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- Title
Disturbance‐observer‐based output feedback control of non‐linear cascaded systems with external disturbance.
- Authors
Wu, Kang; Zhang, Zhongcai; Sun, Changyin
- Abstract
The output feedback robust controller is proposed for a class of non‐linear systems with integral input‐to‐state stable inverse dynamics and external disturbance. The investigated systems represent more general classes of non‐linear uncertain systems. An extended state observer (ESO) is designed to estimate both the system states and the external disturbance by use of the disturbance as a generalised state. Based on the given reduced‐order ESO, a new error dynamic system is constructed. The global asymptotic regulation is guaranteed under the presented anti‐disturbance controller by the combined approach of backstepping and linear matrix inequality. The simulation result demonstrates the effectiveness of the given algorithm.
- Publication
IET Control Theory & Applications (Wiley-Blackwell), 2018, Vol 12, Issue 6, p738
- ISSN
1751-8644
- Publication type
Article
- DOI
10.1049/iet-cta.2017.0612