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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,/ z1 U  H: {7 h# W
  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.  X0 V) e$ m. F3 L$ C
  Loads are processed by each operator for the following time:
  _& P$ A$ G/ E; r$ b3 b  A' X* Y  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
# W. U% P7 i) X2 E4 n2 q! o$ k  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.. r2 d( w+ U- v. Z, s; }9 s7 J8 {- c
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.% e' K* A5 B, k/ \
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.5 k6 M" M0 t' q5 q

- C+ W# \' u4 l% D问题:2 C- e2 N/ r% n0 ^  h
After running the model for 10,000 days, what was the average number of loads in each process?$ A; c5 a  f7 U1 T1 G3 f3 I% W
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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
' q5 s/ o5 h. t2 B3 Ymove into Q_wait /*Capacity is infinte*/) N* F7 K4 a2 E! i# U. f
move into Q_process /*Single capacity*/
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6 n- v) s0 m: I; h4 Quse R_A for n 60,10 min /*Resource A*/* t. a/ I% b' }1 s" p( R5 |
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send to P_B' B: s9 R/ }) q, }0 q! G; Y3 ^
end4 v$ \1 l) G9 Y; Z+ {2 M  R
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P_B and P_C is similar% v1 ^/ q! V# j& P0 ~9 W- K
triangular 30,60,90 min- P  L  Q! f5 u  A+ c! A* e  q* Z# ~2 ]
u 60,30 min9 E/ ^3 S- r" i( }* V4 L
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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 @3 r( u8 a# I7 P
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8 p4 Z; S( m' a* x2 mRemember 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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