基于频率响应分析和非线性控制的半主动自适应气动隔振器

IF 2.3 3区工程技术 Q2 ACOUSTICS

Journal of Vibration and Control Pub Date : 2024-08-21 DOI:10.1177/10775463241269789

Shaofeng Xu, Zhibo Sun, Yixuan Wang, Jifan Wu, Yan Shi

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引用次数: 0

摘要

本研究针对新型橡胶气动隔振器（PVI）系统提出了一种基于模糊状态观测器的自适应非线性误差反馈控制器。首先，设计并开发了一种新型橡胶气动隔振器系统。应用谐波平衡法建立了 PVI 系统的动态模型，从而分析了系统的频率响应特性。其次，为了改善 PVI 在低频振动中的性能，为主动 PVI 系统设计了基于模糊状态观测器的非线性状态误差反馈控制系统。此外，还建立了实验系统。最后，通过在 5 Hz、7 Hz、20 Hz 和 40 Hz 下的实验对比，提出了一种自适应 PVI 策略。实验结果表明，自适应 PVI 具有更好的隔振性能。

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A semi-active adaptive pneumatic vibration isolator based on frequency response analysis and nonlinear control

In this work, an adaptive nonlinear error feedback controller based on fuzzy state observer is proposed to a novel rubber pneumatic vibration isolator (PVI) system. First, a novel rubber PVI system is designed and developed. Harmonic balance method is applied to establish the dynamic model of the PVI system, so as to analyze the frequency response characteristics of the system. Second, to improve the PVI performance in low-frequency vibration, a nonlinear state error feedback control system based on fuzzy state observer is designed for the active PVI system. Furthermore, the experiment system is established. Finally, through the experimental comparison under 5 Hz, 7 Hz, 20 Hz, and 40 Hz, an adaptive PVI strategy is proposed. The experimental results demonstrate that the adaptive PVI shows better performance in vibration isolation.

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来源期刊

Journal of Vibration and Control 工程技术-工程：机械

CiteScore

5.20

自引率

17.90%

发文量

336

审稿时长

6 months

期刊介绍： The Journal of Vibration and Control is a peer-reviewed journal of analytical, computational and experimental studies of vibration phenomena and their control. The scope encompasses all linear and nonlinear vibration phenomena and covers topics such as: vibration and control of structures and machinery, signal analysis, aeroelasticity, neural networks, structural control and acoustics, noise and noise control, waves in solids and fluids and shock waves.