TY - JOUR
T1 - Strong-Robustness Sliding Mode Torque Observer With Frequency Adaptive Filter Integrated for PMSMs
AU - Sun, Junhang
AU - Wang, Yalin
AU - Cheng, He
AU - Gong, Chao
AU - Yi, Lizhi
AU - Liu, Chenliang
N1 - Publisher Copyright:
© 1986-2012 IEEE.
PY - 2025
Y1 - 2025
N2 - Accurate estimation of load torque is critical for optimizing the control performance of permanent-magnet synchronous motor (PMSM) drives. This article first establishes a mathematical model of the PMSM using coordinate transformation theory. Then, a nonsingular terminal sliding mode load torque observer (NTSMLO) is developed to precisely estimate load torque during motor operation, taking advantage of the nonsingular terminal sliding mode to achieve rapid response times and minimize chattering effects. However, traditional low-pass filters have problems with phase distortion and low roll-off rates, which limits their adaptability in dealing with external disturbances and time-varying parameters. To improve observation accuracy and enhance robustness, a frequency adaptive observer is integrated into the NTSMLO, forming the adaptive NTSMLO. Finally, the effectiveness of the proposed observer is validated through numerical simulations and experimental tests. Experimental results demonstrate significant improvements in both speed and parameter robustness over traditional sliding mode observers.
AB - Accurate estimation of load torque is critical for optimizing the control performance of permanent-magnet synchronous motor (PMSM) drives. This article first establishes a mathematical model of the PMSM using coordinate transformation theory. Then, a nonsingular terminal sliding mode load torque observer (NTSMLO) is developed to precisely estimate load torque during motor operation, taking advantage of the nonsingular terminal sliding mode to achieve rapid response times and minimize chattering effects. However, traditional low-pass filters have problems with phase distortion and low roll-off rates, which limits their adaptability in dealing with external disturbances and time-varying parameters. To improve observation accuracy and enhance robustness, a frequency adaptive observer is integrated into the NTSMLO, forming the adaptive NTSMLO. Finally, the effectiveness of the proposed observer is validated through numerical simulations and experimental tests. Experimental results demonstrate significant improvements in both speed and parameter robustness over traditional sliding mode observers.
KW - Frequency adaptive observer (FAO)
KW - load torque observer
KW - nonsingular terminal sliding mode
KW - permanent-magnet synchronous motor (PMSM)
UR - http://www.scopus.com/inward/record.url?scp=105002121596&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2025.3558261
DO - 10.1109/TPEL.2025.3558261
M3 - 文章
AN - SCOPUS:105002121596
SN - 0885-8993
VL - 40
SP - 11206
EP - 11217
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 8
ER -