超磁致伸缩构件精密加工异形孔滑模控制

采用一组合趋近律的离散滑模控制方法,用于超磁致伸缩构件精密加工异形孔的高精度、实时微位移控制.该方法通过超磁致伸缩构件驱动模型与异形孔精密加工动力学分析,建立系统的状态方程,并通过微位移实时反馈解决切削干扰力不可测的问题.经微位移控制仿真和实验表明：超磁致伸缩材料(GMM)构件精密加工异形孔的微位移仿真误差在±0.8%以内,并具备快速趋近滑模面和抑制抖振的特点；微位移跟踪实验误差在±5%以内.

Non-cylinder holes precision machining by giant magnetostrictive components with sliding mode control

Applied a method of discrete sliding mode control with combination reaching law,to realize high precision of micro displacement and real-time control of non-cylinder holes precision machining by giant magnetostrictive components.In the first,a state equation of the sliding control mode was established by the driven model of giant magnetostrictive components and the dynamics analysis of non-cylinder holes precision machining.And solve the problem of unpredictable cutting interference by real-time feedback of micro-displacement.The simulation and experimental results show,the micro-displacement simulation error of non-cylinder holes precision machining by giant magnetostrictive components within ± 0.8%,and has the characteristics of fast approaching the sliding surface and inhibits of buffeting.And the experiments of micro-displacement tracking error within ± 5%.