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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Journal Article•
TL;DR: In this article, an active vibration control of a tensioned, elastic, axially moving string is investigated, where the dynamics of the string are described with a non-linear partial differential equation coupled with an ordinary differential equation.
Abstract: In this paper, an active vibration control of a tensioned, elastic, axially moving string is investigated. The dynamics of the translating string are described with a non-linear partial differential equation coupled with an ordinary differential equation. A right boundary control to suppress the transverse vibrations of the translating continuum is proposed. The control law is derived via the Lyapunov second method. The exponential stability of the closed-loop system is verified. The effectiveness of the proposed control law is simulated.
36 citations
36 citations
TL;DR: In this article, an active reduction of mechanical vibration using an electrohydraulic actuator has been proposed, where the energy recuperated from the first suspension DOF is transferred by dedicated hydraulic system and stored in an accumulator.
Abstract: Studies of systems with energy regeneration have been carried out for years, because they primarily cover the assemblies with electrodynamic actuators. This paper addresses the issue of active reduction of mechanical vibration using an electrohydraulic actuator. The testing procedure aims to assess the potential use of those assemblies in a different frequency band and force range than in electrodynamic actuators. The paper explains the operating principle of the system, and the findings of laboratory tests are presented. The tested vibration reducing system is the physical model of a 2 degree-of-freedom (DOF) suspension. An initial analysis has been conducted to explore the potential use of the energy produced by the vibration of unsprung mass in the first degree of the suspension system, for power supply to the active component incorporated in the second suspension degree.The energy recuperated from the first suspension DOF is transferred by a dedicated hydraulic system and stored in an accumulator. Res...
36 citations
TL;DR: In this article, an active control technique utilizing piezoelectric actuators to alleviate gust response loads of a large-aspect-ratio flexible wing is investigated, and numerical gust responses are analyzed, based on which a gust load alleviation (GLA) control system is proposed.
36 citations
Patent•
30 May 2006TL;DR: An active noise/vibration/sound control system for a vehicle has an active noise control apparatus, an AVC (active vibration control apparatus), and an ASC (active sound control apparatus).
Abstract: An active noise/vibration/sound control system for a vehicle has an ANC (active noise control apparatus), an AVC (active vibration control apparatus), and an ASC (active sound control apparatus). To prevent the ANC, the AVC, and the ASC from interfering with each other and hence to prevent vehicle cabin environment of vibrations, noise, and sound from being impaired, activation and inactivation of the ANC, the AVC, and the ASC are controlled or their control characteristics are controlled in relation to each other by a weighting variable calculator as a coordination controller, depending on an engine rotation frequency and a frequency change which are representative of a running state of the vehicle as detected by an engine rotation frequency detector and a frequency change detector that serve as a running state detector.
35 citations