Abstract
This brief deals with the problem of fixed-time output feedback stabilization for a class of stable double integrator systems. A simple output feedback nonlinear proportional-derivative (PD) control is proposed. Lyapunov stability theory and bi-limit homogeneity technique are employed to show global fixed-time stability, i.e., there exists a convergence time that is uniformly bounded a priori and such a bound is independent of the initial states. The appealing feature of the proposed control is that it is fairly easy to construct with intuitive structure and can ensure global fixed-time stability by output feedback. Simulations illustrate the improved performance of the proposed approach.
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