无转速计的旋转机械Vold-Kalman阶比跟踪研究  

Tacholess Vold-Kalman order tracking of rotating machinery

作　　者：邓蕾[1] 傅炜娜[1] 董绍江[1] 汤宝平[1] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400030

出　　处：《振动与冲击》2011年第3期5-9,共5页Journal of Vibration and Shock

基　　金：国家高技术研究发展计划(863计划)(2009AA04Z411);国家自然科学基金(50875272);高等学校博士学科点专项科研基金(20090191110005);重庆大学"211工程"三期建设研究生开放实验室资助(S-0916)

摘　　要：结合旋转机械升降速阶段振动信号的特点,提出一种无转速计的旋转机械Vold-Kalman阶比跟踪方法。该方法利用能量重心法对振动信号进行频谱校正,估计瞬时频率,获得参考轴转速信号,再对振动信号进行Vold-Kalman阶比跟踪,提取阶比分量。与需要转速计的经典Vold-Kalman阶比跟踪方法相比,该方法无需鉴相装置,完全用软件方式实现,算法精度高。仿真和应用实例分析结果表明此方法能够在时域中准确地提取幅值和频率变化的阶比分量。In consideration of vibration signals characteristics during run-up or coast down of rotating machinery,a novel order tracking method for rotating machinery based on tacholess Vold-Kalman order tracking filtering technique was proposed.The instantaneous frequency was estimated by the energy centrobaric method,then the order components of vibration signals were extracted by the Vold-Kalman order tracking.Compared with conventional methods of Vold-Kalman ordering tracking technology,the proposed method has high precision with no aid of tachometer and other special hardware.The results of simulation and application show that the proposed method can,in time domain,extract precisely the amplitude and the order components of varying frequency signals.

关 键 词：阶比跟踪 Vold-Kalman滤波 能量重心法 瞬时频率估计 

分 类 号：TN911.6[电子电信—通信与信息系统] TH115[电子电信—信息与通信工程]