恒力车削过程的模糊指数趋近律互补滑模控制  

FUZZY EXPONENTIAL REACHING LAW COMPLEMENTARY SLIDING-MODE CONTROL FOR CONSTANT FORCE TURNING PROCESS

作　　者：陈高华[1] 张嫣然 李悦 Chen Gaohua;Zhang Yanran;Li Yue(School of Electronic Information Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,Shanxi,China)

机构地区：[1]太原科技大学电子信息工程学院,山西太原030024

出　　处：《计算机应用与软件》2022年第8期82-87,共6页Computer Applications and Software

基　　金：山西省重点研发计划项目(201903D121137);山西省自然科学基金项目(201701D121056);山西省研究生创新项目(2018BY103);太原科技大学科研启动基金资助项目(20222026)。

摘　　要：恒力车削对于缩短加工时间、提高加工效率具有重要意义。针对车削过程中切削深度发生变化时的恒力控制问题,采用互补滑模控制方法削弱传统线性滑模控制器的抖振,并结合模糊控制策略在线实时整定指数趋近律互补滑模控制器的指数系数,提出恒力车削过程的模糊指数趋近律互补滑模控制方法。分别在车削过程切深突变和线性变化两种情况下与PID/PD复合控制方法、趋近律指数系数恒定的互补滑模控制方法及传统线性滑模控制方法进行了仿真比较。仿真结果表明,所提方法的超调、稳态误差和抖振幅度等性能指标均有所减小,且具有更强的鲁棒性,展现出对车削过程恒力控制的优越性以及对削弱传统线性滑模控制器输出抖振的有效性。Constant power turning is of great significance to shorten the processing time and improve the processing efficiency.Aiming at the problem of constant force control when the cutting depth changes in turning process,we used the complementary sliding mode control method to weaken the chattering of traditional linear sliding mode controller.Combined with the fuzzy control strategy,the index coefficient of the complementary sliding mode controller of the exponential reaching law was adjusted online and in real time,and we proposed the fuzzy exponential reaching law complementary sliding mode control method for the constant force turning process.The simulation was compared with the PID/PD control method,the complementary sliding mode control method with constant exponential coefficient of the approach law and the traditional linear sliding mode control method in the case of abrupt change of cutting depth and linear change in the turning process.The simulation results show that the overshoot,steady-state error and chattering amplitude of the proposed method are reduced,and this method has stronger robustness.It shows the superiority of turning process control and the effectiveness of reducing the output chattering of traditional linear sliding mode controller.

关 键 词：恒力车削 互补滑模控制 指数趋近律 模糊控制 参数整定 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术] TP29