基于魯棒H無窮濾波的步進(jìn)電機(jī)轉(zhuǎn)子狀態(tài)估計(jì) 

王超塵，楊濤 
南京理工大學(xué) 自動(dòng)化學(xué)院，江蘇 南京 210094 
 

摘 要：為有效控制步進(jìn)電機(jī)的運(yùn)行，根據(jù)H 無窮魯棒濾波理論，設(shè)計(jì)了基于擴(kuò)展H無窮濾波的步進(jìn)電機(jī)狀態(tài)觀測器，并建立數(shù)學(xué)模型，將定子電流、轉(zhuǎn)子轉(zhuǎn)速和位置作為狀態(tài)變量。通過測量定子側(cè)的電流值和電壓值，利用擴(kuò)展H 無窮濾波器對電機(jī)轉(zhuǎn)子的狀態(tài)做出最小方差估計(jì)。仿真結(jié)果表明，擴(kuò)展H無窮濾波估算轉(zhuǎn)子轉(zhuǎn)速和位置信息是可行的，且擴(kuò)展H無窮濾波精度和穩(wěn)定性都優(yōu)于擴(kuò)展卡爾曼濾波。
關(guān)鍵詞：步進(jìn)電機(jī)；擴(kuò)展H無窮濾波；轉(zhuǎn)子轉(zhuǎn)速；轉(zhuǎn)子位置；無傳感器
中圖分類號(hào)：TM383.6 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1007-3175(2014)02-0008-03

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

WANG Chao-chen, YANG Tao 
School of Automation, Nanjing University of Science and Technology, Nanjing 210094,China 
 

Abstract: In order to control the operation of step motor effectively, the state observer of step motor was designed based on H∞ robust filter 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∞ filter can get the minimum variance estimation of rotor state by measuring stator current and voltage, and lay the foundation for the sensorless motor control. The experimental results show that the H∞ filter can estimate rotor velocity and position, and filtering accuracy and stability are better than extended Kalman filtering.
         Key words: step motor; extended H∞ filter; rotor speed; rotor position; sensorless

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