05 - Propulsion
AN IMPROVED IDENTIFICATION METHOD FOR ACTUATOR LOOP OF AIRCRAFT ENGINE CONTROL SYSTEM
N. Liu, Shanghai Aircraft Design & Research Institute, Commercial Aircra, China
For the problem of low identification accuracy of frequency domain identification method at low frequency, an Improved identification method with non-linear weight for actuator loop of aircraft engine control system is proposed. The method distributes weight coefficients among different frequency through non-linear interpolation, so as to distinguish the influence of different frequency on identification results. By backward solution for the delay, the proposed method is used to identify the actuator closed loop of aircraft engine control system. From the identification results, the proposed method has high accuracy.