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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,
3 r5 k* X$ ?3 z% H! L  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.0 M" ~( X0 }; A6 \4 B
  Loads are processed by each operator for the following time:& F$ q$ A; F( s! ~+ S+ @: _
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.3 @2 W* X, w: ~3 S- ^
  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.
0 x: T9 d( c% S  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.$ V% t3 y# b2 v7 A* u- e# \
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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+ k) A9 _9 \& e2 ?. H问题:
; B5 W$ O9 k( b0 R1 M0 yAfter running the model for 10,000 days, what was the average number of loads in each process?3 ?9 m3 ?: N6 Q% t. s) R* [" n* d8 [

/ |6 D# I4 v# q3 Y不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving/ Q! N2 l" h. W
move into Q_wait /*Capacity is infinte*/
, j2 d8 x$ S* T7 r6 F: Y, z# qmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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1 W  o& Z' W8 J$ f# d- x8 Lsend to P_B3 |9 |0 O( B) ^
end' z) x4 L  _1 y( b1 ~

% v4 s/ c8 ]. M2 u! g( V$ A4 NP_B and P_C is similar  g$ |  u2 d# `2 N  u  d5 n
triangular 30,60,90 min
& h! y* ]! y: K2 H2 Mu 60,30 min
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in P_C, you need to send to die.3 N: x3 |" b! O- ]' K  s! T8 }
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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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4 F) v! W* n$ B) _. R( qRemember 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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