NDLI: Two semi-active approaches for vibration isolation: piezoelectric friction damper and magnetorheological damper

Content Provider	IEEE Xplore Digital Library
Author	Unsal, M. Niezrecki, C. Crane III, C.
Copyright Year	2004
Description	Author affiliation: Dept. of Mech. & Aerosp. Eng., Florida Univ., Gainesville, FL, USA (Unsal, M.; Niezrecki, C.; Crane, C., III)
Abstract	Two different approaches to perform vibration isolation control on a single-degree-of-freedom system using semiactive dampers are investigated. In the first approach, the friction damper consists of an actuator, which is based on a piezoelectric stack with a mechanical amplifying mechanism that provides symmetric forces within the isolator. The advantages of such an actuator are its high bandwidth, displacement response and its ability to operate in vacuum environments such as in space. The damper is constrained to move using an air bearing that produces a virtually ideal single-degree-of-freedom spring-mass system. Within this work, the actuating ability of the friction-based actuator is characterized. The relationship between the force generated by the actuator and the applied voltage was found to be linear. In the second approach, a magnetorheological (MR) fluid damper is designed and fabricated. This damper is ideal for use in a semi-active control system where the damping characteristics can be adjusted by varying the amount of current applied to the damper.
Starting Page	60
Ending Page	65
File Size	431639
Page Count	6
File Format	PDF
ISBN	0780385993
DOI	10.1109/ICMECH.2004.1364413
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-06-05
Publisher Place	Turkey
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Shock absorbers Damping Friction Control systems Vibration control Piezoelectric actuators Isolators Bandwidth Hydraulic actuators Voltage
Content Type	Text
Resource Type	Article

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