摘要
有多个独立转轴的旋转及往复运动机械在升降速过程产生的振动复杂,不同参考转轴的阶比在频率交叉的时候会产生拍波现象,使阶比成分的分离成为难题。通过研究周期性负载机械系统振动信号的特点,构造了包括状态方程和观测方程的振动信号模型,采用解耦合自适应滤波分离方法提取相交叉的阶比成分。克服了其他阶比跟踪方法不能分离交叉阶比的不足。
Vibration is complicated in run-up and coast-down process of rotating and reciprocating combustion machinery which has multiple independent axles. Orders that frequency interact in different axle reference cause beating phenomena which makes order separation difficult. Through studying haracteristic of periodic loading machine system, vibration model including state equation and observation equation was constructed. Order tracking was implemented by decouple adaptive filter and crossing order was separated and extracted. Adaptive filter order tracking method overcomes shortcoming that fail to separate crossing order of other order tracking methods.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2009年第1期213-216,共4页
Transactions of the Chinese Society for Agricultural Machinery
基金
国家"863"高技术研究发展计划资助项目(2006AA09Z239-2)
浙江省科技计划资助项目(2007C33067)
关键词
阶比跟踪
自适应滤波
交叉阶比
拍波
解耦合
Order tracking, Adaptive filter, Crossing order, Beating, Decouple
