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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,
+ w* ]  W$ x0 X& \5 Q  h  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.7 s+ ~6 K2 N! B5 [/ W, E# }
  Loads are processed by each operator for the following time:, O. C& z# @0 V+ K& s- d6 ~& L
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
; N7 m+ f: |; K3 h3 e# e, m0 s  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.
9 d( r* k* f9 T8 p) V, u  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
( ~* {0 o; N5 b6 ~- XSend 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.1 Z8 F4 V# ?4 Z2 F' \/ X

. l" o% f- p. _5 R, ^4 q- K0 T问题:% q0 O! w+ q4 ^" E, m1 W2 s( ?+ Q: J
After running the model for 10,000 days, what was the average number of loads in each process?
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不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
  M$ O7 r! P3 H4 ^move into Q_wait /*Capacity is infinte*/0 l2 [+ f% ~1 Y  @, R5 d* D
move into Q_process /*Single capacity*/  \0 J% ^  k( B4 A! l2 n3 @

; Z- j" U4 t- R! F1 Q  p! o+ V/ l+ Guse R_A for n 60,10 min /*Resource A*/
% {( V( K# o% s1 r2 u" ^; P5 v# h/ q; Z* m; h  f2 ~6 v
send to P_B6 s) g" x% y, m5 g9 h- R5 `
end
9 T; f% Q* _" b, N
, \0 ]$ i$ O- U0 a4 jP_B and P_C is similar4 N# X; T, B5 n1 t9 S8 r' m
triangular 30,60,90 min7 d$ J& ]/ m' z  [6 b
u 60,30 min- K7 _' l$ E0 N! ^) y( J

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; F5 z6 }) @2 D9 t% E6 cin P_C, you need to send to die.
, y' o. h# _+ \0 E
/ J  C: H4 I7 c( o- K/ yThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.% E% g2 _3 ~! B( O/ T. E5 X. Y
: \. }% G- s, ?5 f9 L% K0 p

. t1 P! A8 y$ r% C& H1 ERemember 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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