Modal Frequency Tracking of an Unknown Vibrational System

Abstract

Vibrational systems operating in hostile environments create a challenging processing problem especially in order to perform real-time monitoring. To monitor a particular type of device from noisy vibration data, requires the identification of signatures that make it unique. The monitoring of modal frequencies can be used to determine the condition of a device under investigation, especially if it is a critical entity of an operational system. The performance of a model-based scheme capable of the on-line tracking of modal vibration frequencies under a variety of operational scenarios is detailed.