电液流量伺服阀模型的两种辨识方法

根据力反馈电液伺服阀的频率响应实测数据，来辨识该伺服闭的频率特性，从而建立其动力学模型．本文提出两种辨识方法；其一，通过控制理论频域分析来确定传递函数；其二，采用Ｌｅｖｙ法进行模型辨识．在此基础上，对二者所得结果进行了归一化类比．

Two Methods Identificating the Model of Electrohydraulic Flow Servo Valve

According to the really measured data of frequency response of electrohydraulic nowservo valve with pressure feedback, we can identincate the valve' s transfer characteristics,then build up the dynamic model. This paper presents two identification methods. one is usins frequency analysis to establish the transfer function, the other is using Levy-methods to identificate the model. On this base, analogy between the two results has been fulfilled.