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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,, E9 @: z8 Q3 j2 Y/ [; T* {- u/ ]
  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.7 H& \2 @) ?5 e2 P, ]
  Loads are processed by each operator for the following time:3 P* Z# F2 x8 Z; C' o
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
9 O. F7 f" j% p) a5 }0 X  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.
8 n* u! N6 ]& l* c, l5 z  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
# H2 P) e+ \/ m% FSend 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.1 k! ?* L0 A0 y" \) c

+ b1 E+ B, Z5 R7 m! m) T$ ^3 j问题:
4 E& U4 ~' ^& R$ n6 X! \$ _$ W- uAfter running the model for 10,000 days, what was the average number of loads in each process?
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( V6 Q$ M4 L% c/ i; X1 }不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving" i4 o6 L- C& h8 t8 \1 I
move into Q_wait /*Capacity is infinte*/& z" ~9 }' M% g0 a" c; a( ~; L) f
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/" _5 Q2 D7 _4 q4 J2 f( K

: T5 j' O0 B+ f0 X+ G: d1 Rsend to P_B
5 u2 I% u6 M1 _: e" qend/ c/ r6 ]1 T. C  Y; x: B9 f

9 u. e7 z( `+ v1 \P_B and P_C is similar
( u: s7 [- K( A9 R& `triangular 30,60,90 min2 f5 m/ H( M$ r3 U/ ~6 D2 x
u 60,30 min3 ]) y# J( S& W9 I
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in P_C, you need to send to die.
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7 @% U( p* a7 G. X7 `- z7 PThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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1 W4 c8 A5 y; D% z  q& xRemember 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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