基于LMI的永磁同步伺服电机的混合H2/H∞鲁棒预测控制器

Direct Torque Control of Permanent Magnet Motor Based on Second Order Sliding Mode Algorithm

针对永磁同步伺服电机易受负载扰动及自身参数变化影响的特点,基于线性矩阵不等式(linear matrix inequality,LMI),提出了一种针对永磁同步伺服电机的混合H 2/H∞鲁棒预测控制器设计方法。该控制器在保证永磁同步伺服电机控制系统在负载突然变化时起到抑制作用,既保证了系统的快速响应和稳定性,同时还使该系统对外界以及自身扰动具有较好的鲁棒性。并且,在Matlab/Simulink中进行仿真研究,并且与传统的PI调节器相比较,证明了该控制器的可行性。

Aiming at the characteristics of permanent magnet synchronous servo motor susceptible to load disturbance and its own parameter variation,based on linear matrix inequality(LMI),a hybrid H 2/H∞robust predictive control for permanent magnet synchronous servo motor was proposed.The controller suppressed the permanent magnet synchronous servo motor control system when the load suddenly changes,which not only ensured the fast response and stability of the system,but also made the system robust to the outside world and its own disturbance.Moreover,the simulation study was carried out in Matlab/Simulink,and compared with the traditional PI regulator,the feasibility of the controller was proved.