基于一种滤波-误差算法的主动隔振技术

A technology research on active isolation system with a filtered-error algorithm

针对船载动力机械隔振降噪问题,本文将多通道的滤波-误差信号主动控制算法应用于主动隔振系统,采用子结构导纳方法建立基于导纳矩阵的双层隔振系统主动控制的次级通道模型。在一种改进的滤波-误差信号算法的基础上,利用实验得到的双层隔振系统的次级通道辨识数据构建出新的误差滤波器,并进行主动控制算法仿真。仿真结果表明,通过合理的构建误差滤波器,采用改进的滤波-误差信号主动控制算法的主动隔振系统对于周期激励具有较好的隔振效果。

To solve vibration isolation of engines installed on the flexible decks of ships or vessels, the filtered-error algorithm for multichannel active control systems of vibrations is used in this paper. The sub-system mobility technique was employed to establish the secondary path model of a two-stage isolation system based on mobility matrixes. The simulations used a novel filtered-error algorithm construct new error filters based on the data obtained from the experiments. The results of simulation show that for a multichannel active isolation system the novel algorithm is effective for multichannel control of tonal disturbances by choosing right error filters.