LOOK-AHEAD ALGORITHM FOR VELOCITY CONTROL BASED ON PARAMETERIZED CURVE INTERPOLATOR

作     者：REN Kun FU Jianzhong CHEN Zichen 

作者机构：College of Mechanical and Energy Engineering Zhejiang University Hangzhou 310027 China 

出 版 物：《Chinese Journal of Mechanical Engineering》 (中国机械工程学报（英文版）)

年 卷 期：2008年第21卷第2期

页      面：23-26页

核心收录：

学科分类：08[工学] 0802[工学-机械工程] 

基　　金：Special Project for Key Mechatronic Equipment of Zhejiang Province,China (No.2006Cl1067) Science & Technology Project of Zhejiang Province,China (No. 2005E10049) 

主　　题：High speed cutting machining Parameterized curve interpolator Look-ahead algorithm 

摘      要：To avoid suffering gouge and transient overshooting in high speed cutting machining, a novel parametefized 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.