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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,0 \. M/ k' f9 ~" q; a" V
  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.. }" @! I4 Y! s! {: L2 t
  Loads are processed by each operator for the following time:8 F  o& S7 J5 D5 ~
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
& q# k( t5 Z) S1 K% i) A; U8 Y  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.
, K2 O% X/ J" i+ N% i% {  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
# m" ]7 k6 G  y9 BSend 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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# j0 Q' L! ~9 [问题:) i, s/ Q8 [% o1 A) p
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
! U7 _' @2 }' I0 Z5 Vmove into Q_wait /*Capacity is infinte*/
/ @) D0 c1 n- xmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/' y3 {$ o, h$ g( h- @/ |( U- m
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send to P_B' M/ G7 q: q' C2 l' O; X" `
end
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+ ]- R7 z- \% uP_B and P_C is similar
; P3 `3 a/ W; A5 t# j& P4 ^triangular 30,60,90 min
- q- l. `8 L  a1 g2 F5 |u 60,30 min
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4 ~. e* z: ^4 j  ?9 O5 o; P4 f) }& Win P_C, you need to send to die.! b: U/ ?" u/ c

( V% _( L+ I& _) ~0 B5 p3 ~  NThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.+ b$ K  x% O8 ^" u* f

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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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