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结构声辐射主动控制中，“控制溢出”是一个重要问题，它直接关系到结构声辐射主动控制的成败．本文从“结构模态声辐射效率”出发，提出了结构声辐射“优势模态”和“劣势模态”新概念，全面阐述了振动结构中各种模态对声场的影响，为解决低频结构声辐射主动控制中“控制溢出”的理论问题提供了一条有效的途径，文章中以四角简支矩形板为研究对象，对其模态辐射效率进行了理论推导并进行了结构声辐射主动控制实验验证，得出了和文中一致的结论．
Active control of structural acoustic radiation, “control overflow” is an important issue, which is directly related to the success or failure of active control of structural acoustic radiation. In this paper, a new concept of “dominant mode” and “inferior mode” of structural acoustic radiation is proposed based on the “structural modal acoustic radiation efficiency”. The effects of various modalities on the acoustic field in a vibrating structure are comprehensively described. In order to solve the problem of low frequency structure An active approach is provided for the theoretical problem of “controlling spillover” in the active control of acoustic radiation. In this paper, the four-angle simply supported rectangular plate is taken as the research object, and its modal radiation efficiency is theoretically deduced and the active control experiment of structure acoustic radiation Verify, come to the same conclusion with the text.