Improved method for Faraday current sensor data processing

There are several practical problems that have made difficult the prompt ap plication of Faraday current sensors in industrial environments. Two of the m are the multiplicative noise generated by mechanical vibrations and the n ormalization of the output signal. In this paper we propose a logarithmical processing and a posterior bandpass filtering of the sensor data in order to solve simultaneously both issues. Experimental results demonstrating the viability of the procedure and a comparison with standard processing metho ds are presented. (C) 2001 Elsevier Science B.V. All rights reserved.