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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,
5 H; a: d6 D7 {  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 c* G# _# z# _
  Loads are processed by each operator for the following time:
+ p, ?  H9 r3 V2 Z  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
1 N) Y- L' Y6 \3 F0 O6 ~0 t# z  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.
% P/ P1 z8 b$ y  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
. \3 l( n. u/ Y% zSend 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./ [% N/ u5 V8 F( d

! |! u; l8 p+ L问题:
# Y/ j& ^- s( T! C! D4 S/ b; G6 lAfter running the model for 10,000 days, what was the average number of loads in each process?
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' y6 c: M, Q/ w; k不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving; M: m2 ?6 k( A
move into Q_wait /*Capacity is infinte*/
- y! @8 }, y" J4 e- L& ?& [move into Q_process /*Single capacity*/
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8 U$ g" q  ~. S: X" ^use R_A for n 60,10 min /*Resource A*/# n7 D( d1 ^9 Y( k, ?
" ~/ U2 x' y6 i* J& t  Q
send to P_B4 \0 U+ f+ z( u# `
end+ U, R8 ~/ Y3 s) s' o' R2 X* ^' x
$ X. ~* {. Q- Q
P_B and P_C is similar' l2 Q" _% D# P" e9 O
triangular 30,60,90 min
: L6 h$ L; @1 z7 uu 60,30 min
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in P_C, you need to send to die.
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( N  ~" i3 ~+ I8 ]' bThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.' K: Q/ \# s4 }. s) n' I' _
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& {& C! m% C# `! r" r( [8 K7 ?
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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