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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,/ b! j4 Z" I8 M0 E
  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.
6 h( o, D! m9 F$ w9 x+ l  Loads are processed by each operator for the following time:; H: l' W. A( S0 g
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
# N) R7 p1 o5 L0 P9 w; X1 R2 c0 n$ a% w  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.8 y, [* P! X# E5 }& E
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
% Q% V" T, n# ASend 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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  c0 n1 T+ @" ~* d问题:$ H5 _, O$ Y1 G8 s7 ^* L
After running the model for 10,000 days, what was the average number of loads in each process?2 X/ [/ M4 S+ Q8 Z

9 W, F5 S* {# i0 H+ M( ~不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
+ I& S, e0 |" x# Y" W5 jmove into Q_wait /*Capacity is infinte*/2 @  [7 J7 g' W8 N7 P& s. V
move into Q_process /*Single capacity*/- J3 N% M# v& A2 D. q2 Z7 M  J
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use R_A for n 60,10 min /*Resource A*/
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send to P_B- A7 v' o, n- l3 W6 X2 b) @4 K
end7 _# T/ U( \' @, K& o. N" j0 b& `
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P_B and P_C is similar
9 K; U0 [, ?' o  M; U# B4 Itriangular 30,60,90 min; a: ]- G: d! t2 _* q. S, V  R5 F
u 60,30 min* v5 x6 ^+ J. t

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, |: Y7 F& j3 a& Y) f$ t" Q, H4 min P_C, you need to send to die.; f( f: [2 Q+ i% e( v/ L2 _
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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.
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% c' w: p' }) ~3 z$ NRemember 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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