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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,8 i  W9 y1 \: G  K: 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.
, C3 F& `4 H( b3 z  Loads are processed by each operator for the following time:
4 W$ @$ G3 t! ~7 E  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
! f. R1 @, J# w$ G( N7 b  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.
) [( l! J$ Z9 I. p3 w8 [1 A9 |5 L7 t  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
6 L0 E3 M! R+ i' z+ W% mSend 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.
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问题:
! a4 Z' }% U1 Q0 V6 a( @; ^% f8 aAfter 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
+ c2 H0 x# N9 V2 u- S1 [move into Q_wait /*Capacity is infinte*/& x8 p; Y! `; A2 W" C; f3 a# R9 @
move into Q_process /*Single capacity*/
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5 l3 v( A$ Z# C0 w; P! h. P$ ?' Muse R_A for n 60,10 min /*Resource A*/
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send to P_B- n: E2 F( a2 ~, G: Y
end
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/ p# \2 u  L, Z. y: H: f: Y+ ?  [P_B and P_C is similar) j4 `0 t7 V8 Q; p7 `3 T5 {1 d
triangular 30,60,90 min
5 b) d1 s8 V7 P& T6 iu 60,30 min7 f4 l/ F& `8 ?* \5 i

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in P_C, you need to send to die.
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8 E# w0 H: z1 [; sThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.% q1 d; d" L: @, p$ I8 M

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1 h* s6 P* O% Q; t. e* ARemember 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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