Longitudinal-bending compound peristaltic precision piezoelectric actuator and its excitation method

A piezoelectric driver, a sophisticated technology, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, generators/motors, etc. Positioning power output and large range of motion strokes to achieve the effect of unlimited motion stroke, good application prospects and high positioning accuracy
CN106953539BActive Publication Date: 2019-04-12HARBIN 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
2019-04-12

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Abstract

The invention discloses a longitudinal-bending composite peristaltic precision piezoelectric driver and an excitation method thereof, and relates to the technical field of piezoelectric driving. The invention aims to solve a problem that an existing piezoelectric driver cannot have the properties of rapid movement, nanometer-scale positioning, strong power output and large-range movement stroke. The longitudinal-bending composite peristaltic precision piezoelectric driver is characterized in that a ceramic group formed by a bending vibration ceramic group and a longitudinal vibration ceramic group is arranged on a rear clamping body, n rear clamping bodies are arranged on a fixed base in parallel or arranged on a base body along the circumferential direction of the base body, a front clamping body is arranged at the front surface of each ceramic group, and each front clamping body is contacted with a linear rotor or a rotary rotor through a driving foot; the longitudinal vibration ceramic groups perform telescopic deformation so as to control contact / separation of the corresponding driving feet and the rotor, the bending ceramic groups perform bending deformation so as to realize stepping driving for the rotor, and continuous driving is realized through coordinately setting the operating process of a plurality of energy converters. The longitudinal-bending composite peristaltic precision piezoelectric driver has the advantages of large stroke, high positioning precision, adjustable output speed and output power and the like, and has good application prospects in the fields such as intelligent robots, aviation and aerospace and high-end equipment manufacturing.
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Description

technical field

[0001] The invention relates to a longitudinal-bend compound peristaltic precision piezoelectric driver and an excitation method thereof. The utility model belongs to the field of piezoelectric drive technology. Background technique

[0002] The piezoelectric actuator mainly uses the inverse piezoelectric effect of piezoelectric materials to convert input electrical energy into output mechanical energy. It has the characteristics of simple and compact structure, no electromagnetic interference, fast response speed, and self-locking when power is off. It has been successfully applied in optical precision Instruments, aerospace, precision medical equipment and other fields are currently one of the more commonly used precision driving and micro-positioning methods.

[0003] According to different driving principles, current piezoelectric drivers are mainly divided into resonant piezoelectric drivers and non-resonant piezoelectric drivers. Among them, the reson...

Claims

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