Artículos de revistas
Estimação de frequência usando sensores de erro com atrasos adaptativos
Fecha
2011-07-01Registro en:
Controle y Automacao, v. 22, n. 4, p. 390-397, 2011.
0103-1759
10.1590/S0103-17592011000400006
S0103-17592011000400006
2-s2.0-80053923399
2-s2.0-80053923399.pdf
Autor
Universidade de São Paulo (USP)
Universidade Estadual Paulista (Unesp)
Institución
Resumen
This paper proposes a solution to improve the performance of the first order Early Error Sensing (EES) Adaptive Time Delay Tanlock Loops (ATDTL) presented in (Al-Zaabi, Al-Qutayri e Al-Araji, 2005), regarding to frequency estimation and tracking time. The EES-ATDTL are phaselocked-loops (PLL) used to hardware implementations, due to their simple structure. Fixed-points theorems are used to determine conditions for rapid convergence of the estimation process and a estimative of the frecuency input is obtained with a Gaussian filter that improves the gain adaptation. The mathematical models are the presented by (Al-Araji, Al-Qutayri e Al-Zaabi, 2006). Simulations have been performed to evaluate the theoretical results.