摘要
为了提高离散小线段的加工效率和质量,提出一种实时柔性加减速控制算法。该算法由三部分组成:前瞻处理部分利用加减速可行性判断条件,保证加减速可达和实时前瞻;速度规划部分在保证速度和加速度连续变化的条件下,实时计算下一插补周期的进给速度;动态修调部分对当前速度规划结果进行调整,及时响应加工中机床参数的改变。实验结果表明,该算法能够实现数控系统的实时柔性加减速控制,支持动态修调,满足实际加工的要求。
To improve high-speed and high-quality machining of continuous line segments,a novel real-time flexible acceleration and deceleration control algorithm was proposed.This algorithm contained three parts:the acceleration-deceleration feasibility and real-time forward-looking function were guaranteed in look-ahead processes with acc-dec feasibility conditions;the velocity planning module calculated next feedrate with smooth velocity and acceleration curves;in order to respond to changes of machining parameters immediately,adjusting current velocity planning results was carried out in dynamic override module.The experimental results reveal that the proposed algorithm may realize real-time flexible acceleration/deceleration control,support dynamic override and implement high-quality processing.
作者
李浩
吴文江
韩文业
郭安
LI Hao;WU Wenjiang;HAN Wenye;GUO An(University of Chinese Academy of Sciences,Beijing,100049;National Engineering Research Center for High-end CNC,Shenyang Institute of Computing Technology,Chinese Academy of Sciences,Shenyang,110168;Shenyang Golding NC Intelligent Tech.Co.,Ltd.,Shenyang,110168)
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2019年第6期690-699,共10页
China Mechanical Engineering
基金
国家科技重大专项(2017ZX04011004)
关键词
自适应前瞻
预测校正
柔性加减速控制
动态修调
adaptive look-ahead
predictor-corrector
flexible acceleration and deceleration control
dynamic override
