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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,
' _1 N9 b. \  C# `! |$ @- c3 ~' W  r+ A  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.
* `" U. z" g( U3 w3 ~  Loads are processed by each operator for the following time:
8 ]5 p) _6 A8 x0 n  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.5 a! ~# f% E9 z# T, s  A1 E$ E
  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.
8 o7 K3 b8 }. ?0 Y  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.% r& J0 Z7 k& S$ S
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:, F( _! C! z( m, `+ l* F
After running the model for 10,000 days, what was the average number of loads in each process?2 G& p) t" a/ B. ~
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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
' k, \1 D6 c1 r- ]move into Q_wait /*Capacity is infinte*/- n( Z. Q* E7 E7 `' {4 R
move into Q_process /*Single capacity*/. W" w$ g8 Y# }8 O* }
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use R_A for n 60,10 min /*Resource A*/- c& s% Q) f$ G( h6 p2 B: Q
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send to P_B
/ X9 q5 X3 C; r: Q6 aend
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P_B and P_C is similar
: {' C0 Q( `+ @$ f3 r; ctriangular 30,60,90 min
! U- X+ O3 G% c; Ru 60,30 min
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in P_C, you need to send to die.+ T: H8 Y: H" i! Q% b

/ G. _6 h' S" ~; {6 F/ ^7 RThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.. r! V' Y, C1 W$ I
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9 |* b& E" i  X4 vRemember 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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