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A new frequency domain system identification method

Alexander Stotsky (Institutionen för signaler och system, Reglerteknik)
Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering (0959-6518). Vol. 226 (2012), 1, p. 111-125.
[Artikel, refereegranskad vetenskaplig]

A new frequency domain system identification method based on a multi-frequency input signal is proposed. Frequency contents of the oscillating signal are estimated using a modified Kaczmarz algorithm proposed in this paper. Lyapunov stability analysis is performed for this new Kaczmarz algorithm and transient bounds for estimation error are established. Moreover, a new method for estimation of the variance of the measurement noise in Kaczmarz algorithms is also described. A comparison of a transient performance of modified Kaczmarz algorithm and a recursive least-squares algorithm is presented. The results are applied to a frequency domain identification of a DC motor.



Denna post skapades 2012-01-10. Senast ändrad 2012-02-21.
CPL Pubid: 152028

 

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Institutioner (Chalmers)

Institutionen för signaler och system, Reglerteknik

Ämnesområden

Optimeringslära, systemteori

Chalmers infrastruktur