Active vibration control of composite structures using microblaze™ soft core processor on virtex-4 FPGA

Abstract

The present work investigates Multi-channel Active Vibration Control (AVC) of a composite research wing model and shell structure using modified Filtered x Least Mean Square (FxLMS) algorithm on Field Programmable Gate Arrays (FPGAs). AVC, using Digital Signal Processing (DSP) techniques are cost effective. But FPGAs, consuming small silicon area, have emerged as a dominant technology in embedded applications with potential features like high speed processing and low power consumption. Prominent features like high-speed parallel processing architecture along with hardware reconfigurability facilitates its usage to be wide spread in signal processing applications. An adaptive active vibration control system based on feed forward modified FxLMS algorithm implemented on FPGA hardware is presented here. The results from the Multi channel real time AVC studies are brought out in the paper.