OTPA方法在压路机驾驶室振动分析上的应用  

Application of Operational Transfer Path Analysis on Vibration Analysis of Roller's Cab

作　　者：胡涵[1] 史正文 闫鹏 米永振 郑辉[1] HU Han;Sill Zhengwen;fAN Peng;MI fongzhen;ZHENG Hui(State Key Laboratory of Mechanical System and Vibration, Shanghai Jiaotong University, Shanghai 200240, China;XCMG Construction Machinery Co.Ltd, XCMG, Xuzhou 221004, Jiangsu China)

机构地区：[1]上海交通大学机械系统与振动国家重点实验室,上海200240 [2]徐工集团徐工机械道路机械分公司,江苏徐州221004

出　　处：《噪声与振动控制》2018年第A01期143-145,共3页Noise and Vibration Control

摘　　要：应用奇异值分解技术改进的工况传递路径方法,对某型号双钢轮压路机驾驶室的振动情况进行分析。采集压路机工况试验下的振动数据,建立从包含发动机、钢轮到驾驶室的4条振动传递路径模型。根据模型计算合成的输出信号与实测输出信号能够良好的吻合,验证模型的正确性。对合成信号进行频域分析,找到驾驶室振动的主要峰值频率。针对主要峰值频率,计算各振动路径贡献度,并相应地提出了具体的减振方案。为解决同类工程机械结构振动问题提供了工程指导。The Operational Transfer Path Analysis（OTPA）, improved by singular value decomposition（SVD）technique, is applied to analyze the vibration of a Double-drum vibratory roller＇s cabin. With the vibration test data under working condition,an OTPA model of vibration from the engine and wheels to the cabin including four vibrational transmission paths is built. The synthesized output signal calculated by the model agreed well with those test output signals,demonstrating the effectiveness of the model. The frequency domain analysis of the synthetic signal is carried out to find the main peak frequency of the vibration of the cabin. According to the main peak frequency, the contribution degree of each path is calculated, and the specific improvements are put forward accordingly. The research provides an efficient engineering reference to vibration transmission control of similar engineering mechanical structure.

关 键 词：振动与波 运行工况传递路径分析 奇异值分解 压路机 振动贡献度 

分 类 号：TB534.2[理学—物理]