作者：王开，朱孔军，陈仁文
单位：南京航空航天大学，江苏南京 210016
中图分类号：U463.33
文献标识码：A
文章编号：1006-883X(2020)09-0021-06
收稿日期：2020-07-16
摘要：随着社会的进步，人们越来越关注乘车的舒适性，而汽车主动悬架对乘车舒适性至关重要。为了汽车悬架主动控制有更优秀的性能，特别关注了控制系统前端振动信号的采集。以汽车线性独立悬架作为研究的重点，建立简化汽车四分之一线性独立悬架的数学模型，用于研究汽车悬架振动信号的采集情况。根据汽车振动的频率特点以及人主观感受的振动强度，本文针对四分之一线性独立悬架，分析并建立有限频域H∞控制算法的数学模型。通过四分之一线性独立悬架模型的振动采集实验，分析得到信号。结果表明，汽车悬架振动信号采集系统采集到的信号可以稳定跟随激励信号，同时，发现低频振动信号容易掺杂高频扰动信号。
关键词：汽车振动；汽车悬架；振动采集；数学建模
Research on Vibration Signal Acquisition and Active Vibration Control Algorithm of Automotive Suspension
WANG Kai, ZHU Kong-jun, CHEN Ren-wen
Nanjing University of Aeronautics and Astronautics State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing 210016, China
Abstract: With the progress of society, people pay more and more attention to riding comfort, and active suspension is significant to ride comfort. In order to improve the performance of active control of automobile suspension, the vibration signal acquisition of the front end of the control system is particularly concerned. The mathematical model of simplified quarter linear independent suspension is established, focusing on the linear independent suspension which is one of the emphases for research, to study the vibration signal acquisition of vehicle suspension. Based on the frequency characteristics of vehicle vibration and the vibration intensity that people feel subjectively, the mathematical model of H∞ control algorithm in finite frequency domain is analyzed and established, aiming at linear independent suspension. The signal obtained through the vibration experiment of quarter independent suspension model is analyzed. The results show that the signal collected by the vehicle suspension vibration signal acquisition system can follow the excitation signal stably, and it is found that the low-frequency vibration signal is easily doped with high-frequency disturbance signal.
Key words: automobile vibration; automobile suspension; vibration acquisition; mathematical modeling
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备注：2020年 第26卷 第09期