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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,1 R# T9 F* g: q' s; q
  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.; d) S2 i! a1 p/ S9 c9 O. L
  Loads are processed by each operator for the following time:, i. w) B' I: F2 s% p, a
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.- F  U8 M2 j, Q. r4 W7 _- G
  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.7 p  K7 B( I8 y. y7 @
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
  Z7 r" D# G# wSend 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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6 `  E" q' a; n9 s% N6 m% s问题:2 J9 u; g% {% S
After running the model for 10,000 days, what was the average number of loads in each process?
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* K. r$ w: [& v不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
8 r7 T) i$ h8 m. n1 W" I/ T8 e5 lmove into Q_wait /*Capacity is infinte*/1 p3 v7 R0 Y, m- Z+ g: @
move into Q_process /*Single capacity*/5 x! D, L; j8 O- R& D% M: M
7 `( _; o: A, I
use R_A for n 60,10 min /*Resource A*/8 U9 j; N. `7 i* d  S) e
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send to P_B! d0 l1 K3 s/ A7 T2 _9 t
end0 I) M* |, g! o5 V
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P_B and P_C is similar3 j7 U9 A- o# ^! y8 _# {
triangular 30,60,90 min/ u) n/ _0 n6 R" s1 D  C) k+ ~
u 60,30 min
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  O3 d. X5 j& o( m. p( C( Zin P_C, you need to send to die.& R' n5 L8 d: g5 X( ?: ~: C

& K: u0 j# q: M% K  ~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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) x. a( K5 U4 _8 C: vRemember 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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