噪声与振动控制2018，Vol.38Issue(2)：11-17,7.DOI:10.3969/j.issn.1006-1355.2018.02.003
非线性隔振系统反馈控制动力学特性研究
Study on the Dynamic Characteristics of Nonlinear Vibration Isolation Systems with Feedback Control
摘要
Abstract
A 2-DOF controlling model is presented to study the dynamic characteristics of the nonlinear vibration isolation system (NVIS) with feedback control. The amplitude frequency equation of the system is derived, and the corresponding curve of the relationship between the amplitude and frequency is obtained.The influence of the feedback gain on the curve is researched,and the variation of the resonant peaks against the feedback gain is found.Results show that there are two resonant peaks in the amplitude-frequency curve, one is in the low frequency band and the other in higher frequency band.The resonant frequency shifts towards the left obviously and disappears gradually with the increasing of the feedback control gain. The Lyapnov exponent curve of the system is calculated to discover the chaotic and periodic parameter regions.The basic frequency response and super-harmonic response are observed in the experiment,and the linear spectrum is controlled effectively.This work is beneficial to the design of nonlinear vibration isolation control systems.关键词
振动与波/非线性隔振系统/共振频率转移/反馈控制/混沌吸引子/中高频曲线Key words
vibration and wave/nonlinear vibration isolation system/resonant frequency shift/feedback control/chaotic attractor/amplitude-frequency curve引用本文复制引用
刘树勇,位秀雷,王基,杨庆超..非线性隔振系统反馈控制动力学特性研究[J].噪声与振动控制,2018,38(2):11-17,7.基金项目
国家自然科学基金资助项目(51579242,51509253) （51579242,51509253）
