改进汉明Burg和稳健支持向量机的间谐波检测Modified Hamming Weighted Burg and Robust Support Vector Machine Algorithm for Inter-harmonics Detection
崔晓荣;王军;林莉;孙章;田攀;
摘要(Abstract):
间谐波具有非线性、随机性及非平稳性等特点,在实时检测中具有一定困难。为精确检测出所含间谐波分量,文中先利用改进汉明Burg算法检测间谐波的频率,该算法按二阶预测误差输出功率最小原则求解一、二阶系数,求高阶系数时进行汉明加权,选取阶次时引入控制参数;再用稳健支持向量机法校正检测出的频率分量,并获得其幅值和相位。仿真结果表明,该算法检测频率时,减弱了谱峰偏移度且不易出现谱线分裂,低信噪比时不会出现谱峰消失现象,提高了频率检测精度;用稳健支持向量机法校正频率可精确得出间谐波的频率、幅值和相位,且计算量小。
关键词(KeyWords): 间谐波;自回归模型;伯格算法;汉明加权;稳健支持向量机
基金项目(Foundation): 四川省重点学科基金资助项目(SZD0503-09-0);; 西华大学创新基金资助项目(ycjj201290);; 四川省教育厅成果培训基金资助项目(12ZZ007);; 2011年科技部中小企业国际合作资助项目(SQ2011ZOF000004)
作者(Authors): 崔晓荣;王军;林莉;孙章;田攀;
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