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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 S" t# S$ 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.+ p$ E" Z3 ]; A8 U
  Loads are processed by each operator for the following time:
- X8 I3 u6 U& j% U% U0 l  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.' n$ V& K/ |, H# 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.
" K) X& I  l$ z' n& C  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
! k$ ~6 h- j1 }1 P( z* YSend 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:
5 e& V; n( O# S3 w" SAfter running the model for 10,000 days, what was the average number of loads in each process?
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7 h/ F! c9 h2 C+ i  W不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving/ S" v9 \% H+ I0 \5 g" m+ K
move into Q_wait /*Capacity is infinte*/- r: {8 M' }/ d. \: P, Q4 ]
move into Q_process /*Single capacity*/
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2 g- H& k6 b8 {8 Q: q8 I6 muse R_A for n 60,10 min /*Resource A*/& n: y; d* o* j" W6 }. A# I  u
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send to P_B/ t/ W6 T5 I$ l' x
end9 v( _/ I4 L1 b% G& s5 J& [
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P_B and P_C is similar( N* f$ G. V% M% X) w* p
triangular 30,60,90 min- W+ |, i/ N( B( Y* ?4 N
u 60,30 min
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) S% V- y4 d5 u: k& Ein P_C, you need to send to die.
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9 t) b% M' C0 @9 ]) B! {1 mThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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# Q# C8 r' S  z/ ]1 V* p& b! C  \Remember 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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