Finite-time fuzzy adaptive quantized output feedback control of triangular structural systems

This paper proposes a finite-time fuzzy adaptive quantized control scheme for a class of triangular structural nonlinear systems. Specifically, a smooth function with intermediate control law is introduced in the modified backstepping recursive process to eliminate the effect of quantization. The output constraints issue is solved by employing a barrier Lyapunov function. Then, a command filter is applied to avoid repeatedly differentiating virtual control signals and reduce the computational complexity. Moreover, the proposed method can guarantee that the tracking error converges to a small neighborhood of the origin in the finite time. Finally, the performance and the effectiveness of the proposed method are demonstrated via simulation results. (C) 2020 Elsevier Inc. All rights reserved.

Automated summary

A finite-time fuzzy adaptive quantized control scheme is proposed for triangular structural nonlinear systems, introducing a smooth function, barrier Lyapunov function, and command filter to address quantization, output constraints, and computational complexity issues while ensuring convergence of tracking error to a small neighborhood of the origin within a finite time. Simulation results demonstrate the performance and effectiveness of the proposed method.