基于自抗扰原理的电磁直线执行器电流换相技术  

Current Commutation Technology of Electromagnetic Linear Actuator Based on Active Disturbance Rejection Principle

作　　者：施昕昕[1] 常思勤[1] 

机构地区：[1]南京理工大学机械工程学院,江苏南京210094

出　　处：《南京理工大学学报》2011年第6期805-810,共6页Journal of Nanjing University of Science and Technology

基　　金：国家'863'计划资助项目(2006AA05Z236);江苏省科技支撑计划(BE2008133)

摘　　要：针对直线执行器的高速、高精度及行程模块化要求,在分析了自行研制的电磁直线执行器(EMLA)结构特点的基础上,提出了一种电流换相技术方案。推导出了EMLA的状态空间模型。采用自抗扰控制器进行电流换相控制,抑制系统运行过程中参数的不确定性以及摩擦等外部扰动。利用LuGre摩擦力模型进行仿真研究并和经典比例积分微分控制算法进行了对比。仿真和实验结果表明,该电流换相技术方案不影响运动平顺性,最大速度达3.1 m/s,验证了其有效性。To achieve modular stroke,high speed and high accuracy linear motion requirements of actuator,a current commutation technology scheme based on the analysis of structural features of the self-developed electromagnetic linear actuator（EMLA）is presented.A state-space model of EMLA is presented.The external disturbances acting on the motion system such as parameter uncertainties and frictions are reduced by current commutation control of active disturbance rejection controller.The LuGre friction model is used for simulation and comparison with conventional PID controller.Simulation and experimental results indicate that the current commutation scheme doesn ＇ t influence the motion smoothness and the maximal speed is 3.1 m/s,which verifies its effectiveness.

关 键 词：电磁直线执行器 电流换相 自抗扰控制 

分 类 号：TM359[电气工程—电机]