摘要
本文提出一种称为误差校正法的估计传递函数参数的方法,建立了目标函数与传递函数参数及其最小二乘估值偏差间的函数关系,在完成最小二乘估计的基础上,通过连续修正,使传递函数估值精度得到提高,算例表明,该法比普通最小二乘法和广义最小二乘法的精度高,而且,比广义最小二乘法收敛得快。
This paper presents an algorithm which is called error-correction method for estimating the parameters of system transfer function, The relation between cost function and transfer function parameters and their estimation errors is defined at first. Then the formula of the erros of estimated parameters is deduced with least squares estimation. The estimation precision of transfer function parameters can be improved by succesive correction A computational example indicates that the error-correction method is better than LS methos and GLS method as far as the precision of estimation is concerned. Moreover, its converqence rate is obviously higher than that of GLS method.
出处
《控制理论与应用》
EI
CAS
CSCD
北大核心
1990年第3期12-18,共7页
Control Theory & Applications
基金
国家自然科学基金
航天科学基金
关键词
传递函数
参数
误差校正
控制论
parameter estimation
transfer function
error-correction
