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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,
* q& P8 ~( r: m3 B4 i( 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.* ]/ t( h. F. g7 e5 e# B; ^
  Loads are processed by each operator for the following time:% S. e( I5 b9 ~/ c1 U
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.; H1 [  D. y: c
  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 ~$ `& M, _5 a  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
4 s" Y9 Z) a! @! |0 NSend 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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问题:
/ f) a4 W& u& h0 i" NAfter running the model for 10,000 days, what was the average number of loads in each process?  N1 G" V2 D( i) m; F$ V! V

0 n/ u: J1 p( E6 A3 y) x不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
/ t; x0 }! a+ }' }7 j1 O! smove into Q_wait /*Capacity is infinte*/
: y" q" g, }6 v$ Umove into Q_process /*Single capacity*/2 U0 G' M  {' O6 G0 m
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use R_A for n 60,10 min /*Resource A*/4 p( I+ m: f; F- h- o, m3 V

; D. J! q9 H% ]! hsend to P_B
; e6 r2 |7 P$ A+ z: h5 b3 Yend9 ?. A( w% F" \, k) d/ ^5 C
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P_B and P_C is similar
3 [3 I/ X  a6 b& Q( Z5 W; [$ [7 Dtriangular 30,60,90 min1 H# }, d2 M) ^/ E4 `/ U7 \
u 60,30 min
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in P_C, you need to send to die.
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) {, V# f. O. N5 ^  `1 WThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.6 K- p5 Z9 [! B$ X
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7 L0 i0 X1 I$ _0 [% f) gRemember 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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