Synchronization techniques can be classified into open-loop and closed-loop methods. In
power and energy applications, which are the focus here, the latter type is more popular …

This paper presents a method for addressing the dc component in the input signal of the
phase-locked loop (PLL) and notch filter algorithms applied to filtering and synchronization …

A concise, in-depth introduction to active disturbance rejection control theory for nonlinear
systems, with numerical simulations and clearly worked out equations Provides the …

The tracking differentiator was first proposed by Han in 1989 and the proof of convergence
was presented the first time in Han and Wang (Han, JQ, and Wang, W.(1994),'Nonlinear …

Online frequency estimation of a pure sinusoidal signal is a classical problem that has many
practical applications. Recently an ANF with global convergence property has been …

The problem of estimating the frequency of a harmonic signal embedded in broad-band
noise is considered. The paper focuses on the extended Kalman filter frequency tracker …

Asymptotically stable, observable linear systems of order n which are not required to be
minimum phase and are affected by an additive noisy biased sinusoidal disturbance with …

A novel two step adaptive identification framework is proposed for sinusoidal signals to
estimate the unknown offset, amplitude, frequency and phase, where only the output …

Given a signal which is available for measurements and consists of the sum of a bias and n
sinusoids with unknown amplitudes, frequencies and phases, a dynamic algorithm is …

Noise reduction and signal decomposition are among important and practical issues in time-
domain signal analysis. This paper presents an adaptive notch filter (ANF) to achieve both …