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所属单位：航空学院
发表刊物：IEEE ACCESS
关键字：Helicopter torsional vibration adaptive control predictive control
摘要：In order to damp torsional vibrations in a helicopter, which would cause resonance in rotating components like engine, transmission, and rotor, an adaptive notch filter is proposed. Instead of fixed notch filter, the adaptive one, with FFT analyzer and sorting algorithm, can damp the low-order torsional vibration signal with natural frequency varying in a wide range. Then, in order to enhance the power following capability of the engine, a nonlinear model predictive controller based on the supported vector machine is designed to compensate for the dynamic control performance. Through the adaptive notch filter, the torsional vibration of the free turbine speed whose frequency is away from the set-point value can effectively be suppressed by 50% compared with the fixed notch filter. Furthermore, instead of conventional PID controller, the nonlinear model predictive controller based on the adaptive notch filter can reduce the sag of the free turbine to less than 0.4%. Therefore, the control strategy achieves fast high-quality response of the turbo-shaft engine.
ISSN号：2169-3536
是否译文：否
发表时间：2018-01-01
合写作者：F70206734,郑前钢,张海波,Miao, Lizhen
通讯作者：王永亮