径向磁悬浮轴承参数不确定控制的研究

H_∞ Controller Design with Structured Parameter Uncert ainty of Radial Electromagnetic Bearings

研究了基于状态空间算法的径向磁悬浮轴承参数不确定H∞ 控制 ,将磁悬浮轴承的位移和速度变量直接反馈 ,设计了H∞ 状态反馈控制器 ,解决了轴向重载磁悬浮轴承系统中的关联不确定性问题。仿真结果表明 ,在所考虑的参数不确定范围内控制系统具有鲁棒稳定性。

This paper is concerned with an application of H ∞  control based on state-space to radial electromagnetic bearing. The displacement and velocity of the rotor are chosen as the feedback variables for the state-feedback H ∞  controller. Simulation shows that the H ∞  controller designed is very effective for the interconnected uncertain ty of electromagnetic bearing with shaft high load. The control system has remar kable stability robustness with respect to the system stiffness parameter varyin g in the allowed range.