A simple recursive algorithm for frequency estimation
A simple recursive algorithm for frequency estimation
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DOI：
10.1109/tim.2003.822707
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发表时间：
2004-04
影响因子：
5.6
通讯作者：
M. Kušljević
中科院分区：
文献类型：
--
作者：
M. Kušljević
本文提出了一种新的局部系统频率估计数字算法的设计方法。该算法是使用最大似然法。假设一个正弦电压模型。论文中使用的FIR数字滤波器，用来最大限度地减少噪声的影响和消除谐波的影响。该算法显示出非常高的鲁棒性，以及在很宽的频率变化范围内的高测量精度。该算法的收敛性提供了快速的响应和适应性。该技术提供了在约25 ms内误差在0.005 Hz范围内的精确估计，并且需要适度的计算。描述了该技术的理论基础和实际实现。为了证明所开发的算法的性能，计算机模拟数据记录进行处理。
A new approach to the design of a digital algorithm for local system frequency estimation is presented. The algorithm is derived using the maximum likelihood method. One sinusoidal voltage model was assumed. FIR digital filters used in papers, are used to minimize the noise effect and to eliminate the presence of the harmonics effect. The algorithm showed a very high level of robustness as well as high measurement accuracy over a wide range of frequency changes. The algorithm convergence provided fast response and adaptability. This technique provides accurate estimates with error in the range of 0.005 Hz in about 25 ms and requires modest computations. The theoretical basis and practical implementation of the technique are described. To demonstrate the performance of the developed algorithm, computer simulated data records are processed.