Temperature Regulation via PI High-Order Sliding-Mode Controller Design: Application to a Class of Chemical Reactor

Ricardo Aguilar-López, Centro de Investigación y Estudios Avanzados del I.P.N.
Rafael Martínez-Guerra, Centro de Investigación y Estudios Avanzados del I.P.N.
Rafael Maya-Yescas, Universidad Michoacana de San Nicolás de Hidalgo

Abstract

The main issue of this paper is the synthesis of a robust control law for regulation purposes, which is applied to a class of chemical reactor which exhibits highly nonlinear and oscillatory behavior. The considered methodology employs the typical structure of Proportional-Integral controllers, where the corresponding integral term is now proposed as an integral high order sliding-mode compensator, which deals with the intrinsic nonlinearities of the system to be regulated. A theoretical frame is provided to demonstrate that the proposed controller produces semi-global practical stability; performance of the proposed methodology is assessed via comparison with other controllers.