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- Title
Non-Contact Multi-Degree-of-Freedom Motor based on Hybrid Electromagnetic-Piezoelectric Drive Mode.
- Authors
Zheng Li; Kaiwen Wang; Yuntong Li; Shuai Gao; Haibo Wang; Hexu Sun
- Abstract
A new non-contact ultrasonic motor consisting of a Langevin transducer, an electromagnetic device, and a spherical rotor is presented, and the designed motor is theoretically analysis and experimentally verified. The designed motor is driven by a mixture of near-field acoustic levitation and electromagnetism, and the electromagnetic platform is controlled by three stacked piezoelectric actuators to control the deflection direction, thus driving the spherical rotor to achieve the same angle of deflection and self-propagation. By exciting the Langevin transducer under the rotor, the high-frequency vibration of the stator disc causes the air between the stator disc and the rotor to be squeezed periodically, and when the air pressure in the gap is larger than the external atmospheric pressure, the levitation force generated by the stator is larger than the gravity of the rotor, thus levitating the rotor, and when the rotor deflects, it can still achieve stable levitation because of its special geometry. The proposed new motor is expected to be used in applications requiring high output torque and microdisplacement.
- Subjects
ULTRASONIC motors; PIEZOELECTRIC actuators; ELECTROMAGNETIC devices; AIR pressure; TRANSDUCERS; ATMOSPHERIC pressure; MAGNETIC bearings; ULTRASONIC transducers
- Publication
Electrotehnica, Electronica, Automatica, 2024, Vol 72, Issue 2, p22
- ISSN
1582-5175
- Publication type
Article
- DOI
10.46904/eea.23.72.2.1108003