Paper Info
Title
High Torque Density Torque Motor with Hybrid Magnetization Pole Arrays for Jet Pipe Servo Valve
Abstract
Torque motor is one key component that directly influences the dynamic performance of jet pipe servo valve in aircraft. In this paper, a novel torque motor with hybrid-magnetization pole arrays is proposed. By changing the magnetization patterns of permanent magnets, the torque motor can significantly improve the output torque by range of 47–52% compared with traditional designs, while maintaining the system size and mass. The design concept and operating principle of the torque motor is presented. The magnetic field distribution is formulated analytically with equivalent magnetic circuit. Different from conventional study, the flux leakage of the permanent magnets and coils is included to improve the model precision. Subsequently, the output torque is derived mathematically from the airgap flux. Following that, the numerical calculation is conducted to validate the mathematical models of magnetic field and output torque. The design optimization is then carried out. One research prototype that can be mounted with either conventional magnet or the proposed hybrid array has been developed. The test rigs are constructed and experiments are conducted on the prototype. Both numerical computation and experimental results verify the significant improvement of torque generation of the proposed hybrid magnetization torque motor.
Year
DOI
Venue
2020
10.1109/tie.2019.2903761
IEEE Transactions on Industrial Electronics
Keywords
Field
DocType
Torque,Permanent magnet motors,Air gaps,Magnetic flux,Reluctance motors,Coils,Iron
Torque motor,Magnetic field,Torque,Control theory,Magnet,Air gap (plumbing),Magnetic flux,Engineering,Magnetic circuit,Electrohydraulic servo valve
Journal
Volume
Issue
ISSN
67
3
0278-0046
Citations 
PageRank 
References 
0
0.34
0
Authors
6
Name
Order
Citations
PageRank
Qiongfang Zhang100.34
Liang Yan25813.76
Zihao Duan300.34
Z. Jiao424224.74
Chris Gerada514839.69
I-Ming Chen656787.28