摘要
本工作利用系统的脉冲响应观测数据,提出了辨识一阶系统、二阶系统传递函数参数的两点法、三点法等,以及确定传递函数参数的差分方程法和面积法。所提出的方法能够避免直接求解超越方程,且原理简单,实现方便。
By means of the system impulse response data,this paper presents two-point methods and three-point methods for identifying the parameters of first-order systems and second-order systems,which are described by transfer functions,and presents the difference equation method and the area method for identifying transfer functions.The proposed algebraic methods of determining the parameters of the transfer functions have simple mechanism and ease to understand,and avoid solving some transcendental equations.
出处
《青岛科技大学学报(自然科学版)》
CAS
2018年第2期1-15,共15页
Journal of Qingdao University of Science and Technology:Natural Science Edition
基金
国家自然科学基金项目(61472195)
关键词
传递函数
参数估计
系统辨识
阶跃响应
脉冲响应
transfer function
parameter estimation
system identification
step response
impulse response