Tandem piezoelectric directional driver

Abstract

The invention relates to a tandem piezoelectric directional driver, which comprises a first support leg, a second support leg, a tandem piezoelectric vibrator, a first foot bearing and a second foot bearing, wherein the tandem piezoelectric vibrator is in a cylinder structure which is formed by combining a plurality of round piezoelectric vibrators, a plurality of connection rings and a connecting pole; the first support leg and the second support leg are symmetrically pasted at two ends of the tandem piezoelectric vibrator; the first foot bearing and the second foot bearing are formed by compounding two materials with different friction coefficients and are arranged on the first support leg and the second support leg respectively; the tandem piezoelectric vibrator is electrified for telescopic deformation; and the materials with different friction coefficients on the two foot bearings are in contact with the working surface, so that the directional driving capability is generated; and the tandem piezoelectric directional driver is manly applied to the field of a bionic robot, detection and rescue and the like as a driver, and has the advantages of high driving capability, high environmental adaptability and the like.

Description

technical field [0001] The invention belongs to the field of piezoelectric driving, and in particular relates to a serial piezoelectric directional driver. Background technique [0002] With the development of science and technology, micro-drive technology occupies an increasingly important position in the fields of ultra-precision machinery and its manufacturing, precision measurement, detection and rescue, and biomedicine. New types of drives have been developed one after another. With the development of piezoelectric drive technology, the drive with piezoelectric ceramics as the core functional material stands out in the field of ultra-precision positioning drives. Piezoelectric ceramic drivers have the advantages of high energy density, fast response, high resolution, anti-electromagnetic interference, and low-temperature vacuum environment resistance. However, the existing piezoelectric micro-actuators are complex in structure and difficult to process. Due to the smal...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of poor driving ability and poor environmental adaptability of the current general micro-sized piezoelectric actuators, a serial piezoelectric directional actuator is proposed, which consists of a first support leg, a second support leg, a series piezoelectric vibrator, and a second support leg. One foot support and second foot support are formed. The series piezoelectric vibrator is energized to undergo expansion and contraction deformation, which drives the foot support to reciprocate. Due to the existence of friction, the materials with different friction coefficients on the two foot supports alternately contact with the working surface. Contact, when the foot support is reciprocating, the friction force is different and the sliding distance is also different, so the driving ability to the direction of the low friction coefficient material is formed.

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