Topic
Active vibration control
About: Active vibration control is a research topic. Over the lifetime, 6770 publications have been published within this topic receiving 76599 citations. The topic is also known as: active vibration damping.
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Papers
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TL;DR: In this article, an active vibration control analysis of a circular plate coupled with piezoelectric layers on both sides by using an accurate method is presented based on classical plate theory (CPT).
31 citations
TL;DR: In this article, an active control of geometrically non-linear dynamic response of sandwich beams impacted by blast pulses with integrated piezoelectric sensor/actuator patches is addressed.
31 citations
TL;DR: Switching control strategy based on a combination of active vibration control and Short Time Fourier Transform is proposed in present work and can be used to detect the presence of even small cracks and works well inThe presence of bearing nonlinearities and flexible bearing supports that are inherently present in real rotor-bearing systems and qualitatively change dynamics of the overall system.
31 citations
Dissertation•
01 Jan 1999
TL;DR: In this paper, the analysis of the statistical and dynamic properties of tool vibration in external turning, a foundation in optimal and adaptive signal processing that enables the active control of tool vibrations in a lathe.
Abstract: In the turning operation the relative dynamic motion between cutting tool and workpiece, or vibration, is a frequent problem, which affects the result of the machining, and in particular, the surface finish. Tool life is also influenced by vibration. Noise in the working environment frequently occurs as a result of dynamic motion between the cutting tool and the workpiece. The research study includes the analysis of the statistical and dynamic properties of tool vibration in external turning, a foundation in optimal and adaptive signal processing that enables the active control of tool vibration in a lathe. It was found that the adaptive feedback control enables a broad-band attenuation of the tool vibrations, and is able to reduce the vibration level by almost 40 dB simultaneously at 1.5 kHz and 3 kHz. Further, the adaptive control reduced the acoustic noise level and it enabled a broad-band attenuation of the sound pressure in the frequency band 1.5 kHz to 25 kHz, with up to approximately 35 dB sound pressure level at 3 kHz. A significant improvement in the workpiece surface was also observed with the adaptive control. (Less)
31 citations
TL;DR: In this paper, a self-sensing method using piezoelectric actuators for semi-active vibration suppression is proposed and investigated, which can be implemented with a Kalman filter instead of the conventional bridge circuit technique.
Abstract: A novel self-sensing method using piezoelectric actuators for semi-active vibration suppression is proposed and investigated. By using extended system equations, this self-sensing method can be implemented with a Kalman filter instead of the conventional bridge circuit technique. The method separates electrical status into two cases concerning electrical current, and characterizes each of these to establish the self-sensing system. This method is applicable to multiple-degree-of-freedom structures with multiple piezoelectric actuators. A numerical vibration suppression simulation demonstrated that the self-sensing method works well on a truss structure and has significant robustness against parameter variations. Experimental results also demonstrated that the self-sensing method suppresses not only single-mode vibration but also multiple-mode vibration.
31 citations