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An Adaptive Measuring Method for Frequency Signal
Author(s): 
Pages: 263-270
Year: Issue:  11
Journal: Transactions of China Electrotechnical Society

Keyword:  自适应性 渐近稳定性 参数因子 灵敏性 稳定性;
Abstract: 提出了一种频率信号测量的自适应算法。采用梯度下降法构建算法模型,依据李亚普诺夫稳定性定理对该算法在待测信号非稳定条件下的渐近稳定性进行证明。分析算法中参数因子取值大小对算法性能的影响,采用动态调节策略修正参数因子,以确保该算法在输入信号稳定条件下能准确收敛到待测频率分量,有效抑制其他频率分量及噪声的干扰;在输入信号非稳定条件下,该算法能快速做出反应,迅速收敛到待测频率分量的新状态。理论分析和仿真结果均证实了该算法的正确性和有效性。
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