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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,
4 O; v/ h! K" w5 m2 C; X$ r3 \  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.2 Z# [3 Q3 N6 }8 d
  Loads are processed by each operator for the following time:
6 N$ V: d5 ?: t  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
; n7 r" K9 N0 w& r# d; y& D  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.
  j; P; Z1 X% {  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
; B4 W0 e: V( Y3 L1 j! V( pSend 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.+ J/ Q" j+ d' O  A( q; ^8 u
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问题:( @0 ]# s7 f! ~! V8 q
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: J5 c( m/ T% j0 r1 l0 H# ^/ [
move into Q_wait /*Capacity is infinte*/
9 x: P+ ?% c( E% X& [move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/( }( I; J4 y# A) m7 B1 i3 O
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send to P_B
9 r* Z; m! c" y" E" \8 Q5 ^end
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+ K1 @; X" E( @P_B and P_C is similar0 U) h" F& n; K0 G5 o& y  X& f
triangular 30,60,90 min$ `% ?' |# T! [+ U1 M4 Q
u 60,30 min0 E) ^) b9 n( m6 D3 a

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) Z* m/ @! {3 T# I3 Jin P_C, you need to send to die.
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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.0 M. ~) n0 u+ Z9 _

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% r6 ^- o, E2 D2 D2 ]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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