阀控非对称缸电液伺服系统的线性鲁棒观测器设计  

Linear robust observer design for electro-hydraulic valve-controlled single rod cylinder servo system

作　　者：明廷涛[1,2] 张永祥[1] 沈健春 姚晓山[1] 

机构地区：[1]海军工程大学船舶与动力学院,武汉430033 [2]海军上海地区装备修理监修室,上海200136

出　　处：《农业工程学报》2010年第1期182-187,共6页Transactions of the Chinese Society of Agricultural Engineering

基　　金：中国人民解放军装备维修科学研究与改革项目(2006A623)

摘　　要：为了更为有效地诊断电液伺服控制系统的故障,设计良好的状态观测器是至关重要的前提。针对阀控非对称缸电液伺服系统,提出一种线性鲁棒观测器的设计方法。在考虑建模误差、参数变化、外力干扰、过程噪声以及测量噪声等影响因素的前提下,将系统非线性模型进行线性化,并据此设计系统的线性鲁棒观测器。仿真结果表明:小负荷情况下,该文设计的线性观测器具有一定的鲁棒性。In order to detect faults of electro-hydraulic servo system effectively,it is important to design an ascendant observer beforehand.This paper presents a method of linear robust observer design for electro-hydraulic valve-controlled single rod cylinder servo system.Firstly,the nonlinear model is applied in this study.Secondly,the linear modeling process is recapped by highlighting the likely uncertainties which influence the implementation of model-based approaches.Finally,the linear robust observer is designed in the presence of unknown inputs,such as model errors,parameters fluctuation,force disturbance,process noise,measurement noise.Case simulation under light running reveals that this observer is being of some robustness.

关 键 词：非线性模型 伺服系统 阀控非对称缸 线性鲁棒观测器 

分 类 号：TP271.31[自动化与计算机技术—检测技术与自动化装置] TP271.7[自动化与计算机技术—控制科学与工程]