控制理论与应用2013，Vol.30Issue(2)：148-155,8.DOI:10.7641/CTA.2013.20794
率相关超磁致伸缩作动器的建模与H∞鲁棒控制
Modeling and H-infinity robust control for giant magnetostrictive actuators with rate-dependent hysteresis
摘要
Abstract
The rate-dependent hysteresis in giant magnetostrictive materials is a major impediment to the application of such material in actuators. In this paper, a Hammerstein-like model based on the least-squares support vector machines (LS-SVM) is proposed to model the rate-dependent hysteresis system. We show that it is possible to construct a unique dynamic model in a given frequency range for a rate-dependent hysteresis system using the sinusoidal scanning signals as the training set of signals for the linear dynamic subsystem of the Hammerstein-like model, which guarantees an outstanding generalization ability of frequency. Subsequently, a robust controller based on the Hammerstein-like model is implemented to a magnetostrictive smart structure for real-time precise trajectory tracking. Simulations and experiments on a giant magnetostrictive actuator (GMA) verify both the effectiveness and the practicality of the proposed modeling and control methods.关键词
超磁致伸缩作动器/率相关迟滞/Hammerstein-like模型/最小二乘支持向量机/建模/H∞鲁棒控制Key words
giant magnetostrictive actuator/ rate-dependent hysteresis/ Hammerstein-like model/ least-squares support vector machines (LS-SVM)/ modeling/ H-infinity robust control分类
信息技术与安全科学引用本文复制引用
柳萍,毛剑琴,刘青松,周克敏..率相关超磁致伸缩作动器的建模与H∞鲁棒控制[J].控制理论与应用,2013,30(2):148-155,8.基金项目
国家自然科学基金资助项目(91016006,91116002) （91016006,91116002）
中央高校基本科研业务费专项资金及路易斯安那州大学董事会部分资金资助项目. （）
