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所属单位：能源与动力学院
发表刊物：Tuijin Jishu
摘要：In order to solve the problem of torsional vibration instability during helicopter maneuvering flight, with analysis of the torque transmission train, the adaptive filter based on least mean square deviation algorithm(LMS)is designed to do torsional vibration dynamic suppression of free turbine and compared with conventional notch filter in the effect of torsional vibration suppression. It is shown that both the notch filter and the adaptive filter based on LMS can eliminate the torsional vibration at the fixed frequency of 1.90Hz in the constant rotor speed, but the latter can reduce the amplitude of torsional vibration to 5% or less, whose filter effect is better than the former. Meanwhile, when the helicopter flies in the variable rotor speed, the low order torsional vibration frequency of the turbo-shaft engine will vary from 1.30Hz to 2.20Hz and the conventional notch filter is no longer applicable, nevertheless, the torsional vibration can still be significantly suppressed by utilizing adaptive filter based on LMS. © 2018, Editorial Department of Journal of Propulsion Technology. All right reserved.
ISSN号：1001-4055
是否译文：否
发表时间：2018-03-01
合写作者：张海波
通讯作者：王永亮