Design and Research of Aero-Engine State Monitoring System

For aero-engine vibration monitoring, a rotor balancing method based on least squared approximation is established, an aero-engine condition monitoring system is developed, system architecture, software and hardware design are carried out, and its correctness, effectiveness and reliability are verified in the real engine bench test. The results show that the designed vibration signal and high tooth signal conditioning method, the correlation algorithm to obtain the vibration fundamental frequency amplitude and phase, and the dynamic balance vibration information screening method and the dynamic balance least square approximation algorithm are adopted, which can ensure the accuracy and stability of dynamic balance calculation, and have certain engineering application prospects.