时滞加速度反馈的振动主动控制方法研究评述与进展

Advances and review on the research of the time-delayed acceleration feedback control

目前,在振动主动控制中加速度传感器的广泛应用使得所测信号多为加速度信号,但由于数值积分存在的累积误差和控制系统中的时滞因素的影响,使得由加速度信号经数值积分后获得的速度或位移偏差较大,在一定程度上限制了速度反馈或位移-速度反馈控制策略在振动主动控制中的应用。因此,研究时滞加速度反馈控制尤为重要。本文从中立型时滞微分方程动力学分析与状态空间中的状态导数反馈两个角度系统阐述了时滞加速度反馈控制器设计的主要方法,并概述了两种方法设计时滞加速度反馈控制的优缺点,重点关注了时滞加速度反馈控制已经解决的实际振动主动控制问题,提出了基于时滞加速度反馈的振动主动控制方法中需要关注和未解决的关键问题。

Due to the widely use of acceleration sensors in vibration active control, the accumulated errors of numerical integration of acceleration signals to obtain velocity or displacement and the time delay of filters will become very large, so the study of the time-delayed acceleration feedback control becomes hot in active vibration control system recently. Two major design methods of the time-delayed acceleration feedback controller are described, one is the dynamic analysis of the neutral time-delayed differential equations, and another is the state-derivative feedback control in state-space. The advantages and disadvantages of above two design methods are presented in the process of designing the time-delayed acceleration feedback controller. The use of acceleration feedback control in vibration control of engineering and the solved application problems of active vibration control by the time-delayed acceleration feedback controller are emphasized. Finally, some advices on the research of the time-delayed acceleration feedback controller in the future are proposed.