TY - GEN
T1 - A Hysteresis Compensation Control Method for Piezoelectric Actuators Based on Truncated Least Squares Support Vector Machine
AU - Ma, Zhibiao
AU - Liu, Xiangdong
AU - Mao, Xuefei
AU - Li, Zhen
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/8
Y1 - 2019/8
N2 - To overcome the low positioning accuracy of piezoelectric actuators (PEAs) caused by the hysteresis non-linearity, a hysteresis compensation control method based on truncated least squares support vector machine(T-LSSVM) is proposed. Firstly, for the low-robustness of least squares support vector machine(LS-SVM), a novel truncation strategy is proposed and a robust truncated least squares support vector machine(T-LSSVM) for hysteresis modeling is established. Then, based on T-LSSVM, the hysteresis inverse model is established to achieve real-time compensation for the hysteresis nonlinearity in PEAs. Finally, based on the hysteresis inverse compensation method, the feedforward-feedback hysteresis compensation control for PEAs is established. To test the proposed control method, the PID feedback control is introduced as comparisons. Experimental results show that the proposed control method is of higher accuracy and better generalization, realizing real-time high-precision tracking control of PEAs.
AB - To overcome the low positioning accuracy of piezoelectric actuators (PEAs) caused by the hysteresis non-linearity, a hysteresis compensation control method based on truncated least squares support vector machine(T-LSSVM) is proposed. Firstly, for the low-robustness of least squares support vector machine(LS-SVM), a novel truncation strategy is proposed and a robust truncated least squares support vector machine(T-LSSVM) for hysteresis modeling is established. Then, based on T-LSSVM, the hysteresis inverse model is established to achieve real-time compensation for the hysteresis nonlinearity in PEAs. Finally, based on the hysteresis inverse compensation method, the feedforward-feedback hysteresis compensation control for PEAs is established. To test the proposed control method, the PID feedback control is introduced as comparisons. Experimental results show that the proposed control method is of higher accuracy and better generalization, realizing real-time high-precision tracking control of PEAs.
KW - compensation control method
KW - hysteresis
KW - least squares support vector machine(LS-SVM)
KW - piezoelectric actuators (PEAs)
UR - http://www.scopus.com/inward/record.url?scp=85077111769&partnerID=8YFLogxK
U2 - 10.1109/ICEMS.2019.8922485
DO - 10.1109/ICEMS.2019.8922485
M3 - Conference contribution
AN - SCOPUS:85077111769
T3 - 2019 22nd International Conference on Electrical Machines and Systems, ICEMS 2019
BT - 2019 22nd International Conference on Electrical Machines and Systems, ICEMS 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 22nd International Conference on Electrical Machines and Systems, ICEMS 2019
Y2 - 11 August 2019 through 14 August 2019
ER -