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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,+ e1 R. W, M. \  N: ?0 v
  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.: l: n: C9 }" {1 v+ a
  Loads are processed by each operator for the following time:0 W8 T0 z9 `! Z
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.6 e" Z" W" |1 s) C; G3 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.
& e- x) i* l5 q1 S9 h7 R  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
% p( F4 W: a! J; N0 `6 H& [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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( k# `1 Q! M* m8 X! D问题:2 Y3 K/ @2 Z; S8 b( J. [  d
After running the model for 10,000 days, what was the average number of loads in each process?+ a4 E7 y3 A( s( h

3 x: K% H* V! N6 a/ C8 P不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
: ^% F3 Y3 x$ a. \! J2 l) [/ Nmove into Q_wait /*Capacity is infinte*/! W  T- B) Q. l) x5 w" B2 z
move into Q_process /*Single capacity*/% k- Z" ]0 R2 k9 x& ^+ T+ s/ C3 T, @
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use R_A for n 60,10 min /*Resource A*/! Y0 q* Y6 V- H4 D$ N% o1 H

( g5 a1 P9 @; X) @send to P_B. v0 P  Q1 i) X+ o4 s; P
end
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( v% [4 O- y# ]9 W& \2 C+ VP_B and P_C is similar9 ]2 R& Y( B5 \& b$ d6 k. w
triangular 30,60,90 min$ h" n3 n/ r$ Z: R0 U- u, R
u 60,30 min7 {3 e( q# s  n. L

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in P_C, you need to send to die.& v/ D  O' v: I! _
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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.8 b' ?) Y2 Q9 s. y! k; Z2 G

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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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