Abstract:
A proper sensing scheme for the bearingless motor (BM), which is designed for the detection of rotational angle position and translational radial displacements of the rot...Show MoreMetadata
Abstract:
A proper sensing scheme for the bearingless motor (BM), which is designed for the detection of rotational angle position and translational radial displacements of the rotor, is a vital component from the BM control system point of view. However, adopting independent angle and radial displacement sensing methods make a challenge to the integration of BM system. To further improve integration level of BM, a composite sensing scheme only using four Hall sensors to simultaneously detect the rotational angle position and translational radial displacements of the rotor for BM under levitating orthogonal coordinate system is proposed in this article, and the proposed composite sensing scheme is easy implementation with digital control by carrying out simple algebraic operation on four Hall signals. Meanwhile, for the problem of eccentricity of the solved levitation center position due to nonideal factors, such as assembly errors and inconsistent device characteristics, a compensation strategy based on the tracking of the minimum levitation current is proposed, and with the target of the minimum antieccentric levitation current, the levitation position of BM is dynamically adjusted in real-time in two dimensions, and the stable levitation at the optimal point (stator geometric center) is finally achieved. Detailed parameter selection principles of the proposed scheme are also given. Simulations and experiments are carried out on a 5000 rpm/150 W BM to verify the effectiveness and superiority of the proposed composite sensing scheme and levitation position eccentricity compensation scheme.
Published in: IEEE Transactions on Power Electronics ( Volume: 40, Issue: 8, August 2025)
Funding Agency:

Nanjing University of Aeronautics and Astronautics, Nanjing, China
Xucong Bao was born in Zhejiang, China, in 1997. He received the B.S. degree in electrical engineering and the Ph.D. degree in power electronics and electric motor drives from the Nanjing University of Aeronautics and Astronautics, Nanjing, China, in 2019 and 2024, respectively.
Since 2024, he has been with the College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, where he is currently a Po...Show More
Xucong Bao was born in Zhejiang, China, in 1997. He received the B.S. degree in electrical engineering and the Ph.D. degree in power electronics and electric motor drives from the Nanjing University of Aeronautics and Astronautics, Nanjing, China, in 2019 and 2024, respectively.
Since 2024, he has been with the College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, where he is currently a Po...View more

Nanjing University of Aeronautics and Astronautics, Nanjing, China
Xiaolin Wang was born in Sichuan, China, in 1976. He received the B.S. degree in electrical engineering and the Ph.D. degree in power electronics and electric motor drives from the Nanjing University of Aeronautics and Astronautics, Nanjing, China, in 1999 and 2004, respectively.
Since 2004, he has been with the Department of Electrical Engineering, College of Automation Engineering, Nanjing University of Aeronautics and A...Show More
Xiaolin Wang was born in Sichuan, China, in 1976. He received the B.S. degree in electrical engineering and the Ph.D. degree in power electronics and electric motor drives from the Nanjing University of Aeronautics and Astronautics, Nanjing, China, in 1999 and 2004, respectively.
Since 2004, he has been with the Department of Electrical Engineering, College of Automation Engineering, Nanjing University of Aeronautics and A...View more

Nanjing University of Aeronautics and Astronautics, Nanjing, China
Bin Jiang (Fellow, IEEE) received the Ph.D. degree in automatic control from Northeastern University, Shenyang, China, in 1995.
He had ever been a Postdoctoral Fellow, a Research Fellow, an Invited Professor, and a Visiting Professor in Singapore, France, USA, and Canada, respectively. He is currently a Chair Professor of Cheung Kong Scholar Program with the Ministry of Education and the President of Nanjing University of ...Show More
Bin Jiang (Fellow, IEEE) received the Ph.D. degree in automatic control from Northeastern University, Shenyang, China, in 1995.
He had ever been a Postdoctoral Fellow, a Research Fellow, an Invited Professor, and a Visiting Professor in Singapore, France, USA, and Canada, respectively. He is currently a Chair Professor of Cheung Kong Scholar Program with the Ministry of Education and the President of Nanjing University of ...View more

Nanjing University of Aeronautics and Astronautics, Nanjing, China
Tengrui Shi (Graduate Student Member, IEEE) was born in Jiangsu, China, in 1998. He received the B.S. and M.S. degrees in electrical engineering, in 2020 and 2023, respectively, from the Nanjing University of Aeronautics and Astronautics, Nanjing, China, where he is currently working toward the Ph.D. degree in electrical engineering.
His research interests include design, modeling, and control technology of bearingless mot...Show More
Tengrui Shi (Graduate Student Member, IEEE) was born in Jiangsu, China, in 1998. He received the B.S. and M.S. degrees in electrical engineering, in 2020 and 2023, respectively, from the Nanjing University of Aeronautics and Astronautics, Nanjing, China, where he is currently working toward the Ph.D. degree in electrical engineering.
His research interests include design, modeling, and control technology of bearingless mot...View more

Nanjing Vocational University of Industry Technology, Nanjing, China
Qiang Ding was born in Jiangsu, China, in 1981. He received the B.S. degree from the Nanjing Normal University, Nanjing, China, in 2003, and the M.S. and Ph.D. degrees from the Nanjing University of Aeronautics and Astronautics, Nanjing, China, in 2010 and 2017, respectively, all in electrical engineering.
He is currently with the Nanjing Vocational University of Industry Technology, Nanjing, China. His research interests ...Show More
Qiang Ding was born in Jiangsu, China, in 1981. He received the B.S. degree from the Nanjing Normal University, Nanjing, China, in 2003, and the M.S. and Ph.D. degrees from the Nanjing University of Aeronautics and Astronautics, Nanjing, China, in 2010 and 2017, respectively, all in electrical engineering.
He is currently with the Nanjing Vocational University of Industry Technology, Nanjing, China. His research interests ...View more

