基于鲁棒H无穷滤波的步进电机转子状态估计  

Rotor State Estimation of Step Motor Based on Robust H_∞ Filter

作　　者：王超尘[1] 杨涛[1] 

机构地区：[1]南京理工大学自动化学院,江苏南京210094

出　　处：《电工电气》2014年第2期8-10,25,共4页Electrotechnics Electric

基　　金：高等学校博士学科点专项科研基金项目(200802881017);南京理工大学自主科研专项计划资助项目(2010ZYTS051)

摘　　要：为有效控制步进电机的运行,根据H无穷鲁棒滤波理论,设计了基于扩展H无穷滤波的步进电机状态观测器,并建立数学模型,将定子电流、转子转速和位置作为状态变量。通过测量定子侧的电流值和电压值,利用扩展H无穷滤波器对电机转子的状态做出最小方差估计。仿真结果表明,扩展H无穷滤波估算转子转速和位置信息是可行的,且扩展H无穷滤波精度和稳定性都优于扩展卡尔曼滤波。In order to control the operation of step motor effectively, the state observer of step motor was designed based on H∞robust iflter theory. The mathematical model of step motor was established and the stator current, rotor speed and rotor position were regarded as state vector. The H∞iflter can get the minimum variance estimation of rotor state by measuring stator current and voltage, and lay the foundation for the sen-sorless motor control. The experimental results show that the H∞iflter can estimate rotor velocity and position, and ifltering accuracy and stability are better than extended Kalman ifltering.

关 键 词：步进电机 扩展H无穷滤波 转子转速 转子位置 无传感器 

分 类 号：TM383.6[电气工程—电机]