基于中心誤差熵準(zhǔn)則的非高斯系統(tǒng)濾波器設(shè)計(jì)
[Abstract]:In view of the fact that the existing minimum entropy filtering theory has translation invariance, the filtering method based on the minimum entropy criterion can only ensure that the randomness of the estimation error is as small as possible, but it cannot ensure its convergence to zero. Based on the central error entropy criterion, the problem of filter design for a class of linear non-Gaussian systems is studied. In the framework of minimum entropy criterion, the design method of filter gain matrix is given by using non-parametric estimation theory and gradient descent method, and the mean square stability of filtering error system is analyzed. Then a new central error entropy criterion is proposed, which is composed of the weighted sum of information potential and mutual entropy, and maximizes the information potential to realize the global minimization of the randomness of estimation error. The maximum mutual entropy can fix the peak value of the error probability density function to zero, so that the filtering error can be as small as possible. Finally, numerical examples are used to simulate the minimum entropy filter and the maximum central error entropy filter respectively. The results show that the filtering algorithm based on the central error entropy criterion has better performance.
【作者單位】: 太原理工大學(xué)信息工程學(xué)院;
【基金】:國(guó)家自然科學(xué)基金(61503271) 山西省自然科學(xué)基金(20140210022-7)
【分類號(hào)】:TN713
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