引用本文:李军,朱亚清,陈文,万文军,陈世和,胡康涛,苏凯,李锋.一种新型正弦跟踪微分器的研究与应用[J].控制理论与应用,2016,33(9):1182~1192.[点击复制]
LI Jun,ZHU Ya-Qing,CHEN Wen,WAN Wen-Jun,CHEN Shi-He,HU Kang-Tao,SU Kai,LI Feng.Research and application of a new type of sinusoid tracking differentiator[J].Control Theory and Technology,2016,33(9):1182~1192.[点击复制]
一种新型正弦跟踪微分器的研究与应用
Research and application of a new type of sinusoid tracking differentiator
摘要点击 3784  全文点击 1898  投稿时间：2016-02-20  修订日期：2016-05-25
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DOI编号  10.7641/CTA.2016.60089
  2016,33(9):1182-1192
中文关键词  正弦跟踪微分器  正弦滤波器  微分信号  阶跃函数激励  斜坡函数激励
英文关键词  sinusoid tracking differentiator  sinusoid filter  differential signal  step function excitation  slope function excitation
基金项目  国家自然科学基金项目(61473183)资助.
作者单位E-mail
李军* 广东电网有限责任公司电力科学研究院 lijun_87389@163.com 
朱亚清 广东电网有限责任公司电力科学研究院  
陈文 广东电网有限责任公司电力科学研究院  
万文军 广东电网有限责任公司电力科学研究院  
陈世和 广东电网有限责任公司电力科学研究院  
胡康涛 广东电网有限责任公司电力科学研究院  
苏凯 广东电网有限责任公司电力科学研究院  
李锋 广东电网有限责任公司电力科学研究院  
中文摘要
      过程信号的微分计算在控制工程领域有广泛的应用, 但经典微分运算方法存在显著的噪声干扰放大效应. 文中通过分析一种经典微分器的变形结构以及对象阶跃激励响应和斜坡激励响应的正弦滤波信号成分的构成, 指 出在较高的滤波频率下, 可通过信号的正弦滤波或余弦滤波提取这些过程信号的微分信号. 提出了一种由正弦滤波 器和新型正弦跟踪器所构成的新型微分信号提取方法. 该方法有效提高了提取微分信号的质量, 与理想微分信号 相比的近似度较高. 文中提出的微分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结果进一步证实了 文中所述方法的正确性和有效性.
英文摘要
      Differential elements of the process signals are being widely applied in the field of control engineering, but the noise was significantly amplified by this traditional differential signal extraction method. By analyzing a deformation structure of traditional differential signal extractor and the composition of responses under step and slope incentives of the process signals, the differential signal can be extracted by sine or cosine filter signal under high frequency filtering conditions. Based on this result, a new differential extraction method composed of a sinusoid filter and a new sinusoid tracking coordinates was proposed. The quality of differential signal extracted by this method was improved dramatically with high proximity to ideal differential signal. Superior anti-noise characteristics could be obtained with the method proposed in this paper, which is the development and extension of linear filters, and has good theoretical significances and practical application prospects. The new signal processing method is a beneficial supplement to the classic control theory. Mathematical analysis, simulation experiment, and practical application results provide further evidence that the new method is correct and valid.