振动
动力减振器
固有频率
刚度
转化(遗传学)
控制理论(社会学)
计算机科学
声学
结构工程
工程类
物理
人工智能
生物化学
化学
控制(管理)
基因
作者
Xiangying Guo,Yunan Zhu,Yegao Qu,Dongxing Cao
标识
DOI:10.1007/s10483-022-2905-6
摘要
Abstract An adaptive dynamic vibration absorber (ADVA) is designed for low-frequency vibration suppression. The leaf springs are applied as the tuning stiffness elements. The principle of variable stiffness is analyzed to obtain the effective range of the first natural frequency variation. A classic simply supported manipulator is selected as the controlled system. The coupled dynamic model of the manipulator-ADVA system is built to obtain the maximum damping efficiency and the vibration absorption capacity of the designed ADVA. An experimental platform is set up to verify the theoretical results. It is revealed that the ADVA can adjust the first natural frequency on a large scale by changing the curvature of the leaf springs. The amplitude of the manipulator is reduced obviously with the installation of the designed ADVA. Finally, based on the short-time Fourier transformation (STFT), a stepwise optimization algorithm is proposed to achieve a quick tuning of the natural frequency of the ADVA so that it can always coincide with the frequency of the prime structure. Through the above steps, the intelligent frequency tuning of the ADVA is realized with high vibration absorption performance in a wide frequency range.
科研通智能强力驱动
Strongly Powered by AbleSci AI