电液伺服系统非线性不确定模型的线性化方法  

Linearizing Methods of Nonlinear Uncertainty Model of Electro-hydraulic Servo System

作　　者：杨军宏[1] 李圣怡[1] 陈浩锋[1] 戴一帆[1] 

机构地区：[1]国防科学技术大学机电工程与自动化学院,长沙410073

出　　处：《机床与液压》2007年第4期165-169,173,共6页Machine Tool & Hydraulics

基　　金：国防预研项目基金资助项目(413180802)

摘　　要：详细分析和总结了目前国内外关于定量反馈理论(QFT)的文献中建立不确定性模型的方法。在此基础上,提出了三种获得系统不确定模型的思路:基于简单的闭环比例控制建立不确定模型、基于非线性数学建模建立不确定模型、基于神经网络辨识建立不确定模型,并以阀控非对称缸液压伺服系统为研究对象举例进行了阐述。此外还分别指出了这三种方法的优缺点。该研究为QFT的进一步工程应用奠定了很好的基础。The process of determining uncertainty model in the domestic and oversea literatures on quantitative feedback theory （QFT） was analyzed and summarized. Three ways were presented to derive the system＇s uncertainty model, they are based on the simple closed loop proportion control, based on the nonlinear mathematical modeling, and based on the neural network identifying. And as an example, the uncertainty model of the valve controlled asymmetry cylinder hydraulic servo system was determined separately by the first two ways. The advantages and disadvantages of the three ways were concluded. This research presented a good basis for going deep to promote the QFT＇s practical application in project.

关 键 词：定量反馈控制 不确定性模型 阀控非对称缸 液压伺服系统 

分 类 号：TH137[机械工程—机械制造及自动化]