Multi-Modal Active Vibration Control of a Lightweight Stress-Ribbon Footbridge Based on Subspace Identification

Identification of Nonlinear Modal Interactions in a Beam-Mass-Spring-Damper System based on Mono-Frequency Vibration Response

In this paper, nonlinear modal interactions caused by one-to-three internal resonance in a beam-mass-spring-damper system are investigated based on nonlinear system identification. For this purpose, the equations governing the transverse vibrations of the beam and mass are analyzed via the multiple scale method and the vibration response of the system under primary resonance is extracted. Then,...

Blockwise Subspace Identification for Active Noise Control

In this paper, a subspace identification solution is provided for Active Noise Control (ANC) problems. The solution is related to so-called block updating methods, where instead of updating the (feedforward) controller on a sample by sample base, it is updated each time based on a block of N samples. The use of the subspace identification based ANC methods enables non-iterative derivation and u...

Subspace Identification of Modal Coordinate Time Series

The paper presents how direct estimation of the modal coordinate time series can be performed using a time domain subspace based system identification method. The method overcomes the traditional limitation on maximum number of modal coordinates to be estimated being less or equal to the applied number of sensors. This is achieved by utilizing the information on system order inherent in the sta...

Field Programmable Gate Array Implementation of Active Control Laws for Multi-mode Vibration Damping

This paper investigate the possibility and effectiveness of multi-mode vibration control of a plate through real-time FPGA (Field Programmable Gate Array) implementation. This type of embedded system offers true parallel and high throughput computation abilities. The control object is an aluminum panel, clamped to a Perspex box’s upper side. Two types of control laws are studied. The first belo...

Active Vibration Control Using Modal Control and Experimental Implementation on Arduino Microcontroller