摘要
本文建立了架空输电线防振锤的非线性模型，对刚度系数阻尼系数，给出了非线性参数识别方法，用幂级数展开的形式，将非线性模型转换为线性模型。用误差平方和构造了评价函数。利用灵敏度矩阵判断出变量的优选项。根据评价函数最小，应用无约束最优化方法识别出各变量优选项的数值。通过ＦＤＨ－５Ｚ防振锤的实验表明该方法是正确的，符合工程要求。
In this paper the nonlinear model for dampers used in transmission lines was estabilished and the identification methods were given for stiffness coefficient and damping factor. Nonlinear model was converted to linear identification model using power series expansion. Evaluation function was constructed using a sum of squares of errors. Preferred items can be choosed with sensitivity matrix,so the amount of calculation is reduced. According minimization of evaluation function and the nonrestrained optimum method,the values of each preferred item can be identified. The experiment on FDH-5Z shows that this method is correct.it can meet engineering requirement.
出处
《中国电机工程学报》
EI
CSCD
北大核心
1996年第2期142-144,共3页
Proceedings of the CSEE
基金
电力部重点科技项目
关键词
防振锤
非线性方程
参数识别
振动
输电线路
damper
nonlinear equation
component
identification
vibration of the conductor
transmissionlines
