Maximum likelihood least squares identification for systems with autoregressive moving average noise

Maximum likelihood least squares identification for systems with autoregressive moving average noise
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具有自回归移动平均噪声的系统的最大似然最小二乘识别

DOI:
10.1016/j.apm.2011.07.083
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发表时间:
2012-05
影响因子:
5
通讯作者:
Jiyang Dai
Jiyang Dai
中科院分区:
工程技术2区
文献类型:
--
作者:
Wei Wang;Feng Ding;Jiyang Dai

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极大似然法是系统建模和参数估计的重要方法。本文基于极大似然原理,导出了带自回归滑动平均噪声系统的递推极大似然最小二乘辨识算法。在这个推导中,我们证明了似然函数的最大值等价于最小化最小二乘成本函数。该算法不同于相应的广义扩展最小二乘算法。仿真试验表明,该算法比递推广义扩展最小二乘算法具有更高的估计精度。
Maximum likelihood methods are important for system modeling and parameter estimation. This paper derives a recursive maximum likelihood least squares identification algorithm for systems with autoregressive moving average noises, based on the maximum likelihood principle. In this derivation, we prove that the maximum of the likelihood function is equivalent to minimizing the least squares cost function. The proposed algorithm is different from the corresponding generalized extended least squares algorithm. The simulation test shows that the proposed algorithm has a higher estimation accuracy than the recursive generalized extended least squares algorithm.
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