高速嵌入式数控系统速度前瞻控制算法的研究

王耀庭; 张秋菊; 成津赛

doi:10.13433/j.cnki.1003-8728.2014.1218

高速嵌入式数控系统速度前瞻控制算法的研究

doi: 10.13433/j.cnki.1003-8728.2014.1218

1.
江南大学机械工程学院, 无锡 214122

详细信息

作者简介:
王耀庭(1988- ),硕士研究生,研究方向为数控技术和高速加工,sdrzwvt@126.cum。

通讯作者:
张秋菊,教授,博士生导师,zhangqiuj@jiangnan.edu.cn。

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- 文章访问数: 127
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- 被引次数: 0
出版历程
- 收稿日期: 2013-04-30
- 刊出日期: 2014-12-05

A Look-ahead Control Algorithm for High Speed Embedded Systems

1.
School of Mechanical Engineering, Jiangnan University, Wuxi 214122

摘要

摘要: 为了实现嵌入式数控系统对微小轨迹的高速加工,避免数控设备频繁加减速产生的冲击,提出了一种高速数控加工中根据小线段标志判别前瞻分界点,自动调整前瞻段数的加减速控制前瞻算法,有效简化了连接点衔接速度的计算方法.首先分析了相邻轨迹加工路径衔接速度限制条件,提出了小线段判别条件和自适应前瞻段数的确定方法,然后通过对样条曲线加工代码的30个轨迹点进行仿真实验,结果表明该算法显著缩短了加工时间,速度变化平稳.
- 嵌入式系统 /
- 前瞻控制技术 /
- 加减速控制 /
- 高速加工
Abstract: To realize high speed machining for the tiny track of embedded system,and to avoid the impact of the frequent changing of the federate,an adaptive algorithm for look-ahead velocity control is proposed in this paper.This algorithm can discriminate the look-ahead demarcation point by using the small line flag and automatically adjusting the number of look-ahead segments. The algorithm also predigests the convergence speed calculation method of the connection points. The restrictions of the adjacent tracks processing path speed is analyzed,and a method to determine the small line is also presented. Simulation experiment is conducted on the processing of 30 spline track points. The results show that this algorithm can significantly shorten the processing time and ensure the speed changing smoothly.
- acceleration/deceleration control /
- adaptive algorithms /
- embedded systems /
- look ahead algorithm

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参考文献(8)

[1]	王坷基于嵌人式的雕铣机数控系统的研究与开发[D] 北京:北京交通大学,2007 Wang K.The research and development of embedded CNC system based on engraving and milling machine[D] Beijing; Beijing Jiaotong University,2007(in Chinese)
[2]	张立先,孙瑞勇,李洪波,等数控插补中基于运动曲线的局部优化和基于前瞻控制的整体优化[J]系统科学与数学,2010,30(11),1548-1561 Zhang L X,Sun R Y,Li H B,et al.Local optimization based on kinematic。urve and global optimization base on look-ahead shceme in cnc interpolation[J]Journal of Systems Seience and Mathematical Seiences,2010,30 (11):1548-1561(in Chinese)
[3]	王海涛数控系统速度前瞻控制算法及其实现[D]南京:南京航空航天大学,2011 Wang H T.Research on the feedrate look-ahead algorithms in the CNC system and their applications[D] Nanjing; Nanjing University of Aeronautic、and Astronautic、,2011(in Chinese)
[4]	陈光黎,钟震宇,张严林,等嵌人式运动控制系统中前瞻控制技术的研究[J]现在制造工程,2012,(3);25-27 Chen G L,Zhong Z Y,Zhang Y L,et al.Research on look-ahead algorithm for embedded motion control system[J] Modern Manufactauring Engineering,2012,(3);25-27(in Chinese)
[5]	Wang L,Cao J F.A look-ahead and adaptive speed control algorithm for high-speed CNC equipment[J].Int J.Adv.Manuf Technol,2012,63 ; 705-717
[6]	Ridwan F,Xu X.Advanced CNC system with in-process feed-rate optimisation[J]Robotic、and Computer-Integrated Manufactauring,2012,29(3):12
[7]	何均,游有鹏,陈浩,等S型加减速的嵌套式前瞻快速算法[J]航空学报,2010,(4);842-851 He J,You Y P,Chen H,et al.A fast nested look -ahead algorithm with S-shape acceleration and deceleration[J] Actaa Aeronautica Et Astronautica Sinica,2010,(4):842-851(in Chinese)
[8]	孙铭娟空间曲线切线的-种求法[J]数学学习与研究,2011,(11)Sun M J.A method for space curve tangent[J].Shuxue Xuexi Yu Yanjiu,2011,(11)(in Chinese)