Design and Locomotion Study of Stick-Slip Piezoelectric Actuator Using Two-Stage Flexible Hinge Structure

Abstract

A novel piezoelectric actuator using a two-stage flexure hinge structure is proposed in this paper, which is used in a compact and high-precision electromechanical field. The two-stage flexure hinge structure is used to provide horizontal thrust and vertical clamping force to the driving feet, which solves the problems of unstable clamping force and insufficient load capacity in traditional stick-slip piezoelectric actuators. Firstly, the main structure of the driver and the working process under the triangular wave excitation voltage are briefly introduced. Secondly, after many simulation tests, the structure of the actuator is optimized and the stability of the structure in providing clamping force is verified. Finally, through the research of the operating performance, when the amplitude is 150 V and the frequency is 3.25 kHz as the excitation source, the maximum speed can reach 338 mm/s and can bear about 3 kg load. It can be seen from the analysis that the two-stage flexure hinge structure can improve the displacement trajectory.

Development status of low temperature infrared detection technology

“…It depends on the small angular deformation of the material, under torsional load around the center of rotation in a limited Angle of the special motion pair. The flexible hinge has the advantages of no empty back, no friction, no gap, no noise, no wear, high motion sensitivity, easy control and stable operation 38 .…”

A new stick-slip type piezoelectric actuator based on asymmetric diamond-shaped flexure hinge structure

“…Inertial-type actuators are further divided into inertial impact and stick-slip drive types (Wang et al, 2021). The actuator based on the stick-slip drive principle is widely used in ultra-precision machining, microelectronics manufacturing, aerospace, and other fields because of its advantages of no electromagnetic interference, high precision and simple structure (Hu et al, 2020; Li et al, 2021; Tian et al, 2022). The power source of piezoelectric stick-slip drive technology is friction (Deng et al, 2023).…”

Theoretical Modeling and Experimental Verification of Elliptical Hyperbolic Hybrid Flexure Hinges

“…Compared to traditional stiff connectors, flexure hinges have the advantages of being frictionless, lubrication-free, compact structure, and capable of meeting diversified motion requirements [1,2]. They are widely used in areas requiring high precision, such as fast steering mirror support structures [3,4], piezoelectric ceramic actuators [5], translational micropositioning platforms [6,7], and robot joint connections [8].…”