基于惯容的浮筏隔振系统人工自愈技术研究

doi:10.3901/JME.2023.18.013

机械工程学报 ›› 2023, Vol. 59 ›› Issue (18): 13-21.doi: 10.3901/JME.2023.18.013

• 特邀专栏：人工自愈与装备自主健康 • 上一篇下一篇

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基于惯容的浮筏隔振系统人工自愈技术研究

李月昊^1,2, 胡茑庆^1,2, 程哲^1,2, 尹正阳^1,2, 黄良远^1,2

1. 国防科技大学智能科学学院长沙 410073;
2. 国防科技大学装备综合保障技术重点实验室长沙 410073

收稿日期:2022-11-02 修回日期:2023-06-15 出版日期:2023-09-20 发布日期:2023-12-07
通讯作者: 胡茑庆(通信作者),男,1967年出生,博士,教授,博士研究生导师。主要研究方向为智能状态感知与故障诊断、振动控制、惯容及其应用。E-mail:hnq@nudt.edu.cn
作者简介:李月昊,男,1997年出生,博士研究生。主要研究方向为振动控制、惯容及其应用、智能状态感知与故障诊断。E-mail:liyuehao_nudt@163.com;程哲,男,1982年出生,博士,副教授,硕士研究生导师。主要研究方向为智能状态感知与故障诊断、振动控制、惯容及其应用。E-mail:chengzhenudt@163.com;尹正阳,男,1997年出生。主要研究方向为振动控制、智能状态感知与故障诊断。E-mail:919115315@qq.com;黄良远,男,1998年出生。主要研究方向为振动控制、智能状态感知与故障诊断。E-mail:1206213318@qq.com
基金资助:
国家自然科学基金资助项目(51775550,51975576)。

Artificial Self-recovery Technology of Floating Raft Vibration Isolation System Based on Inerter

LI Yuehao^1,2, HU Niaoqing^1,2, CHENG Zhe^1,2, YIN Zhengyang^1,2, HUANG Liangyuan^1,2

1. College of Intelligence Science and Technology, National University ofDefense Technology, Changsha 410073;
2. Laboratory of Science and Technology on Integrated Logistics Support, National University of Defense Technology, Changsha 410073

Received:2022-11-02 Revised:2023-06-15 Online:2023-09-20 Published:2023-12-07

摘要/Abstract

摘要： 传统浮筏隔振系统为双层“质量-弹簧-阻尼”机械系统。基于机电相似理论，质量与一端接地电容对应，而惯容是与电容完全对应的双端机械元件。将惯容引入浮筏隔振系统，使浮筏动力学模型中双层质量间可产生可变惯性耦合，从而极大影响系统固有频率与隔振性能。浮筏的退化或异动会改变系统固有频率和力传递率。惯容惯质系数的增加会使浮筏固有频率降低并影响力传递率。将人工自愈的思想引入浮筏隔振系统，根据系统固有频率的监测结果来调节惯容惯质系数，将系统固有频率自主调整恢复至合适固有频率，即为基于惯容的浮筏隔振系统人工自愈技术。为验证该技术原理，搭建浮筏隔振系统实验平台，进行简谐激励扫频试验。试验结果验证基于惯容的浮筏隔振系统人工自愈技术的可行性。

关键词: 浮筏, 隔振, 惯容, 滚珠丝杠惯容, 人工自愈

Abstract: The conventional floating raft vibration isolation system is a double-layer "Mass-Spring-Damper" mechanical system. Based on the analogy between mechanical and electric systems, mass corresponds to capacitor with one terminal connected to the earth, and inerter is a two-terminal mechanical element corresponding to capacitor. Inerter used in the floating raft, causes the variable inertial coupling between the two layers of mass in the floating raft's dynamic model. And it greatly influences the natural frequencies and vibration isolation performance of the floating raft. Degradation or change of floating raft can change the natural frequencies and force transmission rate of the system, while the increase of the inerter's inertance can reduce the natural frequencies and influence the force transmission rate. Introducing the idea of artificial self-recovery into the floating raft, adjusting the inerter's inertance according to the monitoring result of the natural frequencies, and self-adjusting the natural frequencies to a proper range. The process is called the artificial self-recovery technology of floating raft vibration isolation system based on inerter. To verify the technical principle, experimental platform is built, and the frequency sweep experiments under harmonic excitations are conducted. The experimental results verify the feasibility of the technology.

Key words: floating raft, vibration isolation, inerter, ball-screw inerter, artificial self-recovery

中图分类号:

TH113

李月昊, 胡茑庆, 程哲, 尹正阳, 黄良远. 基于惯容的浮筏隔振系统人工自愈技术研究[J]. 机械工程学报, 2023, 59(18): 13-21.

LI Yuehao, HU Niaoqing, CHENG Zhe, YIN Zhengyang, HUANG Liangyuan. Artificial Self-recovery Technology of Floating Raft Vibration Isolation System Based on Inerter[J]. Journal of Mechanical Engineering, 2023, 59(18): 13-21.

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基于惯容的浮筏隔振系统人工自愈技术研究

Artificial Self-recovery Technology of Floating Raft Vibration Isolation System Based on Inerter

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