旋转机械振动信号形态滤波器的设计与分析  

Design and analysis of morphological filter for vibration signals of a rotating machinery

作　　者：杜必强[1] 唐贵基[1] 石俊杰[2] 

机构地区：[1]华北电力大学能源与动力工程学院,河北省保定市071003 [2]信息产业部电信研究院保定泰尔通信设备抗震研究所,河北省保定市071051

出　　处：《振动与冲击》2009年第9期79-81,共3页Journal of Vibration and Shock

基　　金：国家自然科学基金项目(50677017);河北省自然科学基金项目(E2008001237)资助项目

摘　　要：对实测采样振动信号的滤波处理,验证了形态滤波器在抑制信号干扰、保留信号原有特征方面的作用。定量分析了形态滤波器设计中结构元素的形状、宽度、幅值等因素对形态滤波器性能的影响程度以及振动信号的采样频率对结构元素尺寸的影响,并根据数据分析结果得出了在对旋转机械振动信号进行降噪滤波处理时,形态滤波器中结构元素的形状及尺寸的一般设计规律。Sampled real vibration signal with interferences was processed by morphological filtering,and the effect of noise reduction and primal feature reservation of morphological filtering was validated. The influences of shape,width and amplitude of structure elements on the performance of morphological filters,and the influences of vibration signal sampling rate on the size of structure elements were analyzed. Based on the analysis results,the general rules for shape,size of structure elements in design of morphological filter were elicited,they could be applied for de-noising and filtering of rotating machinery vibration signals.

关 键 词：旋转机械 振动信号 形态滤波器 结构元素 采样频率 

分 类 号：TK288[动力工程及工程热物理—动力机械及工程]