Title :
A decoupling control method of reluctance-type bearingless motors considering magnetic saturation
Author :
Michioka, Chikaxa ; Sakamoto, Tomokazu ; Ichikawa, Osamu ; Chiba, Akira ; Fukao, Tadashi
Author_Institution :
Dept. of Electr. & Electron. Eng., Tokyo Inst. of Technol., Japan
Abstract :
The interference of the torque component current of a motor with the radial position control of reluctance-type bearingless motors is investigated. In order to cancel this interference, a decoupling control method has been proposed. With this method, machine parameter identification of radial force production is very important. It is shown that the radial force constants exhibit significant variations in accordance with the torque component current due to magnetic saturation. The parameter tuning of the decoupling compensator taking into account the magnetic saturation is found to realize very stable operation in radial rotor position control
Keywords :
control system analysis; machine control; machine testing; parameter estimation; position control; reluctance motors; rotors; decoupling control method; machine parameter identification; magnetic saturation; radial force constants; radial force production; radial rotor position control; reluctance-type bearingless motors; torque component current; Equations; Force control; Gravity; Magnetic levitation; Magnetic variables control; Position control; Rotors; Saturation magnetization; Shape; Stator windings;
Journal_Title :
Industry Applications, IEEE Transactions on
