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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,2 Q3 c" T  d3 }
  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.5 E/ T( x# T' J" p+ E- T
  Loads are processed by each operator for the following time:
% V  ]  H# ]. v2 @0 v$ ~# c  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.- i: T8 a5 H) F. q# M  I# G+ t
  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.3 G) K/ o+ ^( w  R+ p
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.( Z  S( y+ E% n2 l1 F# V& }( y& d
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:- N, f" Z) n* o
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 arriving4 g# h" u6 V3 [, [( S3 A
move into Q_wait /*Capacity is infinte*/
! p5 q5 ]1 v9 }1 A3 O6 n& Z* |" Fmove into Q_process /*Single capacity*/' I. X" o- }# [& V# _

# @- U2 k& U' ?2 I' guse R_A for n 60,10 min /*Resource A*/
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send to P_B
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$ L# A  I2 N# x- [' T4 C$ `P_B and P_C is similar
. W; o$ n+ _  }  {' htriangular 30,60,90 min: Y* R0 D4 m' K& D; X4 \6 s' @2 e
u 60,30 min5 n8 j# G) f  S2 ?$ b

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6 n" w! P( N2 s* Qin 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.4 X" i7 M$ W# G3 y$ q1 h# l

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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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