Look-ahead algorithm for velocity control based on parameterized curve interpolator

被引：1
|
作者：
Ren Kun [1 ]
Fu Jianzhong [1 ]
Chen Zichen [1 ]
机构：
[1] Zhejiang Univ, Coll Mech & Energy Engn, Hangzhou 310027, Peoples R China
来源：
CHINESE JOURNAL OF MECHANICAL ENGINEERING | 2008年 / 21卷 / 02期
关键词：
high speed cutting machining; parameterized curve interpolator; look-ahead algorithm;
D O I：
10.3901/CJME.2008.02.023
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
To avoid suffering gouge and transient overshooting in high speed cutting machining, a novel parameterized curve interpolator model with velocity look-ahead algorithm is proposed. Based on a prearrangement step interpolation algorithm for parameterized curves and considering high curvature points, parameterized curve tool path is divided into acceleration segments and deceleration segments by look-ahead algorithm. Under condition of characteristics of acceleration and deceleration stored in control system, deceleration before high curvature points and acceleration after high curvature points are realized in real-time in high speed cutting machining. Based on new parameterized curve interpolator model with velocity look-ahead algorithm, a real cubic spline is machined simulativly. The simulation results show that velocity look-ahead algorithm improves velocity changing more smoothly.
引用
收藏
页码：23 / 26
页数：4
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