Title :
LMI-Based Frequency Estimator with Averaging
Author :
Adachi, Kentaro ; Suemitsu, Haruo ; Matsuo, Takami
Author_Institution :
Oita Univ., Oita
Abstract :
In this paper, we propose an adaptive frequency estimator that does not need the filtered transformation by using the LMI-type adaptive update law. We derive the stability condition of the error system with bounded disturbances with a LMI. Moreover, we add the averaging factor to the frequency estimator in order to attenuate an error fluctuation arising due to noises in measurements. Finally, the performance of the proposed estimator is investigated by MATLAB simulations.
Keywords :
adaptive control; frequency estimation; linear matrix inequalities; stability; LMI-based frequency estimator; LMI-type adaptive update law; adaptive frequency estimator; bounded disturbances; error system; stability condition; Adaptive filters; Amplitude estimation; Attenuation measurement; Finite impulse response filter; Fluctuations; Frequency estimation; Frequency measurement; Noise measurement; Phase estimation; Stability;
Conference_Titel :
Innovative Computing, Information and Control, 2007. ICICIC '07. Second International Conference on
Conference_Location :
Kumamoto
Print_ISBN :
0-7695-2882-1
DOI :
10.1109/ICICIC.2007.370
