In order to solve the unbalanced vibration problem of bearingless induction motor caused by the rotor mass eccentricity, an adaptive feedforward vibration compensation control strategy is researched. Firstly, the inverse dynamic decoupling control method of torque system and the steady-state stochastic displacement feedback control of magnetic suspension system are introduced in brief. Then the feedforward compensation control strategy of unbalanced vibration displacement is discussed, taking the minimum mean square error of rotor radial displacement as a goal, an adaptive feedforward compensation control algorithm for unbalanced vibration displacement is designed, and by changing the amplitude and phase of the compensation signal of unbalanced vibration displacement step by step iteratively, the influence of periodic unbalanced excitation force is suppressed or counteracted. Finally, the feedforward compensation control method is simulated and validated, and the influence of the detection deviation of motor speed on the vibration compensation effect is analyzed. The simulation experiment results show that the adaptive feedforward vibration compensation control strategy can significantly suppress the unbalanced vibration displacement during the sudden change of motor speed, and can eliminate the unbalanced vibration displacement in the steady state, and then the suspension control accuracy of the rotor is greatly improve.

中文翻译：

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无轴承感应电动机的自适应前馈振动补偿控制策略

为了解决转子质量偏心引起的无轴承感应电动机不平衡振动问题，研究了一种自适应前馈振动补偿控制策略。首先，简要介绍了转矩系统的逆动态解耦控制方法和磁悬浮系统的稳态随机位移反馈控制。然后讨论了不平衡振动位移的前馈补偿控制策略，以转子径向位移的最小均方误差为目标，设计了一种不平衡振动位移的自适应前馈补偿控制算法，并通过改变补偿幅度和相位来实现。不平衡振动位移的信号逐步迭代 周期性不平衡激励力的影响被抑制或抵消。最后，对前馈补偿控制方法进行了仿真和验证，分析了电机转速检测偏差对振动补偿效果的影响。仿真实验结果表明，自适应前馈振动补偿控制策略可以显着抑制电机转速突然变化时的不平衡振动位移，并消除稳态时的不平衡振动位移，从而使转子的悬架控制精度达到大大提高。分析了电机转速检测偏差对振动补偿效果的影响。仿真实验结果表明，自适应前馈振动补偿控制策略可以显着抑制电机转速突然变化时的不平衡振动位移，并消除稳态时的不平衡振动位移，从而使转子的悬架控制精度达到大大提高。分析了电机转速检测偏差对振动补偿效果的影响。仿真实验结果表明，自适应前馈振动补偿控制策略可以显着抑制电机转速突然变化时的不平衡振动位移，并消除稳态时的不平衡振动位移，从而使转子的悬架控制精度达到大大提高。