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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,
0 P  N  c$ t& Y; B% L( c  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.
; y; \% O: O3 E( v0 b! A) w  Loads are processed by each operator for the following time:% H6 C; i& {' m5 E/ s
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
. D1 w5 Q, \6 K- N/ e6 @  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.
4 n0 v3 h# N( z7 \  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
2 q5 R( Q! T5 h. c' x+ Y  TSend 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.( `9 w6 D- ^# h. @/ b

# D/ s% l# C( l  w+ H4 o问题:0 z5 P" H1 t6 I: {. y" N
After 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
8 |# c1 W; |. K  q  s) d  r1 O. O# Rmove into Q_wait /*Capacity is infinte*/* h) c; B# ~/ `
move into Q_process /*Single capacity*/; k- J; k2 P" m' z
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use R_A for n 60,10 min /*Resource A*/
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3 J9 N8 q& b% \send to P_B2 H% l2 g; d$ f! M. F+ M
end; O" n: G$ a: L# A

8 b1 f" u6 `/ W) q. k! d# ?* T. CP_B and P_C is similar* K3 i% O; R/ y8 H  W9 u
triangular 30,60,90 min; j, c, v3 J2 \6 u
u 60,30 min
8 I, ^8 n! \1 G
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' D- Q& f7 @1 H/ p2 O' |$ u' ein P_C, you need to send to die.
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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.8 `1 _2 H+ y5 Z0 d9 O

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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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