论文部分内容阅读
面向航空航天器挠性结构振动主动控制研究背景,针对FXLMS控制算法无法直接从振动结构提取参考信号的缺陷,以经过传感器作动器优化配置的压电机敏柔性梁为模型结构,研究了一种基于多通道FULMS算法的结构振动主动控制器.针对参考信号取自激振信号和直接取自振动结构两种情况,对FXLMS控制算法及FULMS控制算法进行了仿真分析与验证;结果表明FXLMS算法高度依赖参考信号选取,FULMS算法相对FXLMS算法具有更好的收敛性,且能够实现参考信号直接提取策略.在此基础上构建了测控系统和实验平台,进行基于多通道FULMS控制算法的压电柔性结构振动主动控制实验,验证了参考信号从振动结构中直接提取策略的可行性与多通道FULMS控制算法的有效性.
In view of the research background of active vibration control of flexible structures in aerospace vehicles, aiming at the defects that FXLMS control algorithm can not extract reference signals directly from vibration structure, a piezoelectric flexible beam with optimal configuration of sensor actuator is taken as a model structure. The active vibration controller based on multi-channel FULMS algorithm is used to simulate the FXLMS control algorithm and the FULMS control algorithm. The results show that the height of the FXLMS algorithm Depending on the reference signal selection, the FULMS algorithm has better convergence compared with the FXLMS algorithm, and can directly extract the reference signal strategy.On the basis of this, the measurement and control system and the experimental platform are built, and the piezoelectric flexible structure based on multi-channel FULMS control algorithm Vibration active control experiment verifies the feasibility of extracting the reference signal directly from the vibration structure and the effectiveness of the multi-channel FULMS control algorithm.