基于影响系数法的磁悬浮转子不平衡补偿控制

Unbalance Compensation Control of Magnetic Suspension Rotor Based on Influence Coefficient Method

为了减小磁悬浮转子的不平衡振动,提高旋转精度,提出了一种基于影响系数法的不平衡补偿控制方法。该方法无需系统传递函数及设计控制器,通过在功率放大器前试加电压补偿信号,利用所设计的基于LabVIEW上位机系统来获取转子不平衡响应的振幅与相位,经过两次试加补偿信号,求解出不平衡校正信号,实现磁悬浮转子的不平衡补偿控制。在磁悬浮转子不平衡补偿控制实验中,不平衡振动的频域信号基频幅值显著降低。实验结果表明,该方法对磁悬浮转子不平衡振动的抑制是有效的,所设计的磁悬浮轴承监测及不平衡补偿上位机系统是可靠的。

To reduce the unbalanced vibration of the magnetic suspension rotor and to improve the rotation precision,an unbalance compensation control method based on the influence coefficient method is proposed.The method does not need the system transfer function and design controller.By applying the voltage compensation signal before the power amplifier,a LabVIEW host computer system is designed to obtain the amplitude and phase of the rotor unbalance response.After two trials and compensation signals,the unbalance correction signal is solved to realize the unbalance compensation control of the magnetic suspension rotor.In the magnetic suspension rotor imbalance compensation control test,the fundamental frequency amplitude of the frequency domain signal of the unbalanced vibration is significantly reduced.The experimental results prove that the proposed method is effective for suppressing the unbalanced vibration of the magnetic suspension rotor.The designed magnetic suspension bearing monitoring and unbalance compensation upper computer system is reliable.