Results 261 to 270 of about 294,420 (308)
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Active Control Of Flow-induced Vibration
Journal of Sound and Vibration, 1993Abstract The active control of flow-induced oscillations, specifically, vortex-induced oscillations of circular cylinders and galloping oscillations of circular cylinders and galloping oscillations of a square prism, are considered. In the case of vortex-induced oscillations, the vibrating cylinder is modeled as a single-degree-of-freedom (sdof ...
Venkatraman, K., Narayanan, S.
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Off-axis modal active vibration control of rotational vibrations
2012 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM), 2012Collocated active vibration control is an effective and robustly stable way of adding damping to the performance limiting vibrations of a plant. Besides the physical parameters of the Active Damping Unit (ADU) containing the collocated actuator and sensor, its location with respect to the compliances in the plant plays an important role in the ...
Babakhani, B. +2 more
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Active Vibration Control for Aeroengines
2021The problem of aero-engine vibration has always been the focus and difficulty of many scholars at home and abroad. Vibration control is an important research direction in the field of aeroengine vibration engineering. In order to solve the problems of poor adaptability to passive vibration isolation and insufficient control effect of aero-engines, this
Ran An +4 more
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Stirling-cycle cryocooler active vibration control
Proceedings of IEEE International Conference on Control and Applications, 2002A cryogenic cooler capable of continuously maintaining the required cryogenic temperature is one of the critical elements enabling space-borne surveillance sensors to detect cold objects against a space background or warm objects against an Earth background.
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Active Vibration Isolation by Adaptive Control
Journal of Vibration and Control, 2001In this paper, an adaptive controller known as a self-tuning regulator (STR) is employed for active vibration isolation. Numerical simulation of the developed STR for active vibration isolation of a simple two- degree-of-freedom mechanical system subject to external disturbances is carried out.
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Evolutionary adaptive active vibration control
Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering, 1997This paper presents an investigation into the development of an adaptive active control mechanism for vibration suppression using genetic algorithms (GAs). GAs are used to estimate the adaptive controller characteristics, where the controller is designed on the basis of optimal vibration suppression using the plant model.
M A Hossain, M O Tokhi
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Study on Active Vibration Control
Advanced Materials Research, 2013This paper analyses the active vibration control technology on the piezoelectric ceramics car-body pieces in fuzzy control Strategy. Adaptive controllers, based on fuzzy logics, are synthesized for the control of vibration of body structure. Piezoelectric element, control system and body structure have been combined to be a intelligent response system ...
Feng Xing +3 more
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Active control of mechanical vibrations
Bell Labs Technical Journal, 2009Recent advances in digital signal processing and actuation technology have opened the door to applying active control to reducing mechanical vibrations and acoustic noise. Because these techniques work best at lower frequency, they complement conventional passive damping techniques, which are most effective at higher frequencies.
Roger D. Benning +2 more
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Active Control for Vibration Damping
1988Active control laws are developed for an LSS-type structure to damp vibrations. High frequency modelling uncertainties lead to the necessity for a robust control design. The Linear Quadratic Gaussian with Loop Transfer Recovery (LQG/LTR) control design technique is a particular robust design technique selected for use in designing a damping control ...
P. J. Lynch, Siva S. Banda
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Active control of helicopter vibration
Computing & Control Engineering Journal, 1994The reduction of helicopter vibration is of great importance to the helicopter industry and considerable effort has been devoted to research into active methods for vibration reduction. The article describes how active control techniques can offer good vibration reduction over significant areas of the fuselage and also provide the capability to adapt ...
J.T. Pearson, R.M. Goodall, I. Lyndon
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