Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

PD Controller: Design

PD Controller: Design

In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...

Feedback control systems

Feedback control systems

Feedback control systems are categorized in various ways based on their design, analysis, and signal types.
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...

Magnetic Damping

Magnetic Damping

Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...

Open and closed-loop control systems

Open and closed-loop control systems

Control systems are foundational elements in automation and engineering. They are broadly categorized into open-loop and closed-loop systems. These classifications hinge on the presence or absence of feedback mechanisms, significantly influencing the system's performance, complexity, and application.
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal and...

Types of Damping

Types of Damping

If the amount of damping in a system is gradually increased, the period and frequency start to become affected because damping opposes, and hence slows, the back and forth motion (the net force is smaller in both directions). If there is a very large amount of damping, the system does not even oscillate; instead, it slowly moves toward equilibrium. In brief, an overdamped system moves slowly towards equilibrium, whereas an underdamped system moves quickly to equilibrium but will oscillate about...

Control of Power Flow

Control of Power Flow

There are several methods to control power flow in power systems:

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Ultrasonic Propagation in Liquid and Ice Water Drops. Effect of Porosity.

Sensors (Basel, Switzerland)·2021

Same author

Integrated tuned vibration absorbers: a theoretical study.

The Journal of the Acoustical Society of America·2013

Same author

A comparison of decentralized, distributed, and centralized vibro-acoustic control.

The Journal of the Acoustical Society of America·2010

Same author

Double panel with skyhook active damping control units for control of sound radiation.

The Journal of the Acoustical Society of America·2010

Same author

Active damping control unit using a small scale proof mass electrodynamic actuator.

The Journal of the Acoustical Society of America·2008

Same author

Rectangular plate with velocity feedback loops using triangularly shaped piezoceramic actuators: experimental control performance.

The Journal of the Acoustical Society of America·2008

Search research articles

Related Experiment Video

Updated: Jul 3, 2026

Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator

Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator

Published on: February 14, 2025

Smart panel with active damping units. Implementation of decentralized control.

Cristóbal González Díaz¹, Christoph Paulitsch, Paolo Gardonio

¹Institute of Sound and Vibration Research, University of Southampton, Southampton SO17 1BJ, United Kingdom. cgd@isvr.soton.ac.uk

The Journal of the Acoustical Society of America

|August 7, 2008

Summary

This summary is machine-generated.

This study on smart panels with decentralized velocity feedback control demonstrates significant reductions in vibration and sound radiation. The smart panel technology achieved up to 10 dB reduction at low audio frequencies.

Related Experiment Videos

Last Updated: Jul 3, 2026

Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator

Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator

Published on: February 14, 2025

Area of Science:

Acoustic Engineering
Vibration Control
Smart Structures

Background:

Investigates a smart panel equipped with five decentralized velocity feedback control units.
Builds upon previous research on proof mass electrodynamic actuators for vibration suppression.

Purpose of the Study:

To analyze the theoretical and experimental implementation of five decentralized control loops.
To assess the stability and control performance of the smart panel system.

Main Methods:

Stability analysis using the generalized Nyquist criterion.
Eigenvalue loci plotting of frequency response functions.
Experimental validation using a scanning laser vibrometer and anechoic room measurements.

Main Results:

Demonstrated stability of the decentralized control units.
Achieved reductions of up to 10 dB in vibration response.
Measured up to 10 dB reduction in radiated sound power.

Conclusions:

The smart panel with decentralized velocity feedback control is effective in reducing vibration and sound radiation.
Significant performance gains are observed at low audio frequencies (below 250 Hz).
Confirms the practical applicability of the developed control strategy.