Article: Development of a torque motor with enhanced performance employing novel semi-inset PM pole Journal: International Journal of Hydromechatronics (IJHM) 2025 Vol.8 No.5 pp.40 - 54 Abstract: The key task of torque motors is to enhance the output torque. From an electromagnetic design perspective, the motor is required to have the largest possible air gap flux density and operating current. This can be achieved through several approaches: First, by using high-performance permanent magnets to increase the rotor magnetic flux. Second, by employing high-permeability soft magnetic materials to reduce magnetic reluctance. Third, through more rational structural design. Fourth, by designing efficient heat dissipation structures. Based on these approaches, a torque motor with enhanced performance employing novel semi-inset PM pole is proposed, the structure of the motor is introduced, the influence of the new semi-inset permanent magnet poles on the electromagnetic performance is analysed, the structural strength and temperature rise are checked, and finally a prototype is manufactured and its performance is verified. The design results have achieved the expected effect and meet the given operating conditions. Inderscience Publishers - linking academia, business and industry through research

Title: Development of a torque motor with enhanced performance employing novel semi-inset PM pole

Authors: Xinghua He; Pengjie Xiang; Zhihao Xu; Xiaocheng Wei; Yue Li

Addresses: School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China; Tianmushan Laboratory, Xixi Octagon City, Yuhang District, Hangzhou 310023, China; Science and Technology on Aircraft Control Laboratory, Beihang University, Beijing 100191, China ' School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China; Tianmushan Laboratory, Xixi Octagon City, Yuhang District, Hangzhou 310023, China; Science and Technology on Aircraft Control Laboratory, Beihang University, Beijing 100191, China ' School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China; Tianmushan Laboratory, Xixi Octagon City, Yuhang District, Hangzhou 310023, China; Science and Technology on Aircraft Control Laboratory, Beihang University, Beijing 100191, China ' Ningbo Institute of Technology, Beihang University, Ningbo 315800, China ' School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China

Abstract: The key task of torque motors is to enhance the output torque. From an electromagnetic design perspective, the motor is required to have the largest possible air gap flux density and operating current. This can be achieved through several approaches: First, by using high-performance permanent magnets to increase the rotor magnetic flux. Second, by employing high-permeability soft magnetic materials to reduce magnetic reluctance. Third, through more rational structural design. Fourth, by designing efficient heat dissipation structures. Based on these approaches, a torque motor with enhanced performance employing novel semi-inset PM pole is proposed, the structure of the motor is introduced, the influence of the new semi-inset permanent magnet poles on the electromagnetic performance is analysed, the structural strength and temperature rise are checked, and finally a prototype is manufactured and its performance is verified. The design results have achieved the expected effect and meet the given operating conditions.

Keywords: torque; magnetic pole pattern; electromagnetic field; permanent magnet machine; finite element simulation.

DOI: 10.1504/IJHM.2025.144973

International Journal of Hydromechatronics, 2025 Vol.8 No.5, pp.40 - 54

Received: 11 May 2024
Accepted: 10 Dec 2024
Published online: 14 Mar 2025 *

Title: Development of a torque motor with enhanced performance employing novel semi-inset PM pole

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