基于不平衡系数辨识的电磁轴承-刚性飞轮转子系统不平衡补偿控制

Unbalance Compensation Control of Active Magnetic Bearing-Rigid Flywheel Rotor System Based on Unbalance Coefficients Identification

针对电磁轴承-刚性飞轮转子系统不平衡振动的抑制问题,提出一种基于不平衡系数辨识的自适应不平衡补偿控制算法。基于电磁轴承-刚性飞轮转子系统的动力学模型,设计了状态反馈PID电流控制器,提出不平衡系数辨识方程及不平衡补偿算法。分析了带有补偿环节的电磁轴承-刚性飞轮转子系统的稳定性及补偿算法中各参数的选择原则。对不平衡补偿算法的有效性进行了仿真和实验研究。结果表明：文中提出的基于不平衡系数辨识的不平衡补偿算法不仅能够正确地辨识出转子的不平衡,而且在整个转速区间内具有良好的稳定性以及对不平衡振动的抑制能力。

For the unbalance vibration suppression of active magnetic bearing（AMB）-rigid flywheel rotor systems, an adaptive unbalance compensation control method based on unbalance coefficients identification was proposed. Based on the dynamic model of the AMB-rigid flywheel rotor system, a state feedback PID current controller was proposed firstly, and an unbalance coefficients identification equation and an unbalanced compensation algorithm which makes the rotor rotate around the geometric axis, were constructed. Then, the stability of the AMB-rigid flywheel rotor system with the compensation unit and choosing principles of parameters of the compensation algorithm were analyzed. Finally, the effectiveness of the compensation algorithm was investigated by simulations and experiments. It is shown that the proposed method not only can identify unbalanced location of the rotor properly, but also has a good stability in the whole speed range and a good ability of the rotor to suppress unbalance vibration at steady states and acceleration operations.