TY - JOUR
T1 - Finite-Time Convergent Multiple Disturbance Rejection Control for Electromechanical Actuators
AU - Liu, Chunqiang
AU - Luo, Guangzhao
AU - Chen, Zhe
AU - Tu, Wencong
N1 - Publisher Copyright:
© 1986-2012 IEEE.
PY - 2021/6
Y1 - 2021/6
N2 - Electromechanical actuators (EMA) composed of permanent magnet synchronous motors are extensively employed in aircraft applications. However, several multisource disturbances in EMAs bring barriers to the high-dynamic position servo systems. Most of the existing disturbance rejection methods for EMAs converge exponentially and focus on a constant disturbance. However, practical disturbances, such as load torque, are high-order. To this end, this article puts forward a novel finite-time convergent nonlinear function, enhancing the dynamic tracking performance of the servo systems. Then a novel extended state observer (ESO) is proposed to improve the estimation accuracy of high-order disturbances. The integration of the composite controller and the ESO form the multiple disturbance rejection control method, which achieves error convergence in finite time. Finally, simulation and experimental results are provided to verify the effectiveness of the proposed method.
AB - Electromechanical actuators (EMA) composed of permanent magnet synchronous motors are extensively employed in aircraft applications. However, several multisource disturbances in EMAs bring barriers to the high-dynamic position servo systems. Most of the existing disturbance rejection methods for EMAs converge exponentially and focus on a constant disturbance. However, practical disturbances, such as load torque, are high-order. To this end, this article puts forward a novel finite-time convergent nonlinear function, enhancing the dynamic tracking performance of the servo systems. Then a novel extended state observer (ESO) is proposed to improve the estimation accuracy of high-order disturbances. The integration of the composite controller and the ESO form the multiple disturbance rejection control method, which achieves error convergence in finite time. Finally, simulation and experimental results are provided to verify the effectiveness of the proposed method.
KW - Disturbance rejection control
KW - extended state observer (ESO)
KW - permanent magnet synchronous motor
KW - servo system
UR - http://www.scopus.com/inward/record.url?scp=85096826125&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2020.3036410
DO - 10.1109/TPEL.2020.3036410
M3 - 文章
AN - SCOPUS:85096826125
SN - 0885-8993
VL - 36
SP - 6863
EP - 6878
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 6
M1 - 9250579
ER -