.0 Y' {2 a& P3 G# R& C; ?; [* g/ E
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
% f8 N0 s2 u3 A6 \7 S8 V: `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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) X; q9 o" C- W) T+ g( `8 \问题:
7 K( v* x4 _; R; ~5 w8 _After running the model for 10,000 days, what was the average number of loads in each process?9 `3 l* P9 n$ c) A3 h) A! _

9 U3 Q+ ~) r& ~, i不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
1 _& P9 k8 k* qmove into Q_wait /*Capacity is infinte*/! B# [2 x9 u0 P1 `+ Q
move into Q_process /*Single capacity*/& T- c8 k. A* x( g% @

+ K8 P7 F" l6 v# B* j5 R: j4 ~use R_A for n 60,10 min /*Resource A*/
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send to P_B
0 Y8 V. X4 W8 Q/ s% u2 zend
# B1 H9 t: N1 V6 ?. k  z* A& y' }- E6 \/ B% h, c1 a5 L+ ?
P_B and P_C is similar  C' n6 v% a4 J, u
triangular 30,60,90 min
7 ]8 q4 e/ b+ Qu 60,30 min
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in P_C, you need to send to die.
1 e) n# c% Z' u$ s
# \% X) D% A- V4 MThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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/ A1 g# D5 ~9 n& u6 r+ w, w
& G( @' n( ^* a+ p; hRemember 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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