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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,
8 a6 i# E  p& ^+ l: B  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.
& l; Y. g" l; r  N/ }, i  Loads are processed by each operator for the following time:0 {" p# l( E: k* h! b
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
+ ~; e# g, Y* r: ~; s9 M8 S& 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.& K; L6 g7 C8 @6 _/ P) I
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.  T# N$ A5 @: [5 e9 K  D
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:
& x1 E+ Q7 p* K0 _: g2 [After 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+ j8 l# q8 Q* C: S% q
move into Q_wait /*Capacity is infinte*/5 \+ {9 _  `6 n0 L  ]' D8 a
move into Q_process /*Single capacity*/: N0 g/ G9 Y! w2 v

( X2 l  y8 S. {1 @; n1 Z2 t- w: }use R_A for n 60,10 min /*Resource A*/3 x, Z' E+ b7 q/ \! C
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send to P_B
/ ~# g1 x, b" W+ R2 qend
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! |9 L. y7 |( eP_B and P_C is similar
- S0 ^9 V: a& U5 V2 [triangular 30,60,90 min% U% g. T) B1 O& Y" p9 e) d
u 60,30 min
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in P_C, you need to send to die.
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6 w# e$ a4 J3 o( \. D1 f2 _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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( O; M4 A+ a$ K  u: A, CRemember 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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