机译:Theoretical research on magnetization and demagnetization process of electrohydraulic servo valve with permanent magnet torque motor
Nanjing Univ Aeronaut & Astronaut, Natl Key Lab Sci & Technol Helicopter Transmiss, Nanjing 210016, Peoples R China;
Electrohydraulic servo valve; torque motor; magnetization; demagnetization; magnetic steel; finite element method;