Global stabilization for a class of uncertain nonlinear time-delay systems by linear sampled-data output feedback

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This paper investigates the problem of global stabilization for a class of uncertain nonlinear systems subject to time-delay by using a linear sampled-data output feedback controller. The uncertainty of the system satisfies the lower-triangular growth condition affected by time-delay. A linear output feedback controller with a tunable scaling gain is constructed. The proposed control law together with the observer control law is discrete-time, linear, and memoryless, therefore it is easy to be implemented by computers in practice.