A Kind of Nonlinear Feedback Control and Its Application

Abstract

In order to improve the control performance of feedback control, this note presents a novel concept “nonlinear feedback control”. Different from the conventional linear feedback control, a nonlinear function of error signal is fed back to the controller. The controller is still designed by virtue of the linear or nonlinear control algorithm. The outstanding advantage of the nonlinear feedback control lies in that it requires less control energy and could obtain better control effect. Finally, two simulation experiments have been included to illustrate the effectiveness of the novel concept.