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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,
5 x, @( |/ ?; r+ F) f' x  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.
# a" p2 {8 M% S4 b- N, R* U  Loads are processed by each operator for the following time:
8 [  Q3 k5 h8 ^  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.; P5 N* ~" O" N8 Q# ?: a
  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.# A5 [' x& I4 |4 {& h4 k
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.$ e6 B* x1 F& A* G5 s6 e. e
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.
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问题:
4 p+ o1 S  q7 J. t( n. ~After running the model for 10,000 days, what was the average number of loads in each process?
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- g7 h1 s- K8 ?$ ]不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
% K, H9 G: l: [move into Q_wait /*Capacity is infinte*/' x4 Y. v* D5 q# o
move into Q_process /*Single capacity*/  I* h1 ~) i' J9 o

  P* p+ `% H  c1 q3 [3 {0 y3 G$ j% juse R_A for n 60,10 min /*Resource A*/
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send to P_B
: G7 l' r% V% R# Aend
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: v2 ~  W# i/ c# _; w' C1 dP_B and P_C is similar7 U1 W3 E+ `- t0 Q# u+ I, R9 C. v
triangular 30,60,90 min+ _9 S; O+ p5 x. r3 ~
u 60,30 min
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in 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.0 d& A/ \: X+ }4 r$ t
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# i# |$ i8 N4 B+ \
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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