摘要
针对一类二阶非线性系统的有限时间状态反馈镇定问题进行了讨论.给出了三种基于连续状态反馈的全局有限时间状态反馈镇定方法.首先,利用非线性齐次系统性质,设计出一种状态反馈控制器,使得闭环系统渐近稳定并且具有负的齐次度;其次,基于有限时间Lyapunov函数的反步构造法,给出了一种有限时间控制器;最后,利用非奇异终端滑模控制技术,得到了一种使闭环系统有限时间收敛到平衡点的反馈镇定控制器.仿真结果表明了这些方法的有效性.
The finite-time feedback stabilization problem of a class of second-order nonlinear systems is discussed. Three kinds of global finite-time feedback stabilization approaches based on continuous state feedback are given. First, using homogeneous properties of nonlinear homogeneous systems, a state feedback controller is designed to guarantee that the closed loop system is asymptotically stable and satisfies negative homogeneity. Second, using backstepping constructive approach based on finite-time Lyapunov function, a finite-time controller is developed. Finally, using nonsingular terminal sliding mode technology, a feedback stabilizing controller which can make the closed loop system converge to equilibrium in finite time is given. Simulation results are provided to demonstrate the effectiveness of these approaches.
出处
《自动化学报》
EI
CSCD
北大核心
2007年第1期101-104,共4页
Acta Automatica Sinica
基金
国家自然科学基金(60504007
60425308)资助
东南大学优秀青年教师资助~~
关键词
非线性系统
有限时间控制
有限时间稳定性
反馈镇定
Nonlinear systems, finite-time control, finite-time stability, feedback stabilization
