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|本期目录/Table of Contents|

基于中心差分扩展卡尔曼滤波的电源频率估计

《探测与控制学报》[ISSN:1008-1194/CN:61-1316/TJ]

期数:
2010年03期
页码:
31
栏目:
出版日期:
2010-06-26

文章信息/Info

Title:
Fundamental Frequency Estimation of Power Supply Based on Central Difference Extended Kalman Fiter
文章编号:
1008-1194(2010)03-0031-04
作者:
付巍; 朱岩; 付军立; 侯毅
中国航空工业集团公司北京长城测试计量技术研究所，北京100095
Author(s):
FU Wei; ZHU Yan; FU Junli; HOU Yi
Aviation Industry Corporation of China,Changcheng Institute of Metrology & Measurement,Beijing 100095,China
关键词:
飞机供电系统; 中心差分扩展卡尔曼滤波算法; 频率估计
Keywords:
aircraft power system; central differenc extended kalman filter; frequency estimation
分类号:
TN911.23
DOI:
.
文献标识码:
A
摘要:
针对扩展卡尔曼滤波算法（EKF）和无迹卡尔曼滤波算法（UKF）在处理飞机供电系统的交流电压频率估计方面所表现出的估计精度和实时性问题，提出了一种采用中心差分计算EKF中非线性函数一阶导数的基于中心差分扩展卡尔曼滤波（CDEKF）算法。理论分析和仿真表明：CDEKF虽然计算时间比EKF稍有增加，但比UKF的计算时间少，而计算精度比EKF有显著提高，与UKF的计算精度相当。
Abstract:
Aiming at the problems of the estimation accuracy and real-time performance which consisted in the frequency estimation of aircraft AC power supply system by either extended kalmanfilter (EKF) or unscented kalman filter(UKF),an improved central difference extended kalman filter(CDEKF) was presented in this paper.This algorithm used the central difference formula to calculate the first-order derivative of EKF nonlinear function.Theoretical analysis and simulation experiment showed that,compared with EKF and UKF,although calculation time of CDEKF is slightly longer than that of EKF,it was less than that of UKF.Moreover,the accuracy of CDEKF was significantly higher than that of EKF,and was nearly the same with that of UKF.

参考文献/References

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备注/Memo

备注/Memo:
*收稿日期：2010-02-10    修回日期：2010-03-19
基金项目：山西省青年自然科学基金项目资助（2009021022-2）
作者简介：付巍(1979-)，男，山西太原人，博士，工程师，研究方向：动态测试技术及仪器。E-mail：fwchina413@tom.com。
更新日期/Last Update: 2010-07-13