振动主动控制中加速度信号的积分方法

摘要

In the active vibration control system with velocity feedback control,the velocity signal is obtained by doing numer-ical integration of acceleration signal from acceleration sensor on a digital signal processing system.The velocity signal of the active vibration control system must be required with correct phase.To achieve correct velocity signal,an algorithm to acquire the correct initial phase value was proposed,constant value and the trend of error were eliminated without using digital or analog filter.The ex-periment shows that the algorithm is correct and it can provide correct velocity signal for the velocity feedback active vibration con-trol system.%在采用速度反馈的振动主动控制系统中，利用DSP系统对加速度信号进行时域积分获得速度信号。速度反馈振动主动控制系统采用的速度信号相位必须准确，为获取正确的速度信号，提出了积分初值的确定方法，在不采用滤波的情况下，将积分结果减去其均值实现了直流量和趋势项的去除。在DSP系统中验证了该方法的有效性，积分得到的速度信号的幅度和相位与实际值保持一致。