摘要
工况下传递路径分析方法(OTPA)是在传统TPA方法的基础上改进而来的。目前OTPA方法已经广泛应用于工程机械领域振动信号之间的传递特性分析中,而在振动和噪声信号之间的应用较少。应用OTPA方法,以发动机振动为主要激励源进行分析,研究某型液压挖掘机的驾驶室耳旁结构噪声,并采用奇异值分解技术对输入信号进行处理。通过对比合成信号和实测信号,验证OTPA方法的有效性。通过各路径的噪声贡献分析,对降噪措施提出建议。
The operational transfer path analysis(OTPA)is actually an improvement of the traditional transfer pathanalysis method.So far OTPA method has been widely applied to the analysis of vibration signal transmission in engineeringmachinery.While the application of OTPA to the analysis of transmission between vibration signals and noise signals isrelatively few.In this paper,the OTPA is applied to analyze the structure-borne noise of an excavator’s cab with the enginevibration as the major vibration source.The singular value decomposition technique(SVD)is applied to process the inputsignal.The validity of the OTPA method is verified by comparing the synthetic output signal with the measured outputsignal.By means of the path noise contribution analysis,some noise reduction measures are proposed.
作者
齐全
周以齐
崔文玲
QI Quan;ZHOU Yi-qi;CUI Wen-ling(Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education,School of Mechanical Engineering, Shandong University, Jinan 250061, China;North Automatic Control Technology Institute, Taiyuan 030006, China)
出处
《噪声与振动控制》
CSCD
2017年第2期80-84,共5页
Noise and Vibration Control
