| Abstract:In order to realize automatic identification of rotor unbalance surge in the aeroengine, firstly, multiple FFT filtering technol?
ogy was used to obtain the time-domain signal of fundamental frequency vibration after speed tracking filtering; secondly, two
characteristics of rotor unbalance surge were proposed: amplitude surge and amplitude stabilized after the surge, and the vibration signals
were processed through programming. In the application case, by using the time-domain signal of fundamental frequency vibration and the
identification parameters of rotor unbalance surge, it was found that the amplitude scaling coefficient reached 3.75 at a certain time, then
stabilized after the surge, by which the unbalance surge event was identified. The results show that the method can realize automatic
identification of rotor unbalance surge by using multiple FFT filtering technology and the programmed characteristic parameter identifica?
tion, and its effectiveness is verified. When the identification technology of rotor unbalance surge is applied to the online monitoring
system, it can timely identify faults and send out alarm messages to ensure the safety of equipment operation; when applied to off-line vibra?
tion signal analysis systems, it can shorten manual data analysis time and improve work efficiency. |
