Abstract
An ultrasonic motor as a kind of smart material drive actuator has potential in robots, aerocraft, medical operations, etc. The size of the ultrasonic motor and complex circuit limits the further application of ultrasonic motors. In this paper, a single-phase driven ultrasonic motor using Bending-Bending vibrations is proposed, which has advantages in structure miniaturization and circuit simplification. Hybrid bending vibration modes were used, which were excited by only single-phase voltage. The working principle based on an oblique line trajectory is illustrated. The working bending vibration modes and resonance frequencies of the bending vibration modes were calculated by the finite element method to verify the feasibility of the proposed ultrasonic motor. Additionally, the output performance was evaluated by experiment. This paper provides a single-phase driven ultrasonic motor using Bending-Bending vibrations, which has advantages in structure miniaturization and circuit simplification.
Highlights
Bending-Bending vibrations is proposed, which has advantages in structure miniaturization and circuit simplification
A single-phase-driven ultrasonic motor using Bending-Bending vibrations was probration modes is feasible, which can output rotary motion if the linear guide rail is posed in this paper
Orthogonal bending vibration modes were only has the merit of easy miniaturization, and a simple and easytrajectory miniaturization excited simultaneously by only single-phase voltage, thushas an oblique line driving
Summary
Bending-Bending vibrations is proposed, which has advantages in structure miniaturization and circuit simplification. There is no need for frequency degeneracy of Bendingof the single-phase-driven ultrasonic motor. Only single-phase excitation voltage is needed, which is beneficial to reduce the power cost, simplify the circuit, and miniaturize the whole ultrasonic motor.
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