NDLI: Variable Damping and Stiffness Vibration Control With Two Magnetorheological Fluid Dampers in Series

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Liu, Yanqing Matsuhisa, Hiroshi Utsuno, Hideo Park, Jeong Gyu
Copyright Year	2005
Abstract	Vibration isolation methods that vary damping and stiffness have demonstrated excellent authority over system vibration, thus, potentially making them attractive for many applications. However, conventional devices for controlling variable stiffness are typically complicated and difficult to implement in most applications. To address this issue, a new method is proposed that requires two magnetorheological (MR) fluid dampers placed in series. With this configuration, variable damping and stiffness vibration control is simultaneously achieved by varying a small current to the MR dampers. This paper presents a theoretical and experimental analysis of a two degree-of-freedom system that is controlled by the MR dampers. Five different control schemes involving the variable damping and stiffness are explored. The time and frequency responses of the two degree-of-freedom system to a random input show that combined variable damping and stiffness control provides the best vibration isolation over a frequency range spanning the system’s two structural vibration modes. The experimental results agree well with the theoretical analysis.
Sponsorship	Design Engineering Division and Computers and Information in Engineering Division
Starting Page	2309
Ending Page	2316
Page Count	8
File Format	PDF
ISBN	0791847381
DOI	10.1115/DETC2005-84675
e-ISBN	0791837661
Volume Number	Volume 1: 20th Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C
Conference Proceedings	ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
Language	English
Publisher Date	2005-09-24
Publisher Place	Long Beach, California, USA
Access Restriction	Subscribed
Subject Keyword	Variable stiffness Variable damping Mr fluid damper Vibration Semi-active control Damping Fluids Stiffness Vibration control Dampers
Content Type	Text
Resource Type	Article

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