关键词: 超声电机, 压电换能器, 组合式

Abstract:

An excitation method of longitudinal mode and longitudinal-bending vibration mode of bar-shape sandwich type ultrasonic transducer with d₃₃ mode were introduced, meanwhile,the application and driving mechanism of combined transducers was analyzed. A new ultrasonic motor composed of parallel transducers was proposed. The excitation method was designed. The function of two rotors driven by two feet of one motor was realized, which enriched the driving characteristic of ultrasonic motor and expand its application area.

Key words: ultrasonic motor, piezoelectric transducer, combined type