Double-stator coupling driving ultrasonic motor

By connecting, coupling and partitioning two piezoelectric ceramic sheets and directly driving the slide table, the problems of poor synchronization and energy loss of the stator vibration mode of existing ultrasonic motors are solved, and more efficient power output and energy density are achieved.

CN119696405APending Publication Date: 2025-03-25ANHUI JIANXING TECH CO LTD
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Patent Information

Application Number
CN202411808038.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-10
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

The existing bipedal independent ultrasonic motor produces a phase difference between the vibration displacement signal and the excitation signal between the stators, resulting in the inability to synchronize the vibration mode and affecting the output performance; at the same time, the composite form of cermet inevitably produces energy loss during driving, affecting working efficiency.

Method used

By connecting and coupling two piezoelectric ceramic sheets and partitioning them, the sliding table is directly driven by the piezoelectric ceramic sheet, the design of a dual-stator coupled drive ultrasonic motor is realized.

Benefits of technology

It reduces the use of metal components to conduct vibration or power, avoids energy loss, improves energy density and power output efficiency, and enhances the working efficiency of ultrasonic motors.

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Abstract

The invention discloses a double-stator coupling driving ultrasonic motor, and relates to the technical field of ultrasonic motors. The device comprises a stator, the stator comprises two piezoelectric ceramic pieces, and the two piezoelectric ceramic pieces are connected through a connecting piece; wherein one piezoelectric ceramic piece is connected with a first driving foot, and the surface of the piezoelectric ceramic piece is equally divided into a partition I and a partition II in the moving direction of the sliding table; one piezoelectric ceramic piece is connected with a first driving foot, the other piezoelectric ceramic piece is connected with a second driving foot, the surface of each piezoelectric ceramic piece is evenly divided into a third zone and a fourth zone in the moving direction of the sliding table, excitation signals are applied to the first zone or the second zone and the third zone or the fourth zone, and the sliding table is driven to generate displacement through the fact that the first driving foot and the second driving foot incline in the same direction. The two piezoelectric ceramic pieces are connected and coupled, the piezoelectric ceramic pieces are partitioned, the piezoelectric ceramic pieces are used for directly driving the sliding table, and the problems that an existing metal ceramic composite form is prone to generating energy loss, and the overall working efficiency of the ultrasonic motor is affected are solved.
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