Results 221 to 230 of about 20,095 (267)
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Active Damping of Structures with Guy Cables
Journal of Guidance, Control, and Dynamics, 1997Summary: A strategy is presented for active damping of structures with guy cables. The active member consists of a piezoelectric actuator collocated with a force sensor. The control algorithm consists of an integral force feedback; it has guaranteed stability, including at the parametric resonance. The results are confirmed by an experiment.
Preumont, André, Achkire, Younes
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Active and passive magnetic constrained damping treatment
International Journal of Solids and Structures, 2003zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zheng, Huiming, Li, Ming, He, Zeng
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DAMPs activating innate immune responses in sepsis
Ageing Research Reviews, 2015Sepsis refers to the deleterious and non-resolving systemic inflammatory response of the host to microbial infection and is the leading cause of death in intensive care units. The pathogenesis of sepsis is highly complex. It is principally attributable to dysregulation of the innate immune system.
Jung-Woo Kang +3 more
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Arrangement for active sound damping
The Journal of the Acoustical Society of America, 1996It is known in the state of the art to dampen noise emissions by means of "anti-sound". In the gas exhaust installations of combustion machines, this is realized most often in that the exhaust gas flowing in the gas exhaust installation is charged with "anti-sound" produced by loudspeakers (12).
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Blind switch damping (BSD): A self-adaptive semi-active damping technique
Journal of Sound and Vibration, 2009Abstract Much attention was given to the control of vibrations for smart structures equipped with piezoelectric elements in the nineties. Active control has shown its efficiency, however, necessitating important power requirements and complex signal processing. To bypass these drawbacks, semi-passive control schemes have been proposed.
Lallart, Mickaël +6 more
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Vibration Damping and Control Using Active Constrained Layer Damping: A Survey
The Shock and Vibration Digest, 1999Vibration suppression using active constrained layer damping (ACLD) has proven to be an invaluable means for improving the performance of a wide variety of engineering systems. The ACLD combines the attractive attributes of active and passive damping in order to create a hybrid damping treatment that has high-energy dissipation characteristics.
C.H. Park, A. Baz
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Clipped viscous damping with negative stiffness for semi-active cable damping
Smart Materials and Structures, 2011This paper investigates numerically and experimentally clipped viscous damping with negative stiffness for semi-active cable damping. From simulations it is concluded that unclipped and clipped viscous damping with negative stiffness is equivalent to unclipped and clipped LQR. It is shown that optimized unclipped viscous damping with negative stiffness
F Weber, C Boston
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Actively Damped Piezoelectric Composite Wing [PDF]
, 1993 Aerospace structures require low weight and high performances. The interaction of these structures with their environment can be of different kinds. A very important one is the aeroelastic interaction between a wing and a subsonic or supersonic stream. In this paper the aeroelastic interaction of a composite laminate swept wing in a su-personic stream ...
Santini, Paolo +3 more
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Semi-active damping of drive systems
Journal of Vibration and Control, 2012Drive systems as used in machinery and technical applications often suffer from insufficient system damping. In order to improve the damping characteristic, the method of semi-active control is proposed. Specific requirements associated with drive systems are pointed out and addressed in the course of this paper.
Siegfried Frey +2 more
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Active control precision damping table
The Journal of the Acoustical Society of America, 1993An active control precision damping table supported by air springs. Level displacement and vibrations of the table are detected by a sensor or sensors, and sensor outputs are fed to a variation adder which carries out an adding operation on one of the sensor outputs and an inversion signal produced by inverting the other sensor output 180 degrees.
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