Static mass imbalance identification and vibration control for rotor of magnetically suspended control moment gyro with active-passive magnetic bearings

Cui, Peiling; He, Jingxian; Fang, Jiancheng

doi:10.1177/1077546314547101

Cited by 15 publications

(7 citation statements)

References 20 publications

(30 reference statements)

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“…Li et al [8] proposed an automatic balancing method using double-loop feedforward control to offset the unbalance effect. Cui et al [9] used the imbalance identification method to identify static mass imbalance and realized the zero-displacement control of the magnetic suspension rotor. Tang and Chen [10] adopted adaptive noise filter using the least mean square (LMS) algorithm and achieved the automatic balance of AMB-rotor systems.…”

Section: Introductionmentioning

confidence: 99%

Research on Automatic Balance Control of Active Magnetic Bearing‐Rigid Rotor System

Liu

Ming

Zhao

et al. 2019

Shock and Vibration

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In this paper, in order to solve the problem of unbalance vibration of rigid rotor system supported by the active magnetic bearing (AMB), automatic balancing method is applied to suppress the unbalance vibration of the rotor system. Firstly, considering the dynamic and static imbalance of the rotor, the detailed dynamic equations of the AMB-rigid rotor system are established according to Newton’s second law. Then, in order to rotate the rotor around the inertia axis, the notch filter with phase compensation is used to eliminate the synchronous control current. Finally, the variable-step fourth-order Runge–Kutta iteration method is used to solve the unbalanced vibration response of the rotor system in MATLAB simulation. The effects of the rotational speed and phase compensation angle on the unbalanced vibration control are analysed in detail. It is found that the synchronous control currents would increase rapidly with the increase of rotational speed if the unbalance vibration cannot be controlled. When the notch filter with phase shift is used to balance the rotor system automatically, the control current is reduced significantly. It avoids the saturation of the power amplifier and reduces the vibration response of the rotor system. The rotor system can be stabilized over the entire operating speed range by adjusting the compensation phase of the notch filter. The method in the paper is easy to implement, and the research result can provide theoretical support for the unbalance vibration control of AMB-rotor systems.

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Section: Introductionmentioning

confidence: 99%

Research on Automatic Balance Control of Active Magnetic Bearing‐Rigid Rotor System

Liu

Ming

Zhao

et al. 2019

Shock and Vibration

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“…7 Additionally, the dynamic and static disequilibrium of high-speed rotating parts such as control moment gyroscope (CMG) and flywheel will also cause high-frequency vibration of the spacecraft. 8,9 All of these vibrations seriously affect the ultra-static performance of spacecraft. The existing research shows that the platform vibration is the main factor to restrict fast and high-precision attitude maneuver and stability of on-orbit spacecraft.…”

Section: Introductionmentioning

confidence: 99%

Spacecraft vibration suppression based on micro-gimbal moment of magnetically suspended flywheel with dynamic feedback and feedforward decoupling control

Chen

Cai

Ren

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part C:

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Aimed at solving the prominent issue of spacecraft high-frequency vibration suppression, this paper creatively puts forward a novel method based on the micro-gimbal moment of magnetically suspended flywheel with dynamic feedback and feedforward decoupling control. The dynamic model of the on-orbit magnetically suspended flywheel is established first and the decoupling control law of spacecraft as well as the micro-gimbal steering law of the magnetically suspended flywheel is designed. The disturbance compensator based on dynamic feedback–feedforward current is put forward to cancel the disturbance of spacecraft to the magnetically suspended flywheel. Then the nonlinear on-orbit magnetically suspended flywheel system is converted into a linear system without spacecraft coupling, and the state feedback decoupling controller is used to realize the high-precision micro-gimbal moment control of the magnetically suspended flywheel. The dynamic compensation filter is further developed to reduce the influence of unmodeled dynamics on decoupling performances, improving the rate of convergence of vibration suppression. The above three components constitute together the dynamic feedback and feedforward decoupling controller. The simulation results show the effectiveness and superiority of this method.

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“…Resulting from misalignment between inertial axis and geometrical axis, mass imbalance can induce synchronous vibration. Mass imbalance of rotor is difficult to be avoided because of the manufacturing imperfection (Cui et al., 2014). Sensor runout, originating from nonuniform electrical and magnetic properties around the sensing surface, and lack of concentricity of the sensing surface, leads to disturbances at multiple harmonic of the rotation frequency (Setiawan et al., 2002).…”

Section: Introductionmentioning

confidence: 99%

Harmonic current suppression of active-passive magnetically suspended control moment gyro based on variable-step-size FBLMS

Cui

2015

Journal of Vibration and Control

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Due to the limitation of the machining accuracy, there exist mass imbalance and sensor runout in magnetically suspended rotor system, which will result in harmonic current in the rotor system. Harmonic current can not only increase the power consumption but also induce harmonic vibration which will be transmitted to spacecraft by magnetic bearings and affect the attitude stability of spacecraft. In order to analyze and reduce harmonic current, the model of magnetically suspended rotor system is built and analyzed. Variable-step-size FBLMS algorithm is proposed in this paper to suppress harmonic current simultaneously. According to the proposed algorithm, step size variation depending on harmonic current and individual step size is figured out for each weight vector so that each frequency component in the block can be adjusted. As a result, convergence performances are further improved by adjusting the weight vectors adaptively. The validity of the proposed method is testified by simulation. Simulation results show that variable-step-size FBLMS algorithm can reduce the harmonic current further and increase the convergence rate.

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Static mass imbalance identification and vibration control for rotor of magnetically suspended control moment gyro with active-passive magnetic bearings

Cited by 15 publications

References 20 publications

Research on Automatic Balance Control of Active Magnetic Bearing‐Rigid Rotor System

Research on Automatic Balance Control of Active Magnetic Bearing‐Rigid Rotor System

Spacecraft vibration suppression based on micro-gimbal moment of magnetically suspended flywheel with dynamic feedback and feedforward decoupling control

Harmonic current suppression of active-passive magnetically suspended control moment gyro based on variable-step-size FBLMS

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