声纳安装平台减隔振主被动控制研究  

Active and passive control research on attenuation and isolation vibration of sonar platform

作　　者：沈国强[1,2] 魏燕定[2] 吕存养[2] 陈定中[2] 

机构地区：[1]杭州电子科技大学机械工程学院,浙江杭州310018 [2]浙江大学流体传动与控制国家重点实验室,浙江杭州310027

出　　处：《浙江大学学报（工学版）》2009年第7期1238-1242,共5页Journal of Zhejiang University：Engineering Science

基　　金：流体传动与控制国家重点实验室基金资助项目(51446020101JW0404)

摘　　要：为了减隔从舰船壳体向声纳阵传递的振动,设计了一种声纳安装平台主被动减隔振系统.在该系统中,采用弹簧和橡胶垫作为被动隔振元件,用以抑制高频振动;采用超磁致伸缩执行器作为主动致动器,用以抑制低频振动.建立了考虑流固耦合的系统动力学方程.基于线性矩阵不等式,设计了H∞控制器,对声纳安装平台减隔振系统进行了数值仿真研究.研究结果表明,所设计的主被动声纳安装平台减隔振系统对于舰船壳体传来的振动噪声以及外界扰动能有效加以抑制,从而提高了声纳的信噪比.In order to attenuate and isolate the vibration of the platform mounted sonar from the sh shell,a hybrid passive and active vibration isolation and attenuation system was designed. In this system, springs and rubber layer were adopted as passive vibration isolation elements to suppress the high-frequency vibration. A magnetostrictive actuator was adopted as an active vibration attenuation element to suppress the low-frequency vibration. The dynamic equation considering solid-liquid coupling was founded. Based on the linear matrix inequation, an H∞ controller was proposed. Numerical simulations were carried out, and the results showed that good isolation and attenuation performance against the disturbance of the ship＇s shell and external disturbance was obtained, and the signal-to-noise ratio was improved.

关 键 词：声纳安装平台 主动隔振 超磁致伸缩执行器 流固耦合 

分 类 号：TH113.1[机械工程—机械设计及理论]