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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,
$ S* |, C$ a# o+ f, o. 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.! r8 d0 m/ z0 Y. M
  Loads are processed by each operator for the following time:9 |5 d5 b5 T" I
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.6 r6 k! D, Z! Q- }3 P
  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.
& N! u- i) ~9 g: M9 e  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
! C) y3 c, O8 s! ^. ?# ^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.$ T$ o9 E7 ?6 x" T5 ]/ ]

3 M' N5 t- X% J/ C. M* h; n$ j% I问题:" k4 {, `$ g3 B. z; _1 U5 V: Q& y
After running the model for 10,000 days, what was the average number of loads in each process?6 H, I+ I3 V/ d" H
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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& U- l& d6 ?1 O. s( A6 h# d
move into Q_wait /*Capacity is infinte*/# [8 U1 x! Q0 P/ x( ]( I* N0 J2 B
move into Q_process /*Single capacity*// |( n9 r2 ?% S5 N9 T9 l

8 v6 ^' ^0 T9 S& p, }8 L- guse R_A for n 60,10 min /*Resource A*/# N+ k, z5 ^* v
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send to P_B( d; x' V5 y. e2 @! P$ Z3 f
end
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P_B and P_C is similar
, f( x. D/ d, ~7 Atriangular 30,60,90 min9 o9 X: R; w6 n8 m4 V$ a2 N' t
u 60,30 min
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$ x3 k+ c5 A# A8 Q# f* U
2 ?( \: J1 d# G+ z" P* ~# fin P_C, you need to send to die.8 Y' E( D5 q0 ?- {- d3 e  m

0 M/ Y) g! A7 I% i# U# v* lThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.( ~$ r$ S8 n. ]  w
1 A3 P' V0 v; B. G8 Y: a  ]
9 L/ M3 T6 B3 }+ B, U. `( D5 d
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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