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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 M2 c( S7 n% D" J% U  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.  M' k- Z+ Q2 _6 A; @
  Loads are processed by each operator for the following time:% I, ~7 w+ ^7 V* q* z% [
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
7 E# I/ E7 p' R7 m, J7 A8 u/ 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.! G/ M! G& e6 B# F; P3 [
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.; X3 Y, [" @8 K! w: N( m( ^5 E
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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- y+ p( v/ N+ w, K, w- N问题:$ j# M8 f- F! D- y/ }
After running the model for 10,000 days, what was the average number of loads in each process?% [7 L! }; m8 _7 Q9 ]+ O

$ T* L- y3 b2 {; _$ Q. X不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
% G( a9 a: t! q( _5 nmove into Q_wait /*Capacity is infinte*/
+ J1 `( J- ~0 v7 ~move into Q_process /*Single capacity*/
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$ ?# d7 [" _. D( g9 fuse R_A for n 60,10 min /*Resource A*/
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send to P_B
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P_B and P_C is similar3 V3 h  @" {& F0 ]* g# @& M
triangular 30,60,90 min7 N" J4 w0 J. ?8 m
u 60,30 min
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6 m* U" ?# x3 ]4 A$ L  d( S' U. Cin P_C, you need to send to die.0 }% I, z) }) k6 n( K# G. ~
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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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& F( ?5 Y  G0 J) S: jRemember 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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