基于瞬时频率估计的旋转机械阶比跟踪

ORDER TRACKING OF ROTATINGMACHINERY BASED ONINSTANTANEOUS FREQUENCYESTIMATION

提出了基于瞬时频率估计(Instantaneous frequency estimation,IFE)实现旋转机械阶比跟踪的新方法,其优点是简化了阶比分析对硬件的要求,用软件的方法实现了阶比跟踪,仿真与实际测试试验验证了本方法的正确性。本方法实现了旋转机械非平稳振动信号中参考轴瞬时转速的跟踪、估计算法,为阶比分析的实际应用提供了一种新方法,是对原有阶比跟踪技术的有力补充,特别适合于虚拟仪器发展的要求。

A new method of order tracking of rotating machinery based on instantaneous frequency estimation (IFE), is proposed. Compared with traditional methods of order tracking, this method takes some outstanding advantages, for example, hardware simplified, which required by order analysis and only software depended for order tracking. The simulations and actual test testify the validity of the method. The algorithms of the tracking and estimation about the instantaneous speed of reference shaft are programmed. This method is an effective supplement to traditional order tracking methods and specially satisfied the requirement of virtual instruments.