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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,( s) x* |+ @4 }' l+ q5 P  H, ^. z
  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. G! |5 v6 C7 b  Loads are processed by each operator for the following time:7 Y2 q2 |5 ^, E9 J& s
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
* P+ C+ H2 _6 H! {$ }* Q+ h  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.1 s4 R9 J, o5 N( V  T# G, }- a
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
' S/ A; m5 J2 F3 a& d# E6 I4 [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' N: u* e  t4 ?$ y( V* A0 b. x问题:
1 {; u6 ?7 S) M* ~, j6 oAfter running the model for 10,000 days, what was the average number of loads in each process?0 u/ c# [# T, C: ^7 i  K

- ^* S' @- P0 ^' n不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving. N/ V6 V* Z" d$ q
move into Q_wait /*Capacity is infinte*/1 G3 E$ c, u* r0 d! e1 o! m
move into Q_process /*Single capacity*/8 ?6 [& M( [1 l( m& ?0 S

: ~6 b% y4 n6 W/ {/ guse R_A for n 60,10 min /*Resource A*/! R4 o9 d. s7 D( c6 B( c

; y: K1 @6 d" g2 Z* Y! Msend to P_B' B" s8 q1 Z  M! y% W; x
end
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P_B and P_C is similar
: u: w$ M1 d% V8 g4 ttriangular 30,60,90 min: P& ^2 ]" y% B4 [$ }  [
u 60,30 min+ `2 b0 P. ~7 ?2 t
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in P_C, you need to send to die.- d4 V9 |! a/ z: \  L" Y- q2 W$ ^" J
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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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8 t7 G7 s0 d. f# j  GRemember 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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