Nanjing University of Aeronautics and Astronautics, Nanjing, China
Xucong Bao was born in Zhejiang, China, in 1997. He received the B.S. degree in electrical engineering and the Ph.D. degree in power electronics and electric motor drives from the Nanjing University of Aeronautics and Astronautics, Nanjing, China, in 2019 and 2024, respectively.
Since 2024, he has been with the College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, where he is currently a Postdoctoral. His research interests include bearingless motor control technology, and high speed motor control technology.
Xucong Bao was born in Zhejiang, China, in 1997. He received the B.S. degree in electrical engineering and the Ph.D. degree in power electronics and electric motor drives from the Nanjing University of Aeronautics and Astronautics, Nanjing, China, in 2019 and 2024, respectively.
Since 2024, he has been with the College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, where he is currently a Postdoctoral. His research interests include bearingless motor control technology, and high speed motor control technology.View more

Nanjing University of Aeronautics and Astronautics, Nanjing, China
Xiaolin Wang was born in Sichuan, China, in 1976. He received the B.S. degree in electrical engineering and the Ph.D. degree in power electronics and electric motor drives from the Nanjing University of Aeronautics and Astronautics, Nanjing, China, in 1999 and 2004, respectively.
Since 2004, he has been with the Department of Electrical Engineering, College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, where he is currently a Professor with the Aero-Power Sci-Tech Center. His research interests include permanent-magnet machines, bearingless motors, high-speed electrical machines, drives, and controls.
Xiaolin Wang was born in Sichuan, China, in 1976. He received the B.S. degree in electrical engineering and the Ph.D. degree in power electronics and electric motor drives from the Nanjing University of Aeronautics and Astronautics, Nanjing, China, in 1999 and 2004, respectively.
Since 2004, he has been with the Department of Electrical Engineering, College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, where he is currently a Professor with the Aero-Power Sci-Tech Center. His research interests include permanent-magnet machines, bearingless motors, high-speed electrical machines, drives, and controls.View more

Nanjing University of Aeronautics and Astronautics, Nanjing, China
Bin Jiang (Fellow, IEEE) received the Ph.D. degree in automatic control from Northeastern University, Shenyang, China, in 1995.
He had ever been a Postdoctoral Fellow, a Research Fellow, an Invited Professor, and a Visiting Professor in Singapore, France, USA, and Canada, respectively. He is currently a Chair Professor of Cheung Kong Scholar Program with the Ministry of Education and the President of Nanjing University of Aeronautics and Astronautics, Nanjing, China. He has authored eight books in the related fields. His research interests include intelligent fault diagnosis and fault tolerant control and their applications to helicopters, satellites, and high-speed trains.
Bin Jiang (Fellow, IEEE) received the Ph.D. degree in automatic control from Northeastern University, Shenyang, China, in 1995.
He had ever been a Postdoctoral Fellow, a Research Fellow, an Invited Professor, and a Visiting Professor in Singapore, France, USA, and Canada, respectively. He is currently a Chair Professor of Cheung Kong Scholar Program with the Ministry of Education and the President of Nanjing University of Aeronautics and Astronautics, Nanjing, China. He has authored eight books in the related fields. His research interests include intelligent fault diagnosis and fault tolerant control and their applications to helicopters, satellites, and high-speed trains.View more

Nanjing University of Aeronautics and Astronautics, Nanjing, China
Tengrui Shi (Graduate Student Member, IEEE) was born in Jiangsu, China, in 1998. He received the B.S. and M.S. degrees in electrical engineering, in 2020 and 2023, respectively, from the Nanjing University of Aeronautics and Astronautics, Nanjing, China, where he is currently working toward the Ph.D. degree in electrical engineering.
His research interests include design, modeling, and control technology of bearingless motor and permanent magnet motors.
Tengrui Shi (Graduate Student Member, IEEE) was born in Jiangsu, China, in 1998. He received the B.S. and M.S. degrees in electrical engineering, in 2020 and 2023, respectively, from the Nanjing University of Aeronautics and Astronautics, Nanjing, China, where he is currently working toward the Ph.D. degree in electrical engineering.
His research interests include design, modeling, and control technology of bearingless motor and permanent magnet motors.View more

Nanjing Vocational University of Industry Technology, Nanjing, China
Qiang Ding was born in Jiangsu, China, in 1981. He received the B.S. degree from the Nanjing Normal University, Nanjing, China, in 2003, and the M.S. and Ph.D. degrees from the Nanjing University of Aeronautics and Astronautics, Nanjing, China, in 2010 and 2017, respectively, all in electrical engineering.
He is currently with the Nanjing Vocational University of Industry Technology, Nanjing, China. His research interests include design and control of bearingless permanent magnet machines.
Qiang Ding was born in Jiangsu, China, in 1981. He received the B.S. degree from the Nanjing Normal University, Nanjing, China, in 2003, and the M.S. and Ph.D. degrees from the Nanjing University of Aeronautics and Astronautics, Nanjing, China, in 2010 and 2017, respectively, all in electrical engineering.
He is currently with the Nanjing Vocational University of Industry Technology, Nanjing, China. His research interests include design and control of bearingless permanent magnet machines.View more