摘要
针对液压伺服系统中参数时变和外界干扰的特点,通过运用线性分式变换(LFT)得出系统的传递函数,运用线性矩阵不等式(LMI)处理方法,设计出基于H_2/H_∞控制的控制器。利用该控制器不仅可有效地抑制参数时变,而且对外界干扰的影响也有较好的抑制作用。仿真结果表明该控制器是有效的。
Using the linear fractional transformation (LFT) for the system model, the controller was designed based on H2/H∞ control by the method of linear matrix inequalities (LMI) for the uncertain parameter and external disturbance in hydraulic servos. This method can restrain uncertain parameter and external disturbance. The simulation results demonstrate the effectiveness of the proposed method.
出处
《机床与液压》
北大核心
2007年第2期125-126,130,共3页
Machine Tool & Hydraulics