文章摘要
毛崎波,姜哲.简支矩形板声辐射的有源控制[J].声学技术,2002,(3):118~121,127
简支矩形板声辐射的有源控制
Active control of simply supported rectangular panel radiated sound
投稿时间:2000-07-07  修订日期:2001-03-02
DOI:
中文关键词: 声辐射模态  声功率  有源控制
英文关键词: radiation modes  sound power  active control
基金项目:教育部博士点基金资助项目(9829903)
作者单位
毛崎波 南京大学声学研究所近代声学国家重点实验室, 南京, 210093 
姜哲 江苏理工大学振动噪声研究所, 镇江, 212013 
摘要点击次数: 704
全文下载次数: 828
中文摘要:
      文章以简支平板为例,通过声辐射模态研究结构声辐射的有源控制。首先分析了声辐射模态的数学和物理意义。由于在中、低频时,声辐射模态对应的辐射效率随着模态阶数的增加而迅速降低。在此基础上,文中提出了一种新的控制策略,即抵消前k阶声辐射模态的伴随系数,使得前k阶声辐射模态的声功率为零。文中以压电陶瓷作动器作为控制力源进行了数值计算研究。并与传统的控制策略———声功率最小化策略进行了比较。
英文摘要:
      In this paper, with an example of simply supported rectangular panel, it is presented active of control structure borne sound radiation by means of radiation modes. And physical characteristics and mathematical meaning of the radiation modes are analyzed. The radiation efficiency of the radiation modes falls off very rapidly with increasing modes order at low frequency. A new control strategy is developed in which by canceling the adjoint coefficient of the former k ranks radiation modes, the sound powers of the former k ranks radiation modes is zero theoretically. The numerical calculation is made by using PZT actuators as control forces. The results are compared with the traditional control strategy-the minimization of sound power.
查看全文   查看/发表评论  下载PDF阅读器
关闭
function PdfOpen(url){ var win="toolbar=no,location=no,directories=no,status=yes,menubar=yes,scrollbars=yes,resizable=yes"; window.open(url,"",win); } function openWin(url,w,h){ var win="toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,width=" + w + ",height=" + h; controlWindow=window.open(url,"",win); } &et=1FADCB9F2B799279B6D22B51EE3E8A8CD7B53831889918A03D7A1C712B189E6229E0EED01A4521392766CECA239BD8CC986A581AFAD2F0767444B15DBBE270C268874A20F735E8BC&pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=DDCFCD5ACE1B1E5A6D46213553C850CA&yid=C3ACC247184A22C1&aid=&vid=&iid=38B194292C032A66&sid=7F5DDA4924737DF5&eid=046252BD95DF9596&fileno=20020305&flag=1&is_more=0">