Observer-based adaptive scheme for fixed-time frequency estimation of biased sinusoidal signals. (May 2021)

• Record Type: Journal Article
• Authors: Shi, Shang; Min, Huifang; Ding, Shihong
• Is Part Of: Automatica. Volume 127(2021)
• Publication Date: 2021-05
• Subjects: Frequency estimation -- Observer-based adaptive -- Fixed-time estimation; Automatic control -- Periodicals; Automation -- Periodicals; 629.805
• DOI: 10.1016/j.automatica.2021.109559
• Languages: English
• ISSNs: 0005-1098

Abstract

Abstract: In this technical communique, we propose a novel observer-based adaptive scheme to deal with the parameter estimation problem of biased sinusoidal signals. Different from the existing adaptive frequency estimation scheme, the proposed scheme can achieve fixed-time frequency estimation, whose convergence time is independent of the initial errors. Simulation example with different initial values shows the effectiveness of the theoretical result.