电气传动设备低频-前馈复合控制技术

Low Frequency Feedforward Compound Control Technology for Electric Drive Equipment

为减小电气传动设备高频信号扰动的影响,降低设备控制负担,优化高频扰动控制效果,研究综合能源接入下电气传动设备低频前馈复合控制技术。利用传感器采集扰动信号,建立电气传动设备有限分析元模型,得出电气传动设备作业振幅及扰动信号幅频间关系,预测电气传动设备外部声场,校正误差信号,以基础函数估计扰动信号频域,通过隔声腔物理阻隔扰动信号传播、利用优化后前馈控制系统抑制高频扰动,实现电气传动设备低频前馈复合控制。算例分析结果表明,所提技术不受电气传动设备作业角度限制,各角度下的吸声系数皆较高,低频前馈复合控制效果很好,适用性强。

In order to reduce the influence of highfrequency signal disturbance of electrical transmission equipment,reduce the burden of equipment control and optimize the control effect of highfrequency disturbance,the lowfrequency feedforward composite control technology of electrical transmission equipment under comprehensive energy access is studied.The sensor is used to collect the disturbance signal,establish the finite element analysis model of the electrical transmission equipment,obtain the relationship between the operating amplitude of the electrical transmission equipment and the amplitude frequency of the disturbance signal,predict the external sound field of the electrical transmission equipment,correct the error signal,estimate the frequency domain of the disturbance signal with the basic function,and physically block the propagation of the disturbance signal through the sound insulation cavity.The optimized feedforward control system is used to suppress the highfrequency disturbance and realize the lowfrequency feedforward compound control of electrical transmission equipment.The results of example analysis show that the proposed technology is not limited by the operation angle of electrical transmission equipment,the sound absorption coefficient at each angle is high,the lowfrequency feedforward composite control effect is very good and has strong applicability.