Thrust anti-torque sensing actuator based on piezoelectric and flexoelectric materials

Abstract

The invention relates to a thrust anti-torque sensing actuator based on piezoelectric and flexoelectric materials, thereby solving problems of single function, complex measurement and easy damage of the actuator in the prior art. The thrust anti-torque sensing actuator has characteristics of multiple functions, good thrust anti-torque performance, sensitive sensing, simple measurement and high reliability and comprises an actuating body; a rhombic ring frame is arranged in the actuating body; a piezoelectric stack connected with a driver is installed between long shafts of the rhombus-shaped ring frame; piezoelectric fibers are pasted on the outer surface of a short shaft of the rhombus ring frame; a push rod and a spherical hinge connected with the push rod are installed on the head of the rhombus ring frame; a flexoelectric sensing layer is pasted on the conical surface of the push rod; and the flexoelectric sensing layer and the piezoelectric fibers are connected with measuring equipment.

Description

Technical field: [0001] The invention relates to a sensor actuator, in particular to a thrust and torsion sensor actuator based on piezoelectric and flexoelectric materials. Background technique: [0002] Applying an alternating electric field on a piezoelectric material crystal can cause mechanical deformation of the crystal. The actuator based on the piezoelectric stack has the advantages of high resolution, large output force, rapid response, and low power consumption. Piezoelectric coarse fiber composite material-MFC (Macro fiber composite) is a new type of piezoelectric ceramic material. Compared with traditional piezoelectric ceramics, MFC is softer, more durable, more reliable and easy to surface paste, and it is light in weight and thin in thickness. , has almost no effect on the quality and stiffness of the structure, and has high sensitivity and temperature adaptation range for the sensing measurement of flexible structures. The flexoelectric effect is an electric...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a thrust and torsional sensing actuator based on piezoelectric and flexoelectric materials, which overcomes the problems of single function, complex measurement and easy damage of the actuator in the prior art, and realizes the function Diverse, thrust and torsion resistance, sensitive sensing, simple measurement and high reliability functions

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