基于结构声学理论，以简支矩形板为例建立了弹性结构声辐射有源控制模型，在次能力源分别为点源和分布力源作用下，由计算机模拟结果表明，振动结构声辐射强烈的奇－奇模态能得到有效抑制，并证实了有源结构模态抑制与重构机理的存在，次级力源的作用位置对声辐射的抑制具有重要意义。 Based on the theory of structure acoustics, an active control model of acoustic radiation of elastic structure is established with simple rectangular plate as an example. Under the action of point source and distributed force source respectively, the computer simulation results show that the acoustic radiation of the vibration structure is strong Odd-odd mode can be effectively suppressed, and confirmed the existence of the active structure modal inhibition and reconstruction mechanism, the position of secondary force source for the suppression of acoustic radiation is of great significance.