S型薄壁管结构振动噪声主动控制的研究

针对管状结构在航空航天某些应用场合中振动、噪声过大的实际情况，进行了振动、噪声控制实验研究。以某S型薄壁管结构模型为研究对象，利用压电智能结构，结合振动主动控制技术和FX—LMS自适应滤波算法，成功实现了振动噪声主动控制。实验结果表明，所采用的方法对此S型薄壁管结构的振动、噪声抑制的有效性。

Research on the Active Vibration and Noise Controlling of the S-shap Thin-wall Tube

Some research work has been done on the active vibration and noise controlling of the S-shape thin-walled tube,as to the fact that thin-walled tube structures used in the field of aeronautics and astronautics,generate more vibration and noise harmful to the work man and precise instruments. We used piezoelectric smart structure and active vibration controlling technology as well as the FX-LMS self-adaptive arithmetic to control the vibration and noise generated by the S-shape thin-walled tube. A active controlling system is realized.Experimental results show that the controlling system reduces the vibration of S-shape thin-wall tube effectively.