舰船动力设备系统产生的持续低频振动会严重影响舰船的声隐身性能及舰船精密设备的工作性能。以自主设计研制的电磁主动吸振器为对象，为了匹配电磁主动吸振器的实际使用工况，在滤波-x最小均方(Filter-x Least Mean Square，FxLMS)控制算法中引入抑制因子，对主动控制力的输出进行限幅。首先通过数值仿真分析验证匹配优化后的控制算法对振动控制的抑制效果，然后介绍基于电磁主动吸振器工程样机搭建的主动控制实验台架系统，以单频激励工况为基础开展主动控制效果验证实验，证明电磁吸振器与匹配优化后的控制算法对低频机械振动控制的有效性。数值仿真和实验结果表明，针对自主设计研制的电磁主动吸振器而提出的匹配优化主动控制算法能够有效抑制低频机械振动响应，在时域和频域均可以取得显著的振动控制效果。
Study on Vibration Control Method Optimization of Electromagnetic Active Vibration Absorbers
The continuous low-frequency vibration generated by warship power equipment has adverse effects on underwater acoustic stealth and target identification as well as working performance of precision equipment of warships.In this paper,active vibration control effect of a self-designed and manufactured electromagnetic active vibration absorber was studied.Firstly,the suppression factor was introduced into the Filter-x Least Mean Square(FxLMS)active control algorithm for matching the actual control force amplitude output of the absorber.Then,numerical simulation was conducted to evaluate the active control effect of the algorithm.Finally,the active control experimental platform based on the engineering prototype of electromagnetic active vibration absorber was set up and experimental studies were carried out.Both the numerical simulation and experimental results indicated that proposed active control algorithm in this paper can effectively suppress structural vibration in both time domain and low frequency domain.
vibration and waveelectromagnetic active vibration absorberFxLMS algorithmactive vibration controlactive control experiment
万方数据
维普
