线性自抗扰控制在快刀伺服控制中的应用  

Application of Linear Active Disturbance Rejection Control to Fast Tool Servo System

作　　者：李捷[1,2] 陈新[1] 陈新度[1] 

机构地区：[1]广东工业大学广东省微纳加工技术与装备重点实验室,广东广州510006 [2]广东金融学院计算机科学与技术系,广东广州510521

出　　处：《机械设计与制造》2014年第12期224-226,230,共4页Machinery Design & Manufacture

基　　金：广东省引进创新科研团队计划资助(201001G0104781202)

摘　　要：为了提高具有表面微结构的零件的超精密加工中快刀伺服系统的跟踪精度和抗干扰性,研制了一种线性自抗扰控制器。通过对快刀伺服刀架建模分析,得到惯性环节和二阶振荡环节串联的等效模型,设计出三阶四维的线性扩张状态观测器,可对未知扰动的观测结果作出实时估计和补偿,由此设计出线性自抗扰控制器。数字仿真实验表明,线性自抗扰控制具有良好的控制品质,其中,在快刀伺服系统中的应用可以提高跟踪性能和抗干扰性。In order to improve tracking accuracy and robustness of fast tool servo （ FTS ） system, in ultra-precision machining for the microstructured surface components, the linear active disturbance rejection control （LADRC） was introduced. By modeling and analyzing the FTS, it obtained the equivalent model of inertia and second oscillation links in series. A four- dimensional and the three-order linear extended state observer （LESO） was designed. It can make real-time observations to estimate and compensate for unknown disturbanees from all kinds ofsources, and then the LADRC controller was designed. Digital simulation results showed that LADRC has good controlling quality. Its application in fast tool servo system can improve the tracking performanee and robustness.

关 键 词：表面微结构 超精密加工 快刀伺服 线性自抗扰控制 

分 类 号：TH16[机械工程—机械制造及自动化] TP273[自动化与计算机技术—检测技术与自动化装置]