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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,( ?( c6 t4 Y1 P/ _8 H
  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.
$ ?5 W% |5 T, q  Loads are processed by each operator for the following time:
" V& E2 s: [: l" X. c& r6 }  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.4 z* y' f; t* J
  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.
5 o7 L7 S; |$ p7 c+ p1 T$ s7 @, v  Worker_C does the job in a uniformly distributed time between 30 and 90 mins." D+ [+ \! u8 ~5 T7 i
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.& G9 U7 F  f) W' t6 r& C
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问题:
( l4 J0 q8 l8 u) X1 n9 \7 UAfter running the model for 10,000 days, what was the average number of loads in each process?# _( M& y9 `" Y* M* G

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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving: k: C6 ~% [; X) V7 ^% U* G* h
move into Q_wait /*Capacity is infinte*/
, u1 H4 n! r4 N" C" ]# I2 @move into Q_process /*Single capacity*/
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  a8 d7 `& q+ D( x5 S/ Luse R_A for n 60,10 min /*Resource A*/& \" G6 K2 R+ ^' X+ R6 q& g
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send to P_B- I8 Z/ q' p9 e9 r$ U, d1 {. k
end; D- ^7 v0 Q, x3 x6 A& S4 G
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P_B and P_C is similar" v  G; E& }# m
triangular 30,60,90 min8 x" `6 G  E; t  t  M: y! _
u 60,30 min6 w! c2 I. L, \$ F6 a1 d
3 D9 Q, K( R* u( @& k  }

( P. i( x" H' |2 z2 _in P_C, you need to send to die.' b% _* X* N* R. \3 e0 }
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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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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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