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.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2005年第8期1116-1118,1122,共4页
Journal of Harbin Institute of Technology
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
dead-zone
distortion
dead-zone compensator
adaptive noise canceling
nonlinear compensation control
