A nonlinear robust PI controller for an uncertain system
Por:
Aguilar-Ibañez C., Mendoza-Mendoza J.A., Suarez-Castanon M.S., Davila J.
Publicada:
1 ene 2014
Resumen:
This paper presents a smooth control strategy for the regulation problem of an uncertain system, which assures uniform ultimate boundedness of the closed-loop system inside of the zero-state neighbourhood. This neighbourhood can be made arbitrarily small. To this end, a class of nonlinear proportional integral controllers or PI controllers was designed. The behaviour of this controller emulates very close a sliding mode controller. To accomplish this behaviour saturation functions were combined with traditional PI controller. The controller did not need a high-gain controller or a sliding mode controller to accomplish robustness against unmodelled persistent perturbations. The obtained closed-solution has a finite time of convergence in a small vicinity. The corresponding stability convergence analysis was done applying the traditional Lyapunov method. Numerical simulations were carried out to assess the effectiveness of the obtained controller. © 2014 © 2014 Taylor & Francis.
Filiaciones:
Aguilar-Ibañez C.:
CIC-IPN, Av. Juan de Dios Bátiz s/n, Col. San Pedro Zacatenco, A.P. 75476, D.F. 07738, Mexico
Mendoza-Mendoza J.A.:
CIC-IPN, Av. Juan de Dios Bátiz s/n, Col. San Pedro Zacatenco, A.P. 75476, D.F. 07738, Mexico
Suarez-Castanon M.S.:
ESCOM-IPN, Av. Miguel Othón de Mendizábal s/n, Col. La Escalera, D.F. 07738, Mexico
Davila J.:
ESIME-IPN, Av. Ticoman 600, Col. San Jose Ticoman, D.F. 07340, Mexico
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