一种基于点频滤波器的微分信号提取方法

发布时间：2018-05-21 15:11

本文选题：阶跃函数激励 + 正弦函数激励　；参考：《自动化学报》2017年03期

【摘要】：针对经典微分方法存在显著的干扰放大效应和非线性微分方法的不足,提出了一种新型线性微分方法.文中分析了对象阶跃激励响应和正弦激励响应的内在关联.指出了在一定的条件下,可通过对象的正弦激励响应获取对象阶跃激励响应的微分信号.并给出了一种点频滤波器能够实现阶跃激励到正弦激励的转换方法.进而由点频滤波器和一种新型正弦跟踪滤波器等构建了一种新型微分信号提取的逻辑回路结构.文中提出的方法具有良好的抗噪声干扰特性,是线性滤波技术的发展与延伸,并具有良好的理论意义和实际应用前景,可作为经典控制理论的有益补充.数学分析、仿真实验和实际应用的结果进一步证实了文中所述方法的正确性和有效性.
[Abstract]:A new linear differential method is proposed to overcome the obvious interference amplification effect and the shortage of nonlinear differential method in classical differential method. The relationship between step excitation response and sinusoidal excitation response is analyzed in this paper. It is pointed out that under certain conditions, the differential signals of the object's step excitation response can be obtained by the sinusoidal excitation response of the object. A conversion method from step excitation to sinusoidal excitation by point frequency filter is also presented. Then a new logic loop structure of differential signal extraction is constructed by using point frequency filter and a new sinusoidal tracking filter. The proposed method has good anti-noise characteristics, is the development and extension of linear filtering technology, and has good theoretical significance and practical application prospects, and can be used as a useful supplement to the classical control theory. The results of mathematical analysis, simulation and practical application further verify the correctness and effectiveness of the proposed method.
【作者单位】：广东电网有限责任公司电力科学研究院;
【基金】：国家自然科学基金(61473183)资助~~
【分类号】：TN713

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