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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,/ I% e9 A; ^' a) \
  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./ M$ k) d2 B! B3 U  E+ C0 N
  Loads are processed by each operator for the following time:4 z. X, p5 h' H. w
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
3 G, O. F9 W& a  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.
" L- b3 V/ s# t% k6 D- O  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.$ {" d' t: N/ k- Y8 ~5 W5 j2 \
Send 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.3 m5 M% i& q) [4 ?( k

3 T  R6 p# l+ A' B问题:
  b3 e  y0 T# a* XAfter running the model for 10,000 days, what was the average number of loads in each process?
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$ u' p# B. f6 o不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving0 Z# l% U) X2 @, ?" [7 f% l, w# c
move into Q_wait /*Capacity is infinte*/& |' g2 q0 x  p/ ?
move into Q_process /*Single capacity*/! a7 V% w% e, b* i+ B. R* j; u

) R" @' \% l+ `, `4 Puse R_A for n 60,10 min /*Resource A*/1 [  u" P$ j! b* t# N" x! y$ X

6 L+ p) N/ ?: Csend to P_B
" ?. `* S! j" P, H" @. N3 V2 kend
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P_B and P_C is similar
$ _+ T- ~/ h; U: }triangular 30,60,90 min( M3 A* c3 o3 r" x+ q+ K
u 60,30 min) E% F1 ^2 m& z! g# F
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3 m% ^6 \4 X2 X' P- t2 j8 {( a, t
in P_C, you need to send to die.
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Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days., {1 C3 G5 s2 S

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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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