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Yungang Liu
Researcher at Shandong University
Publications - 21
Citations - 450
Yungang Liu is an academic researcher from Shandong University. The author has contributed to research in topics: Control theory & Nonlinear system. The author has an hindex of 11, co-authored 21 publications receiving 412 citations.
Papers
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Journal ArticleDOI
Output-feedback adaptive stabilization control design for non-holonomic systems with strong non-linear drifts
Yungang Liu,Ji-Feng Zhang +1 more
TL;DR: In this article, the problem of output-feedback adaptive stabilization control design for nonholonomic chained systems with strong non-linear drifts was investigated, including modelled nonlinear dynamics, unmodelled dynamics, and those modelled but with unknown parameters.
Journal ArticleDOI
Output-feedback Adaptive Control for a Class of Nonlinear Systems with Unknown Control Directions
TL;DR: In this article, an output-feedback adaptive stabilizing controller using integrator backstepping and tuning function techniques is proposed to ensure the original system state converges to the origin whereas all the other closed-loop system states are bounded.
Journal ArticleDOI
Adaptive Practical Output Tracking Control for High-order Nonlinear Uncertain Systems
Zong-Yao Sun,Yungang Liu +1 more
TL;DR: In this paper, a robust adaptive output tracking control for a class of high-order nonlinear uncertain systems is studied under the assumption that the lower bounds of the unknown control coefficients are exactly known.
Journal ArticleDOI
Adaptive stabilisation for a large class of high-order uncertain non-linear systems
Zong-Yao Sun,Yungang Liu +1 more
TL;DR: The problem of global adaptive stabilisation by state-feedback is investigated for a class of high-order non-linear systems with uncertain control coefficients and zero dynamics, and a recursive design procedure is successfully developed to achieve a continuous adaptive stabilising controller.
Journal ArticleDOI
Adaptive Control Design for a Class of Uncertain High-Order Nonlinear Systems with Time Delay
Zong-Yao Sun,Yungang Liu +1 more
TL;DR: In this article, a continuous adaptive state-feedback controller for a class of uncertain high-order nonlinear systems with time delays is proposed, under somewhat necessary restrictions on the system nonlinearities, by the method of adding a power integrator and the related adaptive technique.