Comparison of AMB-rotor system using multiple phase-shift notch filters connected in series and parallel modes for vibration control

He, Jiaxi; Peng, Cong; Deng, Zhiquan; Zhu, Mengting

doi:10.1109/ccdc.2018.8407157

Cited by 8 publications

(4 citation statements)

References 11 publications

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“…Zheng et al proposed an improved parallel phase-shift notch filter to ensure stable operation over the entire speed range [8]. He et al analyzed the difference between the harmonic suppression performance of parallel notch filters and series notch filters [9].Cui et al proposed a harmonic suppression method based on the VSSRC, which solves the problem of the degradation of the performance of the CRC control method in the fluctuation of vibration frequency [10].…”

Section: Introductionmentioning

confidence: 99%

Magnetic bearing displacement stiffness force feed-forward compensation method considering harmonic disturbance

Fan,

Sun,

Bai

et al. 2024

Ninth International Symposium on Sensors, Mechatronics, and Automation System (ISSMAS 2023)

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During the operation of the magnetic bearing , there is an unbalanced component in the displacement signal at the same frequency as the rotational speed, which produces the displacement stiffness force of the same frequency of speed to affect the performance of the control system, so it is necessary to suppress the magnetic bearing displacement stiffness force. Due to the influence of displacement sensor runout and the nonlinear characteristics of magnetic bearings, there is also a speed multiplication component in the displacement signal, and in view of the above problems, a feed-forward compensation method for magnetic bearing displacement stiffness force considering harmonic disturbance is proposed, and the speed multiplication component in the displacement signal is suppressed by a second-order generalized integrator with feedback coefficient in series, and the displacement stiffness force is compensated in real time by the feed-forward compensation method. The simulation results show that this method can effectively reduce the influence of the harmonic disturbance on the displacement stiffness compensation in the displacement signal, and effectively improve the compensation accuracy of the displacement stiffness force.

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Section: Introductionmentioning

confidence: 99%

Magnetic bearing displacement stiffness force feed-forward compensation method considering harmonic disturbance

Fan,

Sun,

Bai

et al. 2024

Ninth International Symposium on Sensors, Mechatronics, and Automation System (ISSMAS 2023)

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“…P. Cui [24] and J. He [25] proposed a multiple phase shift notch filter method for magnetic bearing systems to suppress the harmonic components over the full speed range. Moreover, to cope with vibrations caused by parameter uncertainty, external disturbances, or unmodeled disturbances, some robust controllers have been applied to magnetic bearing systems.…”

Section: Introductionmentioning

confidence: 99%

Active Disturbance Rejection Control in Magnetic Bearing Rotor Systems with Redundant Structures

Cheng

Song

et al. 2022

Sensors

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At present, magnetic bearings are a better energy-saving choice than mechanical bearings in industrial applications. However, there are strongly coupled characteristics in magnetic bearing–rotor systems with redundant structures, and uncertain disturbances in the electrical system as well as external disturbances, and these unfavorable factors degrade the performance of the system. To improve the anti-interference performance of magnetic bearing systems, this paper proposes the inverse of the current distribution matrix W−1 meaning that the active disturbance rejection control simulation model can be carried out without neglecting the current of each coil. Firstly, based on the working mechanism of magnetic bearings with redundant structures and the nonlinear electromagnetic force model, the current and displacement stiffness models of magnetic bearings are established, and a dynamic model of the rotor is constructed. Then, according to the dynamic model of the rotor and the mapping relationship between the current of each coil and the electromagnetic force of the magnetic bearing, we established the equivalent control loop of the magnetic bearing–rotor system with redundant structures. Finally, on the basis of the active disturbance rejection control (ADRC) strategy, we designed a linear active disturbance rejection controller (LADRC) for magnetic bearings with redundant structures under the condition of no coil failure, and a corresponding simulation was carried out. The results demonstrate that compared to PID+current distribution control strategy, the LADRC+current distribution control strategy proposed in this paper is able to effectively improve the anti-interference performance of the rotors supported by magnetic bearings with redundant structures.

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“…There are two methods for suppressing harmonic components. One is that a controller suppresses a frequency component, such as notch filter (He et al, 2018), finite dimensional repetitive controller (FDRC) (Xu et al, 2008), and resonant controller (Peng et al, 2017). Liu et al (2020) proposes a dual-input dual-output notch filter.…”

Section: Introductionmentioning

confidence: 99%

Harmonic vibration moment suppression using hybrid repetitive control for active magnetic bearing system

Cui

Zhou

et al. 2021

Journal of Vibration and Control

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The active magnetic bearing system exhibits mass imbalance and sensor runout which cause the system to generate harmonic vibration force and moment. Repetitive control is an effective method to eliminate such harmonic vibration. Traditional repetitive control will eliminate all of the harmonic frequency components. However, in a practical system, the odd harmonic components usually dominate. Meanwhile, the existing method only suppresses the vibration force in the magnetic bearing system, and there is little research on the suppression of moment. Aiming at these problems, the harmonic vibration moment of the active magnetic bearing system is taken as the control object. This study investigates a hybrid control method that combines a second-order odd harmonic repetitive control with finite-dimensional repetitive control. And the virtual variable sampling is applied to construct any virtual sampling period in the proposed method, which effectively solves the problem of non-integer delay of digital repetitive control. The stability of the active magnetic bearing system is analyzed. The experimental results show that this method has faster response speed and better robustness when the frequency fluctuates.

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Comparison of AMB-rotor system using multiple phase-shift notch filters connected in series and parallel modes for vibration control

Cited by 8 publications

References 11 publications

Magnetic bearing displacement stiffness force feed-forward compensation method considering harmonic disturbance

Magnetic bearing displacement stiffness force feed-forward compensation method considering harmonic disturbance

Active Disturbance Rejection Control in Magnetic Bearing Rotor Systems with Redundant Structures

Harmonic vibration moment suppression using hybrid repetitive control for active magnetic bearing system

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