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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19 Mar 2004TL;DR: In this article, the authors proposed a method to reduce the rise time required for stabilizing the vibration state of a vibrator and the scale of a circuit needed for the activation of a driving vibration in exciting the driving vibrations in the vibrator.
Abstract: An object of the present invention is to reduce a rise time required for stabilizing the vibration state of a vibrator and the scale of a circuit needed for the activation of a driving vibration in exciting the driving vibration in the vibrator. A driving vibration is excited in a vibrator 1 for outputting a detection signal generated based on the driving vibration and a physical value, and the physical value is measured based on the detection signal. The driving vibration is excited using a circuit 9A for self-excited vibration having a CR oscillator 5A to generate an oscillation loop together with the vibrator 1. An activating signal of rectangular wave is applied on the vibrator 1 using the CR oscillator 5A to start the driving vibration in the vibrator 1.
32 citations
TL;DR: In this article, a new design algorithm is proposed for optimization of the induced strain actuator location and configuration for active vibration control based on an actuator performance index, namely the actuator power factor.
Abstract: In this paper, a new design algorithm is proposed for optimization of the inducedstrain actuator location and configuration for active vibration control based on an actuator performance index, namely the actuator power factor. The concept of actuator power factor, developed recently by the authors, describes the capability of an integrated induced strain actuator, such as PZT or Terfenol, to transfer the supplied electrical energy into structural mechanical energy (kinetic or potential energy of the mechanical system). A system optimized based on the actuator power factor will guarantee the highest energy efficiency for single frequency and broad-band applications. This paper will also show that a higher energy efficiency corresponds to higher mechanical performance. The approach introduced in this paper is much more convenient to use than the conventional modal domain optimization approach. Furthermore, since the power factor approach can include the electrical parameters from the power system, it will a...
32 citations
TL;DR: In this article, a vibration absorbing apparatus for reducing vibrations of a vibration damping objective comprises a vibration member excited by a piezo-ceramic element, whose voltage is controlled in accordance with the vibration state of the objective.
Abstract: A vibration absorbing apparatus for reducing vibrations of a vibration damping objective comprises a vibration member excited by a piezo-ceramic element. The voltage applied to the piezo-ceramic element is controlled in accordance with the vibration state of the objective.
32 citations
TL;DR: In this paper, a novel device for active vibration control, based on an inertial actuator with displacement sensor and local PID controller and an outer velocity feedback control loop, is used to control the vibrating flexible plate.
32 citations
TL;DR: In this article, a linear quadratic regulator (LQR) control algorithm has been proposed to control torsional vibration of a rotor shaft in large steam turbine generator sets.
32 citations