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Modal Parameters Identification Accuracy with a Short Time Parametric Algorithm (2011)

Kuhfuß, B.; Schenck, C.; Li, L.

4th International Conference on Advanced Design and Manufacture (ADM 2011), 21st-23rd September 2011, Kunming (China);

Key Engineering Materials Vol. 486 (2011) pp 221-224, TransTech Publications, Switzerland, Online at


This paper presents a time-domain identification of modal parameters using least square algorithm. The main advantage of this method is the possibility to identify transient parameters within a short window length from sampled data. This paper focuses on numerical examinations about the influence of the applied window size, sampling rate and the noise content to the identification accuracy. The results show that the proposed method can estimate transient parameters accurately and may be applied to real-time control processes.