Results 201 to 210 of about 20,095 (267)

Hybrid Time-Frequency Analysis for Micromobility-Based Indirect Bridge Health Monitoring. [PDF]

Sensors (Basel)
Singh P, Agarwal H, Sadhu A.
europepmc   +1 more source

Selectively damping materials for next-generation motion-artifact-free skin-interfaced soft bioelectronics.

Mater Horiz
Chen Z, Zhang F, Qian X, Zhao G, Yan Z.
europepmc   +1 more source

The advancement of Brillouin Light Scattering with the assistance of nanoplasmonic structures. Enhancement and amplification

Bortchagovsky E, Chumak A, Lozovski V.
europepmc   +1 more source

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Quasi-Active Damping

Volume 1: 22nd Biennial Conference on Mechanical Vibration and Noise, Parts A and B, 2009
This article introduces a new method of system design using semi-active dampers named quasi-active damping. This technique is the design of dynamical systems and controllers using multiple semi-active dampers such that, at any instant, the desired control force can always be achieved using a combination of the dampers.
Potter, J, Neild, SA, Wagg, DJ
openaire   +1 more source

Active Twist Blades: Electromechanical Damping

Volume 2: Mechanics and Behavior of Active Materials; Integrated System Design and Implementation; Bio-Inspired Materials and Systems; Energy Harvesting, 2012
Active Twist Rotor Blades for helicopter main rotors have been developed for the use in secondary control such as higher harmonic control (HHC) and individual blade control (IBC). The basic principle of such blades is the implementation of piezoelectric actuators into the blades causing the blades to twist.
Riemenschneider, Johannes, Schulz, Martin, Pohl, Martin   +2 more
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Electrohydraulic Active Damping System

CIRP Annals, 2005
A major characteristic of machine tools is the relative dynamic flexibility at the tool centre point. Poorly damped resonance frequencies often cause self-excited vibrations, so called chatter vibrations, which derogate the machined surface and may cause tool breakage.
C. Brecher, A. Schulz, M. Week
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Active piezoelectric damping composites

Sensors and Actuators A: Physical, 2004
Patches of active piezoelectric damping composites (APDC) consisting of piezoelectric rods, which are obliquely embedded across the thickness of viscoelastic damping matrix, are presented as a viable candidate for smart actuation. In this configuration, activation of the piezo-rods simultaneously enhances both the shear and compression damping ...
A. Baz, A. Tempia
openaire   +1 more source

Nonlinear active vibration damping

IEEE Transactions on Automatic Control, 1994
Summary: A multivariable nonlinear controller is investigated for vibration suppression of flexible structures. The closed-loop gain matrix consists of a varying term added to a constant term. The varying term is proportional to the measured signal, providing rapid cancellation of large deflections and maintaining low noise sensitivity.
Kanestrøm, R. K., Egeland, O.
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Active vibration damping device

The Journal of the Acoustical Society of America, 2008
An active vibration damping device having a solenoid actuator designed with a movable element positioned inserted into a guide hole of a stator having a yoke member is attached about a coil to form a stator-side magnetic path with the guide hole lying on its center axis, so that current passed through the coil creates actuating force in the axial ...
Hiroyuki Ichikawa, Yoshinori Watanabe
openaire   +1 more source