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TECHNICAL PAPERS

A Comparative Study and Analysis of Semi-Active Vibration-Control Systems

[+] Author and Article Information
Nader Jalili

Robotics and Mechatronics Laboratory, Department of Mechanical Engineering, Clemson University, Clemson, SC 29634-0921e-mail: jalili@clemson.edu

J. Vib. Acoust 124(4), 593-605 (Sep 20, 2002) (13 pages) doi:10.1115/1.1500336 History: Received May 01, 2001; Revised April 01, 2002; Online September 20, 2002
Copyright © 2002 by ASME
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References

Figures

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Schematic of (a) force transmissibility for foundation isolation, (b) displacement transmissibility for protecting device from vibration of the base, and (c) application of vibration absorber for suppressing primary system vibration
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A typical primary structure equipped with three versions of vibration-control systems: (a) passive, (b) active, and (c) semi-active configuration
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Application of a semi-active absorber to SDOF primary system with adjustable stiffness ka and damping ca
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PCB series 712 PZT inertial actuator (left), schematic of operation (middle), and a simple SDOF mathematical model (right) (from 16)
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Frequency transfer functions (FTF) for nominal absorber (thin-solid); de-tuned absorber (thin-dashed); and re-tuned absorber (thick-solid) settings (from 15)
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Frequency response plot of transmissibility TA for the semi-active isolator as a function of variable damping ratio
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Frequency response plot of transmissibility TA for optimum semi-active suspension as a function of variable damping ratio
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A schematic configuration of an ER damper (from 19)
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A schematic configuration of an MR damper
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The application of a variable stiffness vibration absorber to a 4DOF building (from 44)
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A semi-active flutter control using adjustable pitching stiffness (from 45)
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A typical primary system equipped with the double-ended cantilever absorber with adjustable tuning ratio through moving masses m (from 46).
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Schematic of the adjustable effective inertia vibration absorber (from 47)
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Schematic of a cantilever beam with SA piezoelectric RL network (from 13)
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(a) A SQC model of vehicle suspension system (b) half car model incorporating the body pitch (from 58), and (c) whole car model with heave, pitch, and roll motions (from 58)
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Schematic design of the electro-hydraulic valve in the piston of a semi-active damper (from 57)
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Variations in frequency response of body velocity for SQC model with variable damper (from 17)
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Variation of normalized PI as a function of variable suspension damping ratio (from 10)
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A 2DOF vehicle model with dynamic vibration absorber
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On-off semi-active control decision
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Schematic of Skyhook damper arrangement
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Variations in frequency response of body velocity for SQC model with combination of variable damper and skyhook damping (from 17)

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