The magnetic levitation motor is high efficiency, energy saving and environmental protection, which integrates magnetic levitation bearing and permanent magnet motor into the traditional motor. Two key technologies of its stable operation are vibration suppression control of magnetic bearing and speed sensorless chattering suppression control of motor. The innovative research has been studied from the perspective of control systems. First, in order to form the vibration suppression controller, the traditional proportional integral differential control has been improved by adding incomplete differential time constant. In addition, the method using linear variable structure sliding mode observer (SMO) is proposed to achieve speed identification, which can solve the chattering problem caused by the discontinuous high frequency switching signal compared to the traditional SMO. Finally, the experimental platform is built to verify the correctness of the proposed control methods. When the motor operates in speed sensorless mode, the rotor vibration is within the effective range. © 2024 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.

中文翻译：

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磁悬浮电机复合减振控制的改进

磁悬浮电机高效、节能、环保，将磁悬浮轴承和永磁电机集成到传统电机中。其稳定运行的两项关键技术是磁力轴承振动抑制控制和电机无速度传感器抖振抑制控制。该创新研究是从控制系统的角度进行研究的。首先，为了形成振动抑制控制器，对传统的比例积分微分控制进行了改进，加入了不完全微分时间常数。此外，提出了利用线性变结构滑模观测器（SMO）实现速度辨识的方法，与传统SMO相比，可以解决高频开关信号不连续带来的抖振问题。最后搭建实验平台验证所提控制方法的正确性。当电机工作在无速度传感器模式时，转子振动在有效范围内。 © 2024 日本电气工程师协会和 Wiley periodicals LLC。