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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 T3 ^( A+ c) m! Q; q
  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.
, n- }# K1 s9 @( \  Loads are processed by each operator for the following time:
% P2 `% R2 a' ?5 l  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.2 l3 g- G& a8 [( D
  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 E  G; B1 d/ Y. x. }  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
1 Y$ d, U3 P$ V( i6 dSend 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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- Y8 k' e# w" M问题:
8 p" u4 Y, s, }( }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
: M" r0 _8 X" O1 imove into Q_wait /*Capacity is infinte*/, L) r4 l* K0 F: n
move into Q_process /*Single capacity*/9 {. b+ O  R8 Y  J7 Q: ?5 R
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use R_A for n 60,10 min /*Resource A*/( |# i" Z& D' M6 X7 i2 g4 x. Y

8 U2 q" M. j3 u* d) ~send to P_B6 a3 I6 \) O. v4 X5 I& r
end; J& R1 ?' w- r6 }( p
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P_B and P_C is similar
7 Z2 M. Y1 q- v8 otriangular 30,60,90 min
4 I6 O4 ]# y3 _+ ?; S0 m/ I6 Z2 I. {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.
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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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