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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,
" P3 N$ N' k1 b" I3 ]6 a, A- 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.1 U- n- S, R2 n
  Loads are processed by each operator for the following time:) \- _$ I4 Q, P9 s, j
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
2 G# d/ |% M" N$ W9 F  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." |- X- ]! h' y2 X& U5 H
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
% \$ B& N+ }/ _! S; X- d; q9 A) lSend 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:
, L8 A( V" ?  V$ R( k1 A- {& ~After running the model for 10,000 days, what was the average number of loads in each process?
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7 O( F/ V5 q: t, h不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
3 Z+ L, Y  n! Y4 Q" |. U1 N0 Jmove into Q_wait /*Capacity is infinte*/* f5 Z6 ?% p9 w9 ]3 ^" X/ J! u3 m3 a
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/6 x' O8 O' g& B  p

: p( Y, Y+ j% _0 x8 Ysend to P_B- v! ?  r; T( ?
end( ?  a+ L2 h4 D/ u1 H' \

3 @; |% q4 ~$ m* E5 @7 R# UP_B and P_C is similar
# F7 E5 Y1 N1 ^) ^triangular 30,60,90 min6 P3 Q7 [, v& {1 S- w' a: w
u 60,30 min
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1 e  I6 ]/ A9 }6 U' v  s: j% X: Sin 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.
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1 x9 \# E/ j4 n3 W% gRemember 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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