Second-Order Sliding Mode Control for Nonlinear Uncertain Systems Bounded by Positive Functions

Second-Order Sliding Mode Control for Nonlinear Uncertain Systems Bounded by Positive Functions
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正函数为界的非线性不确定系统的二阶滑模控制

DOI:
10.1109/tie.2015.2448064
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发表时间:
2015-06
影响因子:
7.7
通讯作者:
Zheng, Wei Xing
Zheng, Wei Xing
中科院分区:
计算机科学1区
文献类型:
--
作者:
Ding, Shihong;Wang, Jiadian;Zheng, Wei Xing

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研究了一类具有正函数有界不确定性的非线性系统的二阶滑模控制设计问题。提出了两种不同的2-滑模控制算法,包括一个不连续的和准连续的。基于李雅普诺夫方法建立了不连续算法,并利用改进的加幂积分技术证明了闭环系统的全局有限时间李雅普诺夫稳定性而不是全局有限时间收敛性.在此基础上,进一步提出了一种准连续双滑模控制算法,可大大减小抖振问题。仿真结果表明了本文提出的控制策略的有效性。
This paper considers the second-order sliding (2-sliding) mode control design problem for nonlinear systems with uncertainties bounded by positive functions. Two different 2-sliding mode control algorithms are proposed, including a discontinuous one and a quasi-continuous one. The discontinuous algorithm is built based upon the Lyapunov method, and the global finite-time Lyapunov stability rather than the global finite-time convergence is established for the resulting closed-loop system by using the modified adding a power integrator technique. On this basis, a quasi-continuous 2-sliding mode algorithm is further developed, and the chattering problem can be considerably reduced. Simulation results show that the control strategies proposed in this paper are effective.
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