用辨识的方法确定伺服阀的数学模型  

Identification of Dynamic Mathematical Model in Electro-hydraulic Servovalve

作　　者：花克勤[1] 

机构地区：[1]上海应用技术学院,上海200235

出　　处：《机床与液压》2004年第1期87-91,共5页Machine Tool & Hydraulics

摘　　要：本文采用三种输入信号 (正弦、脉冲、伪随机信号 )对国产QDY型电液伺服阀进行试验 ,再应用系统辨识的理论和方法求出其动态数学模型 。A practice that tests the QDY native electro-hydraulic servovalve by means of three input signals(sinusoidal, pulse,pseudo-random) is introduced, the dynamic mathematical model is determined according to the theory of system identification. Moreover, the performances of three methods of identification are compared and a better researching result is obtained.

关 键 词：数学模型 正弦信号 脉冲信号 伪随机信号 电液伺服阀 系统辨识 

分 类 号：TH137.52[机械工程—机械制造及自动化] TP271.31[自动化与计算机技术—检测技术与自动化装置]