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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,9 k1 G" N: N/ r5 N: g
  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.
9 z# O* I  I4 R5 Q  Loads are processed by each operator for the following time:
/ A$ o# v" t2 Q' m  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.. W2 H7 F: Q5 U6 K9 _* y
  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.) }2 ]0 m- R( o- r: ~6 W
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.5 q( X, Q6 U+ r* V" H0 F% W
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.
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问题:
) ^: ?* |$ }7 eAfter running the model for 10,000 days, what was the average number of loads in each process?
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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
3 P0 `1 e, ^5 w; \( Wmove into Q_wait /*Capacity is infinte*/& ~3 B' T! M0 M' r, c7 d9 }: f* j+ F
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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9 D" ?/ l4 ?9 D1 W" l7 }send to P_B
9 x% R. y6 _# \2 l+ _/ Vend
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P_B and P_C is similar( U1 H- ?5 N* w8 r
triangular 30,60,90 min
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in P_C, you need to send to die.1 d/ h' e' ~" \
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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.+ h( F: J: Z0 t3 q

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5 h4 ^$ ]+ l2 @4 T9 w' JRemember 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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