电工技术学报2018，Vol.33Issue(3)：642-651,10.DOI:10.19595/j.cnki.1000-6753.tces.161675
激光切割永磁直线伺服系统的反演滑模控制
Back-Stepping Sliding Mode Control of Laser Cutting Permanent Magnet Linear Servo Control System
摘要
Abstract
In this paper,a back-stepping sliding mode control strategy is adopted for laser cutting servo control system driven by permanent magnet linear synchronous motors(PMLSM),where it is used to break the control system into subsystems for improved control.In order to improve precision,strengthen robustness and decrease chattering in the control system,the position and current loops are independently designed by using sliding mode control methods.In the position loop,the friction and disturbance of the low-speed-motion servo system are considered,a dual observer is designed to estimate the unmeasured state and parameters of LuGre friction model,and an adaptive exponential reaching law sliding controller is proposed for friction and disturbance feedforward compensation.In current loop,the chattering-free terminal sliding mode controller is designed.The global stability and global finite time convergence performance has been proved by Lyapunvo function.Finally,in order to observe the servo tracking performance of position and velocity,the three-close-loop PID control method and the proposed method have been comparatively tested on the laser cutting permanent-magnet-linear servo bench.The experimental results show that the proposed control method can effectively improve the control performance of the laser cutting servo system.关键词
永磁直线伺服/反演滑模/指数趋近律/无抖振终端滑模/跟踪性能Key words
Permanent magnet linear servo/back-stepping sliding mode/exponential reaching law/chattering free terminal sliding/tracking performance分类
信息技术与安全科学引用本文复制引用
张博,齐蓉,林辉..激光切割永磁直线伺服系统的反演滑模控制[J].电工技术学报,2018,33(3):642-651,10.基金项目
国家自然科学基金(51407143)、高等学校博士学科点专项科研基金(20136102120049)、陕西省自然科学基础研究计划(2014JQ7264)、陕西省微特电机及驱动技术重点实验室开放基金(2013SSJ10022)和中央高校基本科研业务费专项资金(3102014JCQ01066)资助项目. （51407143）
