电液伺服系统加速度失真非线性补偿控制策略  

Nonlinear compensation control scheme for acceleration distortion of electro-hydraulic servo system

作　　者：姚建均 吴振顺[1] 韩俊伟[1] 岳东海[1] 

机构地区：[1]哈尔滨工业大学机电工程学院,黑龙江哈尔滨150001

出　　处：《哈尔滨工业大学学报》2005年第8期1116-1118,1122,共4页Journal of Harbin Institute of Technology

摘　　要：分析了电液伺服系统的死区非线性特性及其对系统性能的影响.由于系统死区非线性的存在,正弦信号输入时系统加速度输出中出现高次谐波,使系统加速度输出严重失真,为此提出了基于死区补偿和自适应噪声消除原理等非线性补偿控制策略.仿真分析表明该方法是有效的.Since the dead zone phenomenon occurs in electro-hydraulic servo system, the acceleration output of the system corresponding to a sinusoidal input contains higher harmonics besides the fundamental input, which causes harmonic distortion of the acceleration signal. To get the desired acceleration signal of the system, based on dead zone compensation method and adaptive noise canceling theory, nonlinear compensation control schemes are presented here to cancel the harmonics. Simulation results performed with a hydraulic servo system demonstrate the efficiency and validity of the proposed control scheme.

关 键 词：死区 失真 死区补偿器 自适应噪声消除 非线性补偿控制 

分 类 号：TP271.31[自动化与计算机技术—检测技术与自动化装置]