飞机液压系统压力检测仪的SVM建模研究  

Research on the SVM based modeling method for detection equipment about hydraulic pressure of aircraft

作　　者：戴洪德[1] 吴光彬[1] 吴晓男[1] 卢建华[1] 

机构地区：[1]海军航空工程学院控制工程系,山东烟台264001

出　　处：《深圳大学学报（理工版）》2013年第3期275-279,共5页Journal of Shenzhen University(Science and Engineering)

基　　金：国防预研基金资助项目(51309060401)~~

摘　　要：针对飞机液压系统检测仪建模中,待测压力和检测仪输出电信号间存在较强的非线性关系,使用最小二乘法需预先确定模型结构,给实用造成一定困难的问题,采用支持向量机强大的非线性回归功能,以标准液压源提供的压力输入及检测设备的电信号输出作为支持向量机的学习样本对,完成支持向量机的训练,得到液压检测仪的数学模型.实际液压系统实验结果表明,该方法能建立准确的输入输出关系,具有较好的实用价值.In order to display the corresponding value of hydraulic pressure based on the voltage of the hydraulic sensor＇s output, modeling of detection equipment for hydraulic pressure of aircraft is needed. There exists strong nonlinearity between the pressure to be measured and the output of electrical signal in theory. Although the least square method can be used for the modeling of the input-output, the style of the model must be ascertained in ad- vance. A support vector machine with strong nonlinear regression capacity was applied to this modeling problem. The pressure provided by standard pressure source, and the electrical signal output of the detection equipment were employed as the study sample of the support vector machine. Training by the support vector machine, the mathematical model of the detection equipment was built. Experiment results of a real hydraulic pressure system show that, support vector machine can establish the relationship between the input and output exactly and has great value of practical application.

关 键 词：检测 液压 飞机 非线性 最小二乘支持向量机 建模 

分 类 号：TJ81[兵器科学与技术—武器系统与运用工程] V245[航空宇航科学与技术—飞行器设计]