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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 G# z$ {6 @1 R; D- F8 m  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.2 k8 ^( W  @1 c5 Q; U! D& L
  Loads are processed by each operator for the following time:
1 M2 A* S4 Q$ X2 P; I+ m  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
% o6 F3 P8 @( v! k( l  U9 c8 f5 f  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.
- ?' [7 ]; l6 l' g0 E1 o- N+ r  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
5 R: }+ ]( D# P4 ^- g) LSend 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.% r! p  d$ L3 v: V# Z

1 ^- f0 E- J3 u7 \' l; M问题:$ I- c4 D( ~, [+ A
After running the model for 10,000 days, what was the average number of loads in each process?
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" s/ a. t  v) h! L3 y6 P不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving: p7 o. ], C* |% K) E5 f- W- f
move into Q_wait /*Capacity is infinte*/
, H: S. T  O+ c1 N4 Kmove into Q_process /*Single capacity*/
) x- j& U4 v% R' K, t9 w; u0 j
- {! @: C) ^" d: B/ a0 |use R_A for n 60,10 min /*Resource A*/
3 P9 n' O/ w+ O$ V+ }$ a
- }' r) Z. [2 H4 f4 j9 Gsend to P_B
+ X7 w' r& h4 |( ]& g! hend
( l1 h) {7 {* H9 m+ s( B
0 a! I4 T7 ~  b+ S& E% d+ SP_B and P_C is similar, o" a: A7 ?; b% W: M
triangular 30,60,90 min( J# I) [% g4 M+ U% t1 v' @/ H
u 60,30 min
# O- S* I8 |% k: ^! R$ c4 G8 d4 `6 X' x' `4 \( X2 H# w; G

( L& r' i% B/ w6 L! q9 bin P_C, you need to send to die.
$ P' N6 U# }# y6 F
9 o. n1 j0 i( rThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.& s- B- {# v7 l+ [% h

' ^2 d6 [+ d9 Y7 g5 z. L# t1 V0 X2 {7 C
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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