Fixed-Time Tracking Control for Nonlinear Cascade Systems with Unknown High Powers

This paper investigates the global fixed-time tracking control problem of nonlinear cascade systems with unknown high powers. In process design, a upper bound and lower powers are introduced to compensate system powers, state feedback controller is designed under any initial conditions. Based on Lyapunov stability analysis method theory, it verified that proposed can regulate output error disc region origin within all closed-loop signals bounded. At last, effectiveness scheme by some simulation results.