摘要
以超磁致伸缩执行器作为声纳安装平台有源隔振系统的主动控制器,研究了系统的流-固耦合动力学特性.分析了声纳安装平台有源隔振系统对于船舷侧振动的响应,分别以位移、速度和加速度作为反馈变量对隔振系统进行反馈控制,分析其主动隔振控制效果.结果表明,在声纳安装平台两级有源隔振系统中,以声纳安装平板加速度作为反馈变量的综合隔振性能最好,并且随着反馈增益的增大,隔振效果明显增强,有效隔振频段范围扩大.
Using a giant magnetostrictive actuator as active controller of a sonar platform＇s two-layer active vibration isolation system, the dynamic characteristics of the system were studied with fluid-solid coupling considered. The active vibration isolation was implemented by adopting displacement, velocity and acceleration as feedback variable respectively for vibration control. The results show that the active vibration isolation system has the best isolation performance when the acceleration of the sonar platform is adopted as the feedback variable; and that with increased feedback gain, the isolation performance against the vibration gets better, and the frequency bound for vibration isolation gets wider.
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2005年第8期1174-1178,共5页
Journal of Zhejiang University：Engineering Science
基金
声纳重点实验室基金资助项目(51446020101JW0404)
流体传动与控制国家重点实验室基金资助项目.
关键词
声纳安装平台
超磁致伸缩执行器
流固-耦合
主动隔振
sonar platform
giant magnetostrictive actuator
fluid-structure coupling
active vibration isolation
作者简介
陈定中（1969），男，湖南长沙人，博士生，主要从事振动、噪声控制研究。
通讯联系人：魏燕定，男，副教授．E-mail：weiyd@cmee．zju．edu．cn
