【作者】 朱金才； 顾仲权；

【Author】 Zhu Jincai;Gu Zhongquan;

【机构】 南京航空航天大学飞行器系；

【摘要】 磁致伸缩材料是当今新兴智能材料的一种,它和其他智能材料相比有变形大、承载能力强、响应速度快和低频特性好等特点。本文以作者自行研制的磁致伸缩作动器作为振动主动控制的作动器,采用基于LMS算法的自适应滤波方法,进行了两种模型(主动隔振、主动吸振)在单频外扰情况下的振动主动控制试验研究。在研究中,提出了有时延的滤波-xLMS算法和智能吸振器的新概念。试验结果表明:用磁致伸缩作动器作为振动主动控制的作动器,有着较好的振动控制效果,且有较强的跟踪和适应能力。更多还原

【Abstract】 As a newly developing kind of intelligent material,megnetostrictive material has the advantage of being larger deformation,greater load-carrying,faster response velocity and better low frequency property than other intellingent materials.With adaptive filtering method based LMS algorithm,experiments of active vibration control(active isolation and active absorption)were carried out using the megnetostrictive actuators developed by ourselves under the condition of single frequency disturbance in this paper.In the study,new concept of filtering-xLMS algorithm with time-delaying and intelligent absorber was put forward.The experimental results show that the developed actuators can be effectively used in control structural vibration.更多还原