MA Hui-fang 1 , ZHANG Zhi-nan 2 , WAN Zhao 1 , CHEN Ya-long 1 , YU Lei 1.Automatic Recognition for Aeroengine Rotor Unbalance Surge[J].航空发动机,2024,50(2):147-152
Automatic Recognition for Aeroengine Rotor Unbalance Surge
DOI:
Key Words:rotor  unbalance surge  vibration characteristics  multiple FFT filtering  vibration amplitude surge  vibration amplitude stabilization  automatic identification  aeroengine
Author NameAffiliation
MA Hui-fang 1 , ZHANG Zhi-nan 2 , WAN Zhao 1 , CHEN Ya-long 1 , YU Lei 1 1. AECC Commercial Aircraft Engine Co. Ltd. Shanghai 200241 China 2. School of Mechanical Engineering Shanghai Jiao Tong University Shanghai 200240 China 
Hits: 515
Download times: 349
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.
View Full Text  View/Add Comment  Download reader