نتایج جستجو برای: generalized backstepping method

تعداد نتایج: 1766831  

2008
Fei Long Sheng Zhang Jun Yang

In this paper, we discuss stabilization problem for a class of switched nonlinear systems whose subsystem with trigonal structure. A backstepping switching control design is given. Based on backsteppping approach, stabilizer and a switching law are designed for such systems. The stabilization of the resulting closed-loop systems is proved via common Lyapunov function method.

2012
Liang Liu Xue-Jun Xie X. J. XIE

This paper investigates the problem of adaptive output feedback stabilization using MT-filters and the backstepping design method for a class of nonlinear systems with unknown input and output time-delay. It is shown that all the signals in the closed-loop system are globally uniformly bounded, and the output can be regulated to zero.

Journal: :Automatica 2002
Harry G. Kwatny Carole Teolis Michael S. Mattice

A new approach to control system design for systems containing sandwiched, uncertain, non-smooth friction is proposed. The method is based on a multi-state backstepping approach to variable structure control design. Stability and robustness properties are investigated and examples are given. ? 2002 Elsevier Science Ltd. All rights reserved.

2007
A. Witkowska R. Smierzchalski

The article systematises and perform approaches the new concept of the ship autopilot in which control rules are derived for nonlinear controllers designed with the aid of the backstepping method and used for controlling the ship’s motion on its course. The objectives, approaches and problems were described. The design is very interesting has goals to create closed-loop systems with desirable s...

2016
MOHAMMED RACHIDI

This paper presents an adaptive nonlinear controller for Doubly-Fed Induction Generator (DFIG) in wind power generation. The control objective is to extract the maximum power (Maximum Power Point Tracking) and have a specified reactive power at the generator terminal despite the variable wind speed and the unknown mechanical parameters and mechanical torque. To achieve such a decoupled control,...

Journal: :Journal of Zhejiang University. Science 2004
Hong Yu Zheng-jin Feng Xu-yong Wang

The dynamics of hydraulic systems are highly nonlinear and the system may be subjected to non-smooth and discontinuous nonlinearities due to directional change of valve opening, friction, etc. Aside from the nonlinear nature of hydraulic dynamics, hydraulic servo systems also have large extent of model uncertainties. To address these challenging issues, a robust state-feedback controller is des...

2010
Ruicheng Ma Jun Zhao Georgi M. Dimirovski Xinquan Zhang

This paper is concerned with the global H∞ control problem for a class of switched nonlinear systems in lower triangular form under arbitrary switchings. A common Lyapunov function and a common smooth state feedback controller are constructed by backstepping such that the closedloop system is globally asymptotically stable under arbitrary switchings without disturbance input and has the prescri...

Journal: :IEEE Trans. Automat. Contr. 2003
Shuzhi Sam Ge Fan Hong Tong Heng Lee

In this note, adaptive neural control is presented for a class of strict-feedback nonlinear systems with unknown time delays. Using appropriate Lyapunov–Krasovskii functionals, the uncertainties of unknown time delays are compensated for such that iterative backstepping design can be carried out. In addition, controller singularity problems are solved by using the integral Lyapunov function and...

2008
Jin Heon Seo Juhoon Back Sejin Kang Hyungbo Shim

Abstract: Due to the difficulty in solving the Hamilton-Jacobi-Isaacs equation, the nonlinear optimal control approach is not very practical in general. To overcome this problem, Ezal et al. (2000) first solved a linear optimal control problem for the linearized model of a nonlinear system given in the strict-feedback form. Then, using the backstepping procedure, a nonlinear feedback controller...

2013
Yongqiao Wei Li Hou Zhijun Sun Fenglan Jia Bo Li

In order to achieve the accurate trajectory tracking of 2 degree-of –freedom robot, a backstepping adaptive fuzzy control scheme based on Lyapunov method, is presented for the SCARA (Selective Compliance Assembly Robot Arm) robot system. The control strategy consists of the traditional backstepping control and adaptive fuzzy control to cope with the model unknown and parameter disturbances. The...

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