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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,! O6 Q, B; }1 {/ g1 c
  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.( c1 h; M1 [; k) Q' W+ f
  Loads are processed by each operator for the following time:
/ o7 P! k3 G1 \+ k$ J/ Z  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.( m; N8 ]7 _6 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.3 f; L& Y- l" K2 l- F: t2 L$ q& w
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
1 l2 e5 ]5 X. Y" _6 CSend 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:
$ |, q& f, r. K7 n9 r( N6 B- @, K1 ]After running the model for 10,000 days, what was the average number of loads in each process?
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2 |0 C: X- R. m$ Y8 b不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
: X, N% N  r3 y! Y, |move into Q_wait /*Capacity is infinte*/
' C0 D5 }# w% B+ e' cmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/0 }& Z+ ~7 }) o- g7 f! E6 B( R$ S
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send to P_B
" i0 d8 @& t: }7 t# q. fend; K8 e5 P6 v& t' v) I

9 m1 E- ]( u5 r$ n9 [' C- L9 P3 iP_B and P_C is similar
8 j! S; c6 A( @) D( G' Atriangular 30,60,90 min  m  s1 I4 Z5 V  }$ [/ `! u: }
u 60,30 min
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; ?  t( V1 y- W6 g5 r  Z, fin 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.) F/ E+ y9 m: s# R* Q
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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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