无轴承永磁同步电机悬浮子系统H_2/H_∞混合控制

Study on Suspension Performance of PM Type Bearingless Motors with H_2/H_∞ Mixed Controller

无轴承永磁同步电机悬浮子系统为一多变量、强耦合系统,需要鲁棒性很强的控制器才能实现稳定悬浮。为一台无轴承永磁同步电机悬浮子系统设计了H2/H∞混合控制器,并就抗干扰能力与H2控制器进行了比较,就动态性能与PID控制器进行了比较。仿真结果表明,H2/H∞混合控制器能保证电机的稳定悬浮,且相对于H2控制器具有更好的鲁棒性,相对于PID控制器具有更好的动态性能。

The suspension subsystem of the bearingless permanent magnet synchronous motor is a system of multi-variable and strong-coupled system. To ensure the good performance of the suspension, a controller with strong robustness is needed. Hz/H∞ mixed controller was designed for the suspension subsystem of the bearingless permanent magnet synchronous motor, and the robustness compared with H2 controller and the dynamic performance compared with PID controller were investigated in simulation, the simulation results show that the H2/H∞ mixed controller can ensure the motor with better robustness compared with H2 controller and better dynamic performance compared with PID controller.