A ball-cage structure piezoelectric actuator for 2-DOF pointing mechanism
Year: 2025
Type: conference-paper
Abstract: The pointing mechanism is a very common mechanical device and has a wide applications in the aerospace field. Most of the traditional pointing mechanisms are driven by electromagnetic motors and hydraulics, which make it difficult to meet the demands of high precision and customization. In this paper, a ball-cage structure piezoelectric actuator is proposed for the spherical 2-DOF pointing mechanism, which to switch the direction of the degrees of freedom by changing the excitation mode. Through the machining of the prototype and experimental analysis, the prototype can reach a speed of 533 deg/s and has a resolution of 42 μrad, which can meet the demand of high-precision application of pointing mechanism.
Authors: Zhiyao Bian, Jiaqi Wei, Xinpeng Chen, Xiangyu Ding, Xiaoniu Li, Dawei Wu
Institution: Nanjing University of Aeronautics and Astronautics
Language: English
Subfield: Control and Systems Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4409548179