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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,
: h& |1 P1 F* Z8 m  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.
% @2 G+ A# k, y- ^0 B  Loads are processed by each operator for the following time:; c6 ~- a# m# a
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
  }. p; X9 G; j9 s: \& Y; m  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 z7 i. U) k. t; p+ r5 M
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins." @* L5 @+ M0 ]* h. {2 z
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.. ]* c- o/ z+ t! c7 ~- p
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问题:
) R  g- f2 N6 _- f6 P8 Q+ KAfter 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, V6 h- ^: ^$ P# h' M# E, Z
move into Q_wait /*Capacity is infinte*/
) J9 ^& ^& k' d( Imove into Q_process /*Single capacity*/1 l  ^' f, L- d" j  ?
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
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! q% [4 K  T! r6 m/ a9 k3 wP_B and P_C is similar
  y& A( Q5 Q3 j0 Btriangular 30,60,90 min
7 V3 U4 r* ]  X/ du 60,30 min( Q8 S% r$ H* d; \

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+ d! Q+ k, V( n8 U6 i. Q6 j$ g: B; Min P_C, you need to send to die.
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1 @% r5 U8 x% z- G% V0 o2 x3 v( zThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.8 b( q5 M) h! M* i( g/ j# t

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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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