阀控非对称缸电液伺服控制系统的故障仿真研究  

Simulation for Fault Diagnosis of Electro-hydraulic Single Rod Cylinder Servo-Controlling System

作　　者：张友荣[1] 姚晓山[1,2] 明廷涛[2] 

机构地区：[1]空军雷达学院军械通用装备系,武汉430019 [2]海军工程大学船舶与动力学院,武汉430033

出　　处：《武汉理工大学学报（交通科学与工程版）》2010年第6期1227-1231,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

摘　　要：研究了基于Matlab/Simulink软件的非对称缸电液伺服控制系统的故障仿真技术.考虑系统的固有非线性和伺服阀、非对称缸的动态非线性,建立了系统的非线性数学模型,仿真计算了系统正常状态下的位移、速度、压力、流量变化曲线.以液压缸的内泄漏故障为例,仿真计算了正常、轻度、中度、重度故障条件下的位移、速度变化曲线,比较确定了故障特征,预测了故障发展趋势.A method of fault simulation was proposed for electro-hydraulic single rod cylinder servo-controlling system.The mathematic model was designed,involving inherent nonlinear characteristics of system and dynamic nonlinearity of servo-valve and single rod cylinder.The normal variety curves of displacement,velocity,pressure and flow were simulated.Taking the inner leakage of cylinder for example,the displacement and velocity of normal,low-grade,middle-grade and high-grade leakage were figured out.The fault character was discovered and the evolution trend was forecasted.

关 键 词：电液伺服控制系统 阀控非对称缸 非线性 SIMULINK 故障诊断 仿真 

分 类 号：TP137.9[自动化与计算机技术—控制理论与控制工程]