摘要
螺旋桨脉动力会产生与轴频、叶频及倍频相关的周期激励信号,在频谱中表现为多个低频窄带线谱。此外,激励幅值、频率及相位会随着轴系转速、油膜润滑等条件的变化而产生未知波动,具有显著的时变特征。该文针对船舶动力系统的时变多谐波线谱振动特征,提出了一种基于参数尺度变换的自适应前馈主动控制方法。基于多跨多支承推进轴系动力学模型,进行了多谐波自适应前馈算法仿真验证,实现了对多个未知窄带干扰的有效衰减。考虑通道耦合响应关系,建立了多输入-多输出系统的多通道振动主动控制策略,开展了多通道交叉耦合谐波振动控制效果分析。结果表明,该文所提出的基于参数尺度变换的自适应前馈主动控制方法对多跨多支承推进轴系的时变多线谱振动具有良好的控制效果。
Propeller pulse force can generate periodic excitation signals related to shaft frequency,blade frequency and their harmonics,they are manifested as multiple low-frequency narrowband line spectra in spectrum.In addition,amplitude,frequency and phase of excitations can have unknown fluctuations with changes of shaft speed,oil film lubrication and other conditions to possess significant time-varying characteristics.Here,an adaptive feedforward active control method based on parametric scale transformation was proposed for the time-varying multi-harmonic tonal vibration characteristics of ship power systems.Based on the dynamic model of multi-span and multi-support propulsion shafting system,simulation verification of multi-harmonic adaptive feedforward algorithm was performed to realize effective attenuation of multiple unknown narrowband interferences.Considering multi-channel coupled response relation,the multi-channel vibration active control strategy for a multi-input multi-output system was established,and the effect analysis of multi-channel cross coupled harmonic vibration control was performed.The results showed that the proposed adaptive feedforward active control method based on parametric scale transformation has good control effect on time-varying multi-tonal vibration of multi-span and multi-support propulsion shafting system.
作者
段宁远
范文焜
宋怡欣
刘博
童宗鹏
华宏星
DUAN Ningyuan;FAN Wenkun;SONG Yixin;LIU Bo;TONG Zongpeng;HUA Hongxing(Shanghai Marine Diesel Engine Research Institute,Shanghai 201108,China;National Key Laboratory of Marine Engine Science and Technology,Shanghai 201108,China;State Key Laboratory of Mechanical System and Vibration,Shanghai Jiao Tong University,Shanghai 200240,China)
出处
《振动与冲击》
EI
CSCD
北大核心
2024年第21期300-309,共10页
Journal of Vibration and Shock
基金
先进船舶发动机技术全国重点实验室资助项目。
关键词
主动控制
前馈控制
自适应算法
线谱振动
尺度变换
active control
feedforward control
adaptive algorithm
tonal vibration
scale transformation
