基于扩张状态观测器的可调系统参数辨识与实验  

Parameter identification for adjustable systems based on extended state observer and experimental study

作　　者：聂卓赟[1] 郭东生[1] 刘瑞娟 汤仪平[3] 马亦婧 NIE Zhuo-yun GUO Dong-sheng LIU Rui-juan TANG Yi-ping MA Yi-jing(School of Information Science and Engineering, National Huaqiao University, Xiamen 361012, China School of Applied Mathematics, Xiamen University of Technology, Xiamen 361024, China School of Automation, Liming Vocational University, Quanzhou 362000, China)

机构地区：[1]华侨大学信息科学与工程学院,福建厦门361012 [2]厦门理工学院应用数学学院,福州厦门361024 [3]黎明职业大学自动化学院,福建泉州362000

出　　处：《控制与决策》2017年第10期1905-1909,共5页Control and Decision

基　　金：国家自然科学基金项目(61403149;11626200);福建省自然科学基金项目(2015J01261;2016J05165);华侨大学人才引进项目(Z14Y0002);华侨大学中青年教师科研提升计划项目(ZQN-PY408)

摘　　要：在测量噪声条件下,研究基于扩张状态观测器(ESO)的参数辨识方法和实际应用.结合仿真与实验,分析测量噪声对ESO观测状态输出的影响.为了提高实际应用中的辨识效果,通过引入积分型滤波器对观测状态中的噪声进行抑制.所提出方法可以很好地处理非均匀周期采样数据,适用于不规则采样系统的参数辨识.最后,在一类参数可调实验系统上构造两类实际对象,通过实验验证所提出辨识方法的有效性和实用性.Under the condition of noise measurement, a method of parameter identification based on the extended state observer（ESO） is discussed as well as its application. The influences of measured noise to the states of ESO are analyzed by simulations and experiments. To improve the identification results in the practical systems, an integral filter is introduced to suppress the noise with low contamination to the observed state. This method can well handle the non-uniformly periodically sampled data, and can be applied to identify parameters of irregular sampling system. Finally, two kinds of practical processes are realized in an adjustable experiment system, and the effectiveness of the proposed method is validated via two experiments.

关 键 词：可调实验系统 系统辨识 扩张状态观测器 积分滤波 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]