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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,4 p1 S5 Z% }3 ~+ k
  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.
( u8 w. X, A; Y+ O2 d, K9 f  Loads are processed by each operator for the following time:
) U' R" Z- y4 J: d2 J" h  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.) \: z. ~5 |. C" 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.& {- ^2 d. B6 c, k
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
& ^4 W, _5 k: P: W  ISend 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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1 e) e* X7 t+ X0 r问题:! r0 B" O/ Y8 d9 k  ]
After running the model for 10,000 days, what was the average number of loads in each process?' [+ Y; I6 D% f6 r  R* P) @

/ p0 R  g: i, K4 H- d, I+ \不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
8 k) {3 W: b# ?' D/ ~4 amove into Q_wait /*Capacity is infinte*/
9 E  P# o3 Q* W3 f( H( j. `move into Q_process /*Single capacity*/
7 T2 {. b+ W/ v4 I2 S& J
  w  b3 q' {2 D6 O* P0 @- Quse R_A for n 60,10 min /*Resource A*/% b4 o2 R( p& X( C3 e. D

- l7 v) o$ C7 D9 z# w8 `" S0 Lsend to P_B
6 g; |. H" j% g$ J2 d2 f* Xend
9 A, j7 H# Y  W8 l( K7 l2 u& G, I2 h) V' p
P_B and P_C is similar9 ]$ w! \  K5 L* I
triangular 30,60,90 min4 c- K  L9 E5 K( |
u 60,30 min
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) i/ O+ J. x6 ^7 yin P_C, you need to send to die.5 M3 _9 |  ]% A- t5 G  h, ~- H

* k- ~/ h) A# c7 ]$ {; B1 S- hThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.* ]- q$ a3 E5 W- A
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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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