文献类型：期刊文献

英文题名：Steady-state oscillation-free extremum seeking control: a hybrid of switched gradient estimators and adaptive-amplitude excitation

作者：Jiao, Daoshuai[1];Sun, Jinggao[1];Yan, Huaicheng[1];Lin, Jiadong[1]

机构：[1]East China Univ Sci & Technol, Key Lab Smart Mfg Energy Chem Proc, Minist Educ, Shanghai 200237, Peoples R China

年份：2026

卷号：14

期号：5

外文期刊名：INTERNATIONAL JOURNAL OF DYNAMICS AND CONTROL

收录：EI(收录号：20261920680338);WOS:【ESCI(收录号:WOS:001761412800003)】；

基金：This work was supported by the National Natural Science Foundation of China under Grants 62333005, 62073143.

语种：英文

外文关键词：Extremum seeking control; Adaptation; Gradient estimation; Anti-lock braking system

摘要：An extremum seeking control (ESC) scheme based on gradient-estimator switching is proposed in this paper to enhance both the dynamic response and steady-state performance. A novel amplitude adaptation law based on sliding-window dynamic gradient information forecasts output trends and gradually reduces excitation amplitude to zero after bypassing local extrema and attaining the global maximum, thus eliminating steady-state oscillations. To improve convergence accuracy, a Lyapunov-based switching strategy activates an observer-based gradient estimator when the system output enters a region proximal to the global maximum, enabling rapid, oscillation-free convergence. The stability of the proposed ESC scheme is rigorously proven via theoretical analysis. A simulation example is presented to demonstrate the effectiveness of the proposed ESC scheme, and its practical applicability is validated using an anti-lock braking system (ABS).