Abstract
This chapter describes a new diagnosis approach, the Root-MUSIC (RM) method, for identification of the progressive cracking in the rotor of induction motors. This method used initially in the domain of RADAR for localizing mobile targets is being applied to the domain of induction motors diagnosis. This approach has several advantages compared to the conventional power spectral density estimation (PSD) by periodogram technique. Indeed, the main advantage of this approach is its very good frequency resolution for a very short acquisition time, something impossible to achieve with the conventional method. However, in order to reduce the computation time which is the main drawback of the RM method, this method will be applied to only a specified frequency band: one that carries information about the sought fault.
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