Switching Control of Nonlinear Interconnected Systems With Unknown Control Directions
Zhonghua Sun, Changchun Hua
Abstract
A switching control scheme is presented for a class of nonlinear interconnected systems subjected to multiple unknown control directions. The unknown control coefficients considered in this article are time varying and have nonidentical signs, which makes the system model more generalizable. The switching controller proposed in this article is adopted to address the problem of unknown control directions, which solves the defects of the controller based on the Nussbaum gain technique. With the help of the proposed switching controller combined with dynamic gains, the boundedness of the system state and other signals is ensured for all time. Additionally, the system state can be regulated to zero by the proposed switching controller when the system is not affected by uncertainties and external disturbances. Finally, the effectiveness of the proposed switching control method is verified by simulation results.