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This paper addresses the disturbance rejection problem for a class of linear systems in the presence of input delay via DOBC approach. Truncated predictor feedback method is applied to deal with the input delay based on the estimate of state and external disturbance, and further endeavours are made to ensure the extra integral terms of the system state and external disturbance due to the input delay...
This paper investigates vibration control problem of a flexible marine riser coupled with the internal fluid dynamics. By applying Lyapunov's direct method, boundary control technique and high-gain observers, an output feedback boundary control is proposed to suppress the vibration of the riser system. With the proposed control, the control spillover is avoided and the stability of the closed-loop...
This paper investigates the global output feedback sampled-data control of a class of nonlinear systems with mismatched disturbances. A linear state observer is constructed to estimate the states. A disturbance observer is designed to estimate the mismatched disturbances. The sampled-data controller is proposed with the estimated states and the estimated disturbances. The output feedback controller...
This paper investigates the finite-time output feedback stabilization of rigid body attitude dynamics without velocity measurement on the special orthogonal group ( SO(3)). We first transform the stabilization problem on SO(3) into the stabilization issue on its Lie algebra ( so(3)) via the logarithm map. The proposed approach consists of exponential coordinates of SO(3) and the output of a nonlinear...
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