%0 Journal Article
%T 信号重构的变转速液压系统恒压控制性能研究<br>Exploring Constant Pressure Control Performance for Variable Speed Hydraulic System based on Signal Reconstruction
%A 杨彬
%A 谷立臣
%A 陈萌
%A 吴振松
%A 刘永
%J 机械科学与技术
%D 2016
%X 为消除干扰信号对于变转速液压系统恒压控制性能的影响，提高系统的控制精度，对压力反馈信号进行了预处理。利用多分辨率分析分解反馈信号、剥离干扰信号成份，重构信号。采用LabVIEW与MATLAB软件混合编程的方法，设计了压力信号重构的变转速恒压测控系统。通过实验对比分析了在PID控制系统中添加信号重构器前后对控制性能的影响。实验表明：对压力反馈信号进行分解与重构，能够在保持系统响应速度的基础上，减小恒压系统的稳态误差，降低压力波动，提高控制精度。<br>In order to eliminate the influence of interference signal on constant pressure control performance of a variable speed hydraulic system and improve its control accuracy, pressure feedback signal is preprocessed and reconstructed by using multi-resolution analysis to decompose the signal and strip interference signal components. The constant pressure measurement and control of variable speed hydraulic system based on signal reconstruction is designed by adopting the LabVIEW and MATLAB hybrid programming method. The impact before and after adding control signal reconstruction device performance in a PID control system is analyzed through comparative experiments. Experimental results show that, in addition to keeping the system's response speed, the pressure feedback signal decomposition and reconstruction can reduce steady-state errors of the constant pressure system and pressure fluctuation, thus improving control accuracy
%K 变转速液压系统
%K 小波分析
%K 压力信号重构
%K 混合编程
%K 恒压控制&lt
%K br&gt
%K variable speed hydraulic system
%K wavelet analysis
%K pressure signal reconstruction
%K hybrid programming
%K constant pressure control
%U http://journals.nwpu.edu.cn/jxkxyjs/CN/abstract/abstract6442.shtml