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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,
, X# ]0 B( J7 R/ ~) ]  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." k% r& w$ e  V$ [% v# B% i+ U6 u
  Loads are processed by each operator for the following time:
1 ?6 d% R, h2 m  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.- E. O( v- L* k/ L
  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# T+ v  |. ^0 D! N  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.( t% W/ ?3 A4 p3 m3 @1 {
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.1 @2 f  `! p; [( L5 T; M0 N

1 G) i  e0 P" R5 d( t问题:
, l, \( ?6 J* m, M) oAfter running the model for 10,000 days, what was the average number of loads in each process?: c$ J& t( j. l! v+ I
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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
9 O& N3 Y; L" i' X8 T: jmove into Q_wait /*Capacity is infinte*/1 e. X+ L$ U6 [  N) B, X0 Q! w" V
move into Q_process /*Single capacity*/
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2 D% e0 g# T, i' ]) V9 y! yuse R_A for n 60,10 min /*Resource A*/
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send to P_B
# c! ]7 a+ v  Jend
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P_B and P_C is similar
# I3 A5 [6 G* ~3 Utriangular 30,60,90 min- y' a" M- [- i# N2 g
u 60,30 min% q5 r' u- d* C8 p+ ]8 A
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in P_C, you need to send to die.6 L2 a% t" A; ~3 N# B# c

' i- l- b# M: ]$ \7 V- I( oThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.1 r, u, z1 i6 W) P! m

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; l& w0 ]  o; |0 a5 w3 cRemember 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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