基于扰动观测器非线性系统预设时间全局镇定OA
Global stabilization of nonlinear systems with prescribed-time based on disturbance observer
针对具有外部扰动的一类严格反馈非线性系统,提出了一种基于扰动观测器的预设时间全局镇定策略.首先,设计一个预设时间扰动观测器,使估计误差在预设时间内收敛为零.其次,引入一种新型的时变尺度变换方法,将原来的有限时间镇定问题转化为变换后系统的预设时间全局镇定问题.最后,通过具体仿真示例验证了所提方案的可行性和有效性.
For a class of strict-feedback nonlinear systems with external perturbations,a global stabilization strategy based on perturbation observer was proposed.Firstly,a prescribed time disturbance observer was designed so that the estimation error converges to zero in the prescribed time.Secondly,a new time-varying scaling method was introduced to transform the original finite-time stabilization problem into the global stabilization problem of the prescribed time after the transformation.Finally,the feasibility and effectiveness of the proposed scheme were verified through specific simulation example.
张特冰;陈明;盖玉林;李丹;王雪娇
辽宁科技大学电子与信息工程学院,辽宁鞍山 114051辽宁科技大学电子与信息工程学院,辽宁鞍山 114051辽宁科技大学电子与信息工程学院,辽宁鞍山 114051辽宁科技大学电子与信息工程学院,辽宁鞍山 114051辽宁科技大学电子与信息工程学院,辽宁鞍山 114051
信息技术与安全科学
扰动观测器全局预设时间时变尺度变换严格反馈非线性系统普通李雅普诺夫函数
disturbance observerglobal prescribed-timetime-varying scale transformationstrict-feedback nonlinear systemcommon Lyapunov function
《安徽大学学报（自然科学版）》 2026 (2)
50-57,8
国家自然科学基金资助项目(U21A20483)
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