基于H_∞频域整形的微积分控制参数在磁悬浮轴承中的应用

Robust Proportional Integral Differential Controller Based on H_∞ Theory Design for Active Magnetic Bearing

讨论了基于H∞ 频域整形的比例、积分及微分 (PID)控制参数的选取 ,设计了PID控制器 .对径向磁悬浮轴承的控制做了计算机仿真 ,并进行了实验验证 .研究表明 ,控制系统的鲁棒稳定性和对低频干扰的抑制能力与系统带宽有关 ,其实现指标可由灵敏度函数与互补灵敏度函数之比来确定 .

The robust Proportional Integral Differential (PID) design method based on H ∞ closed-loop gain shaping theory is developed and used in the active magnetic bearing. After discussing the design theory of the robust PID control system based on H ∞ control theory, the robust PID control system was established. Then, the simulations of control system for the radial bearing were performed and good performances were obtained. The robustness of the actual test rig has been verified by experiments. The robust performance with parameter variations in this test rig and the ability of disturbance rejection are relative to the system band, and they may be determined by S(s)*.T(s) curve.