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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," i. F8 c$ _3 e8 ]& L& K$ Y
  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.7 B' K$ A8 |. ^  B
  Loads are processed by each operator for the following time:
( a% O- w# N( f, \" p7 r6 i  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.8 w! @6 o- N# q3 L8 W
  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.( w& r$ ]/ h8 B: ^! a
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.$ a) `" p7 z6 N4 x! 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.+ _1 {8 [9 R; a, D
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问题:
% Q4 Q" G0 m5 f7 Y6 d& WAfter 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
' E! q/ W- Y2 M" }; U/ ~/ rmove into Q_wait /*Capacity is infinte*/' K# l; o4 n6 K# ^2 F: {
move into Q_process /*Single capacity*/! _) Y- J  K+ n4 X% E6 h% Z: O; h

; [& M- M/ Z  a; A" guse R_A for n 60,10 min /*Resource A*/
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( a0 n% p# ]8 R) v: v# _5 jsend to P_B
3 o2 F9 [' Q+ z, @end
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P_B and P_C is similar" y2 w( ?+ C2 b
triangular 30,60,90 min  L; T' T" A. i. T4 V
u 60,30 min% y2 Z8 Q& |# w' M2 Z2 u* I

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in P_C, you need to send to die.8 X, l9 C+ G& f4 m! s, h9 ~
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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.# h: Y5 O9 v, ?5 A. K
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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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