摘要
针对电解电容器的参数辨识问题,提出了一种基于有限差分法和递推最小二乘法结合的参数辨识方法。首先对电解电容器的故障模型进行了研究,选取电解电容器的电压和电流作为状态参数,应用有限差分法重新建立电解电容器的离散数学模型,然后结合最小二乘递推算法实现电解电容器特征参数的辨识,最后针对buck-boost变换器进行了电解电容器的参数辨识仿真实验,通过与其他辨识方法的实验结果进行比较,验证了该方法具有算法简单,精度高的特点。
A combined parameter identification method based on the finite difference and reeursive least squares algorithm for electrolytic capacitors is presented in this paper. Firstly, the failure of the electrolytic capacitor mode has been studied. The capacitor voltage and capacitor current are selected as monitoring signals and the discrete mathematical model of the electrolytic capacitor has been reestablished using the finite difference method. Secondly, the recursive least squares algorithm is used to achieve the recognition of the characteristic parameter of the electrolytic capacitors. Finally, the buck-boost converter has been simulated for the parameter identification of electrolytic capacitor. The results are compared with other identification methods to verify that this method has the characteristics of simple algorithm and high accuracy.
出处
《电子测量技术》
2013年第7期36-39,共4页
Electronic Measurement Technology
关键词
电解电容器
参数辨识
有限差分法
最小二乘递推算法
electrolytic capacitor
parameter identification
finite difference method
recursive least squares algorithm
作者简介
贾云涛，1986年出生，毕业于南京航空航天大学，硕士，现北京无线电计量测试所工程师。主要研究方向为电学仪器测试、计量科研等。E-mail：billowingwaves@163．com张建永，1982年出生，毕业于西安电子科技大学，现北京无线电计量测试所工程师。主要研究方向为电学计量测试、电学计量科研等。岳伟，1965年出生，现北京无线电计量测试所工程师。主要研究方向为电学计量测试、电学计量科研等。
