Abstract： |
The invention relates to a flexural vibration modality ultrasonic micro-motor based on the polyhedral piezoelectric pole or piezoelectric pipe, belonging to the field of ultrasonic application. The invention comprises a stator vibrated by actuating ultrasonic, a rotor for putting torque or an axis connecting rotor, and a pre-pressure unit for pressing rotor. Wherein, said stator is mainly formed by a piezoelectric ceramic component for actuating vibration and its matching blocks, which is characterized in that: said piezoelectric ceramic component for actuating flexural vibration is polyhedral piezoelectric pole or piezoelectric pipe, whose surfaces of external wall are plated with a plurality of external electrodes for polarization and actuating vibration. The inventive motor has a wide size to be processed, which improves the minimization of ultrasonic motor. And, when inputting the electrical signal, the rotator can rotate on the surface of stator. Said invention has wider application in the fields of biology, medical treatment, micro-mechanism, precision electronic mechanism and the national defence. |
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