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Título del libro: 2017 Ieee 56th Annual Conference On Decision And Control (cdc)
Título del capítulo: An idea for Lyapunov function design for arbitrary order continuous twisting algorithms

Autores UNAM:
JESUS MENDOZA AVILA; JAIME ALBERTO MORENO PEREZ; LEONID FRIDMAN;
Autores externos:

Idioma:
Inglés
Año de publicación:
2018
Palabras clave:

Lyapunov functions; Polynomials; State feedback; Continuous state feedbacks; Finite time stability; Finite-time convergence; Homogeneous polynomials; Lypaunov functions; Recursive procedure; Third-order systems; Twisting algorithms; Continuous time systems


Resumen:

Continuous Twisting Algorithm (CTA) for systems of order n allows to compensate theoretically exactly Lipschitz time perturbations, generating a continuous control signal and ensuring finite-time convergence to a sliding mode of order (n + 1). In this paper an idea of a recursive procedure for Lypaunov Function (LF) and gains design for n - th order CTA is proposed. The procedure consists in constructing a homogeneous LF for the n - th order CTA as a sum of three generalized homogeneous polynomials of the same degree: (i) a LF for the continuous state feedback controlled system of order n; (ii) a LF for CTA of order (n - 1) and (iii) some extra cross terms. The two first terms can in turn be constructed in a recursive form. The proposed idea is illustrated with the design of a LF and gains for the second order CTA. Furthermore, the proposed procedure allows to select the control gains of the CTA for third order systems and to prove global finite-time stability. © 2017 IEEE.


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