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A New Procedure for Modal Parameter Estimation

This article looks at the new LMS PolyMAX method for Experimental Modal Analysis (EMA). PolyMAX is compared with other EMA methods and two examples are provided. A theoretical summary of the method is included as well. Experimental Modal Analysis (EMA) is currently one of the key technologies used in structural dynamics analysis. Based on the fundamentals of system identification, it has evolved into a ‘standard’ approach in mechanical product development. Modal analysis has, from the start, focused on solving specific problems related to the testing and modeling of large industrial structures. The merit of each new method or approach has always been evaluated for the added value it brought to help application engineers derive better models. EMA is now considered a ‘commodity’ tool with a continuously expanding application base.