利用非对称阻尼切换控制车体升降的车高求解研究

Abstract
Figure/Table
References (12)
Related Citation (1)

Download: PDF (870 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract The balance position of vehicle body vibration with asymmetric damping will change. Inspired by this phenomenon, an idea and method of controlling the asymmetric switching of adjustable damping of semi-active suspension and using the vibration of suspension piecewise linear nonlinear system to lift the vehicle body is proposed. This idea and method provides a new theory and method for vehicle height and attitude control under the conditions of high-speed steering and emergency avoidance. To implement this height control, it is necessary to determine the corresponding relationship between vehicle body lifting height and asymmetric damping, vehicle speed and road input under different driving conditions. According to the characteristic that the transmission rate of piecewise linear nonlinear system is independent of the external excitation amplitude, the sinusoidal sweep excitation is carried out under a damping asymmetric working condition. The nonlinear system is linearized and its transfer function is obtained. The power spectral density of vehicle body lifting height is obtained by using the solution method of linear system, and then its root mean square value is obtained. Under the working conditions of different vehicle speeds, road input and asymmetric damping, the system is linearized and its transfer function is obtained, and then the lifting height of the vehicle body under random or harmonic road excitation is obtained. The mathematical model of the lifting height of the vehicle body and relevant working conditions parameters is established by the method of optimal fitting. The simulation shows that the mathematical model has high accuracy.
Key words: Adjustable damping damper; vehicle body lifting height; piecewise linear system; linearization method; vibration utilization

Key words： Adjustable damping damper vehicle body lifting height piecewise linear system linearization method vibration utilization

Received: 01 November 2021 Published: 15 December 2022

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	CAI Chen1
	YAO Jialing1
	TIAN Songmei2

Cite this article:

CAI Chen1,YAO Jialing1,TIAN Songmei2. Solving vehicle height using asymmetric damping switching to control vehicle body lifting and lowering[J]. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(23): 36-42.

URL:

http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2022/V41/I23/36

[1] Zhu X, Jing X, Li C. Magnetorheological fluid dampers:A review on s-tructure design and analysis[J]. Journal of Intelligent Material Systems & Structures, 2012, 28(3): 839-873.
[2] Sun G, Fu X. Discontinuous dynamics of a class of oscillators with str-ongly nonlinear asymmetric damping under a periodic excitation[J]. C-ommunications in Nonlinearence & Numerical Simulation, 2018, 61(AUG.): 230-247.
[3] Brian Warner. An analytical and experimental investigation of high pe-rformance suspension dampers[D]. Concordia University. 1996.
[4] Rajalingham C, Rakheja S. Influence of suspension damper asymmetr-y on vehicle vibration response to ground excitation[J]. Journal of Sou-nd & Vibration, 2003, 266(5): 1117-1129.
[5] Balike K P, Rakheja S, Stiharu I. Influence of Suspension Kinematics and Damper Asymmetry on the Dynamic Responses of a Vehicle under Bump and Pothole Excitations [J]. SAE Paper, 2010, 1(2010):11-35.
[6] 张亮修,周静,成强,吴光强.考虑路面不平输入的车辆侧倾状态估计及主动控制[J].振动与冲击,2018,37(05):133-141+154.
[7] 姚嘉凌,王蒙,李智宏,et al. 基于主动悬架的车辆主动侧倾控制研究[J].机械强度,2018,40(03):534-539.
[8] Wang Jun. Shen Shuiwen. Integrated vehicle ride and roll control via active suspensions[J]. Vehicle System Dynamics, 2008, 46(sup1): 495-508.
[9] Jialing Yao, Meng Wang, Yanan Bai. Automobile active tilt based on active suspension with H∞ robust control [J]. Proceedings of the Instit-ution of Mechanical Engineers, P-art D: Journal of Automobile Engine-ering, 2021, 235(5): 1320–1329.
[10] Aleksander HaĆ. Optimal Linear Preview Control of Active Vehicle   Suspension [J]. Vehicle System Dynamics, 1992, 21(1): 167-195.
[11] Sireteanu T, D Stancioiu, Stammers C W . Experimental Assessment of a Semi-Active Suspension With Magnetor-heological Damper[C]. Manchesster: Proceedings of the 7-th Biennial Conference on Engineering Systems Design   and Analysis, 2004:879-884.
[12] Sireteanu T, Solomon. A Linearization Method of Piecewise Linear S-ystems Based on Frequency Domain Characteristics With Application to Semi-Active Control of Vibration[J]. Journal of vibration and acousti-cs: Transactions of   the ASME, 2018, 140(6):1-14.