On the state observation and output feedback problems for nonlinear uncertain dynamic systems
Systems & Control Letters
Nonlinear output-feedback tracking using high-gain observer and variable structure control
Automatica (Journal of IFAC)
Robust cooperative tracking for multiple non-identical second-order nonlinear systems
Automatica (Journal of IFAC)
Hi-index | 22.15 |
In this paper, we develop a new discontinuous output feedback tracking controller for a class of uncertain, nonlinear, multi-input/multi-output, mechanical systems whose dynamics are first-order differentiable. A novel filter design and Lyapunov-type stability analysis are used to prove semi-global asymptotic tracking. As a by-product of the proposed framework, we also present the design of a new simple, discontinuous velocity observer that ensures global asymptotic velocity observation.