超磁致伸缩驱动器频率相关的动态磁滞模型  

Frequent-dependent Dynamic Hysteresis Model of Giant Magnetostrictive Actuator

作　　者：郑加驹[1] 王洪礼[1] 曹淑瑛[2] 

机构地区：[1]天津大学机械工程学院,天津300072 [2]河北工业大学电气工程与自动化学院,天津300130

出　　处：《机械工程学报》2008年第7期38-44,共7页Journal of Mechanical Engineering

基　　金：国家自然科学基金(10732020)

摘　　要：考虑超磁致伸缩驱动器频率相关的涡流损耗和异常损耗,将Jiles-Atherton静态磁化强度模型扩展为动态磁化强度模型。基于动态磁化强度模型及驱动器结构动力学原理,建立驱动器的动态磁滞模型,并应用遗传算法辨识该模型的参数。试验结果表明,该模型能在较宽的频率范围内较好地描述驱动器的动态磁滞特性,对驱动器的性能估计和控制器设计具有重要指导意义。The Jiles-Atherton static magnetization model is extended to a dynamic magnetization model by considering the frequency-dependent eddy current loss and anomalous loss of the giant magnetostrictive actuator. A dynamic hysteresis model is established based on the dynamic magnetization model and the structural dynamic principle of the actuator. Moreover, a genetic algorithm is used to identify the parameters of the model. Experimental results show that the proposed model can better describe the dynamic hysteresis characteristics of the actuator in a wide frequency range. Therefore, the model has important significance for performance estimation and controller design of the actuator.

关 键 词：超磁致伸缩驱动器 动态磁化强度模型 磁滞非线性 参数辨识 

分 类 号：TP271[自动化与计算机技术—检测技术与自动化装置]