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  • 标题:Disturbance Frequency Estimation for an LTV System
  • 本地全文:下载
  • 作者:Marina Korotina ; Stanislav Aranovskiy ; Alexey Bobtsov
  • 期刊名称:IFAC PapersOnLine
  • 印刷版ISSN:2405-8963
  • 出版年度:2022
  • 卷号:55
  • 期号:12
  • 页码:318-323
  • DOI:10.1016/j.ifacol.2022.07.331
  • 语种:English
  • 出版社:Elsevier
  • 摘要:AbstractWe consider the frequency estimation problem for a sinusoidal disturbance acting on a linear time-varying system, where only the input and output signals are available. We propose a novel parametrization that translates this problem into a linear regression model with unknown parameters. The frequency estimation is performed using the Dynamic Regressor Extension and Mixing procedure and an algebraic finite-time estimator. The resulting scheme provides finite-time frequency estimation under the interval excitation condition. The role of the tuning coefficients in satisfying the convergence condition is also discussed. Simulations illustrate the applicability of the proposed solution.
  • 关键词:KeywordsAdaptive systemcontrolFrequency estimationTime-varying systemsExcitation
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