Damping force modeling and suppression of self-excited vibration due to magnetic fluids applied in the torque motor of a hydraulic servovalve

doi:10.3390/en10060749

	Damping force modeling and suppression of self-excited vibration due to magnetic fluids applied in the torque motor of a hydraulic servovalve
	Zhang, Wei 1,2; Peng, Jinghui 1,3; Li, Songjing 1
刊名	Energies
	2017-06-01
卷号	10 期号:6
关键词	Damping Iron oxides Magnetic fluids Magnetite Saturation magnetization Torque Viscosity Biomedical treatment Hydraulic control systems Hydraulic servo-valve Self excited Self-excited vibrations Servo-valve Vibration Vibration characteristics
ISSN号	1996-1073
DOI	10.3390/en10060749
英文摘要	As a key component of hydraulic control systems, hydraulic servovalves influence their performance significantly. Unpredictable self-excited noise inside hydraulic servovalves may cause instability and even failure. Being functional, with higher saturation magnetization and increased viscosity when exposed to a magnetic field, magnetic fluids (MFs) have been widely used in dampers, sealing, and biomedical treatment. In this paper, magnetic fluids are applied in the torque motor of a hydraulic servovalve to exert damping and resistance for vibration and noise suppression. Construction of the torque motor armature with magnetic fluids is introduced and the forces due to magnetic fluids on the torque motor armature are studied. Based on a bi-viscosity-constituted relationship, a mathematical model of the damping force from magnetic fluids is built when magnetic fluids are filled in the working gaps of the torque motor. Measurements of the properties of an Fe3O4 composite magnetic fluid are carried out to calculate the parameters of this mathematical model and to investigate the influence of magnetic fluids on the vibration characteristics of the armature assembly. The simulated and tested harmonic responses of the armature with and without magnetic fluids show the good suppression effects of magnetic fluids on the self-excited noise inside the servovalve. © 2017 by the authors. Licensee MDPI.
资助项目	National Natural Science Foundation of China[51675119]
WOS研究方向	Energy & Fuels
语种	英语
出版者	MDPI AG, Postfach, Basel, CH-4005, Switzerland
WOS记录号	WOS:000404384000015
状态	已发表
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114779]
专题	能源与动力工程学院外国语学院
通讯作者	Li, Songjing
作者单位	1.Harbin Inst Technol, Sch Mech Engn, Harbin 150001, Peoples R China 2.Lanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou 730000, Peoples R China 3.Hosei Univ, Dept Mech Engn, Tokyo 1028160, Japan
推荐引用方式 GB/T 7714	Zhang, Wei,Peng, Jinghui,Li, Songjing. Damping force modeling and suppression of self-excited vibration due to magnetic fluids applied in the torque motor of a hydraulic servovalve[J]. Energies,2017,10(6).
APA	Zhang, Wei,Peng, Jinghui,&Li, Songjing.(2017).Damping force modeling and suppression of self-excited vibration due to magnetic fluids applied in the torque motor of a hydraulic servovalve.Energies,10(6).
MLA	Zhang, Wei,et al."Damping force modeling and suppression of self-excited vibration due to magnetic fluids applied in the torque motor of a hydraulic servovalve".Energies 10.6(2017).