Longitudinal-bending compound single-foot two-degree-of-freedom ultrasonic motor vibrator

A technology of ultrasonic motors and degrees of freedom, applied in the direction of generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc., can solve problems such as difficult planar two-degree-of-freedom drives, and achieve a series of and commercialization, ease of serialization and commercialization, and the effect of overcoming the serious problem of fever
CN105406754BInactive Publication Date: 2017-11-17HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2017-11-17
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a longitudinal-flexural-combined single-foot two-degree-of-freedom ultrasonic motor vibrator, belonging to the technical field of piezoelectric ultrasonic motors, and solving the problem that an existing longitudinal-flexural-combined ultrasonic motor vibrator difficultly realizes planar two-degree-of-freedom drive. The longitudinal-flexural-combined single-foot two-degree-of-freedom ultrasonic motor vibrator comprises a middle beam, eight piezoelectric ceramic pieces and two rear end covers, wherein the eight piezoelectric ceramic pieces are all polarized along the thickness direction, in a direction from one rear end cover to the other rear end cover, the eight piezoelectric ceramic pieces are respectively a first piezoelectric ceramic piece to an eighth piezoelectric ceramic piece, the third, fourth, fifth and sixth piezoelectric ceramic pieces can be used for exciting the longitudinal vibration of the vibrator, and also can be used for exciting the flexural vibration of the vibrator in the horizontal direction, by controlling excitation signals applied to four longitudinal-flexural reuse electrode slices, switching between the two vibration modes can be conveniently realized, and thus drive output direction switching is realized. The longitudinal-flexural-combined single-foot two-degree-of-freedom ultrasonic motor vibrator is applied to the field of ultrasonic motor vibrator making.
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Description

technical field

[0001] The invention relates to a longitudinal bending composite single-leg two-degree-of-freedom ultrasonic motor vibrator, which belongs to the technical field of piezoelectric ultrasonic motors. Background technique

[0002] Piezoelectric ultrasonic motor is a kind of piezoelectric ultrasonic motor that uses the inverse piezoelectric effect of piezoelectric ceramics to excite vibration in the ultrasonic frequency range in the elastic body, and forms a particle motion with a specific trajectory at a specific point or area on the surface of the elastic body, and then passes through the stator, The frictional coupling between the rotors converts the microscopic motion of the particle into the macroscopic motion of the rotor. It has the advantages of simple structure, flexible design, low speed, high torque / thrust, high power / torque density, high positioning accuracy, fast response speed, and self-locking when power is off. , No electromagnetic interference an...

Claims

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