基于信号微分滑模控制的电液伺服激振器  

Electro-hydraulic Servo Vibration Exciter Based on Signal Differential Sliding Mode Control

作　　者：隋秀凛[1] 陈彬[1] 黄山云[2] 王宇 

机构地区：[1]哈尔滨理工大学机械动力工程学院,黑龙江哈尔滨150080 [2]哈尔滨工业大学机电工程学院,黑龙江哈尔滨150006

出　　处：《液压与气动》2016年第1期118-121,共4页Chinese Hydraulics & Pneumatics

摘　　要：设计了一种基于信号微分滑模控制理论的阀控非对称缸激振器。通过对液压缸位移信号提取并对其进行微分运算求导,以此来实现无需速度和加速度的滑模控制,削弱了系统非线性对控制精度的影响,增大了电液伺服激振器的激励频率带宽。根据Lyapunov函数判据,确保了系统的稳定性。通过对对称阀控非对称缸系统的位置跟踪控制进行仿真分析,结果显示,该激振器具有良好的跟踪效果。A valve controlled asymmetric cylinder excited device based on the sliding mode control theory is designed. The exciter through the hydraulic cylinder displacement signal extraction and the of the differential operation, in order to achieve without velocity and acceleration of the sliding mode control. The influence of the system nonlinearity on the control accuracy is reduced, and the excitation frequency bandwidth of the electro hydraulic servo exciter is increased. According to Lyapunov function criterion, the stability of the system is ensured. This paper of symmetrical valve controlled asymmetric cylinder system tracking control simulation analysis. The results show that the vibration exciter has good tracking performance and frequency bandwidth.

关 键 词：阀控非对称缸激振器 位移信号 微分运算 滑模控制 LYAPUNOV函数 

分 类 号：TH137[机械工程—机械制造及自动化] TP273[自动化与计算机技术—检测技术与自动化装置]