Piezoelectric linear motor fused with shear piezoelectric actuator composite drive mode

A linear motor, driving mode technology, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc. , difficult and precise positioning and other problems, to overcome the effects of sub-micron and nano-precision positioning, simple structure and convenient preparation
CN104883090AActive Publication Date: 2015-09-02PEKING UNIV +1
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
PEKING UNIV
Publication Date
2015-09-02

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Abstract

The invention discloses a piezoelectric linear motor fused with a shear piezoelectric actuator composite drive mode and a preparation method thereof. The piezoelectric linear motor comprises a piezoelectric harmonic oscillation piezoelectric transducer, a shear piezoelectric actuator, a drive circuit, a slider, a friction head fixed to the shear piezoelectric actuator, and peripheral parts. The harmonic oscillation piezoelectric transducer and the shear piezoelectric actuator are tightly bonded together to form a composite piezoelectric drive stator. The friction head and the slider in a sliding assembly are in close contact. The harmonic oscillation piezoelectric transducer and the shear piezoelectric actuator are provided with an upper surface electrode and a lower surface electrode. The piezoelectric motor can be driven in a harmonic, direct-current or composite mode, can produce macroscopic continuous linear motion and sub-micron and nanometer motion, and can produce big driving force. The piezoelectric linear motor of the invention is simple in structure and convenient to make, and can be popularized and applied in the field of precision driving.
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Description

technical field

[0001] The invention relates to micro-nano precision drive technology for piezoelectric motors, in particular to a piezoelectric linear motor with a composite piezoelectric drive stator structure combined with a shear piezoelectric actuator and a micro-nano composite drive mode and a preparation method thereof. Background technique

[0002] The piezoelectric motor uses the inverse piezoelectric effect of the piezoelectric element and the ultrasonic vibration of the elastic body to convert the micro-amplitude harmonic vibration of the elastic body into the macroscopic rotation or linear motion of the moving body through the friction between the stator and the mover. Thereby pushing the load directly. Piezoelectric motors have the advantages of compact structure and small volume, and have been widely used. A piezoelectric motor mainly includes a resonant piezoelectric transducer and a sliding assembly. The piezoelectric transducer is called the stator, and th...

Claims

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