基于二阶系统阶跃响应辨识传递函数的实验设计  

Experimental Design of Transfer Function Identification Based on Step Response of Second-order System

作　　者：蒋小平[1] 陈晓飞 JIANG Xiao-ping;CHEN Xiao-fei(School ofMechanical Electronic&Information Engineering,China University ofMining&Technology(Beijing),Beijing 100083 China)

机构地区：[1]中国矿业大学(北京)机电与信息工程学院,北京100083

出　　处：《自动化技术与应用》2023年第2期10-13,共4页Techniques of Automation and Applications

基　　金：中央高校基本科研业务费研究生科研创新能力提升项目(2010YJ20)。

摘　　要：二阶系统是经典控制理论课程中的重要环节。传递函数是经典控制理论中设计控制器的基础。论文中设计了一个基于二阶系统阶跃响应的传递函数辨识的matlab实验。分别针对典型二阶欠阻尼系统和过阻尼(含临界阻尼)系统进行传递函数的辨识。其中欠阻尼系统传递函数的辨识采用阶跃响应特征法,过阻尼系统传递函数的辨识采用阶跃响应y-t直线拟合法。设计了具有代表性的实验数据以及实验结果。教学实践表明,该实验在实际教学中具有良好的效果。The second-order system is an important part in the classic control theory course, and transfer function is the basis for designing controllers in classic control theory. This paper designs a matlab experiment based on the identification of the transfer function of the second-order system step response. The experiment identified the transfer functions of typical second-order underdamped systems and overdamped(including critical damped) systems respectively. Among them, the step response characteristics method is used to identify the transfer function of underdamped systems, and the step response y-t Straight line fitting method is used to identify the transfer function of overdamped systems. The representative experimental data and experimental results are designed.Teaching practice shows that the experiment has a good effect in actual teaching.

关 键 词：二阶系统 阶跃响应 传递函数辨识 实验设计 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]