Tacholess Vold-Kalman order tracking of rotating machinery

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.