Feedforward compensation control of rotor imbalance for high-speed magnetically suspended centrifugal compressors using a novel adaptive notch filter

Zheng, Shiqiang; Feng, Rui

doi:10.1016/j.jsv.2015.12.029

Cited by 36 publications

(24 citation statements)

References 24 publications

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“…where Ā 21 , Ā 22 , B 2 , Ḡ 2 and W 2 are also shown in Appendix. The coupling between the four output variables of the sensor positions is determined by the matrices Ā 21 and Ā 22 .…”

Section: Analyses Of Coupling Between the Four Output Variablesmentioning

confidence: 99%

Feedforward decoupling control for rigid rotor system of active magnetically suspended high‐speed motors

Zhao

Zhu

2019

IET Electric Power Applications

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In order to eliminate the coupling between of radial four degree-of-freedoms (DOFs) in a rigid rotor supported by two radial active magnetic bearings and to suppress the rotor imbalance vibration, a feedforward decoupling control was proposed, and then the rotor imbalance compensation based on imbalance identification was used after the rotor system had been decoupled. A time-optimal tracking differentiator was used to improve the performances of feedforward decoupling control and imbalance compensation. Numerical simulations and experiment results show that the radial four DOF coupling system could be completely decoupled into four single DOF systems by the feedforward decoupling controller, the imbalance vibration of the decoupled system could be effectively suppressed by the imbalance compensation, the performances of decoupling and imbalance compensation could be improved and the anti-interference ability of the control system could be enhanced by using the time-optimal tracking differentiator.

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Section: Analyses Of Coupling Between the Four Output Variablesmentioning

confidence: 99%

Feedforward decoupling control for rigid rotor system of active magnetically suspended high‐speed motors

Zhao

Zhu

2019

IET Electric Power Applications

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“…e method based on the Fourier series and the Legendre polynomial to identify the imbalance of the magnetic bearing rotor system was described in literature [18]. Reference [19] developed a feedforward control strategy for the rotor imbalance of high-speed magnetic suspension centrifugal compressors. e above studies on the dynamic behavior and control of bearing are all about deterministic systems.…”

Section: Introductionmentioning

confidence: 99%

Hopf Bifurcation and Control of Magnetic Bearing System with Uncertain Parameter

Wang

Hao³

et al. 2019

Complexity

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In this paper, the Hopf bifurcation and control of the magnetic bearing system under an uncertain parameter are investigated. Firstly, the two-degree-of-freedom magnetic bearing system model with uncertain parameter is established. The method of orthogonal polynomial approximation is used to obtain the equivalent magnetic bearing model which is deterministic. Secondly, combining mathematical analysis tools and numerical simulations, the Hopf bifurcation of the equivalent model is analyzed. Finally, a hybrid feedback control method (linear feedback control method combined with nonlinear stochastic feedback control method) is introduced to control the Hopf bifurcation behavior of the magnetic bearing system.

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“…Periodical disturbance is a common concern in magnetic bearings. It induces fluctuating current in the coil and further generates the vibration forces and torques [10][11][12]. A dominant source of the disturbance is the mass imbalance of the rotor.…”

Section: Introductionmentioning

confidence: 99%

Vibration Torque Suppression for Magnetically Suspended Flywheel Using Improved Synchronous Rotating Frame Transformation

Peng

Cai

Deng

et al. 2019

Shock and Vibration

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Synchronous vibration, a common issue in active magnetic bearing (AMB) system, is mainly caused by mass imbalance of the rotor. It comes with high-power consumption and serious impact on the housing base, dramatically degrading the performance of AMB. Magnetically suspended flywheel (MSFW), which owns a flat rotor and consequently shows strong gyroscopic effects even at low operating speed, requires additional attention not only for suppressing the synchronous vibration but also for maintaining the overall stability faced with the coupled dynamics. In this work, in order to suppress the vibration torques in MSFW with significant gyroscopic effects, an improved synchronous rotating frame- (SRF-) based control method is proposed. The proposed method introduces the compensation phase for stability adjustment and aims at simultaneously suppressing the synchronous components in the coupled axes. Firstly, the vibration torque model of MSFW is established, and the baseline control strategy for suspension and gyroscopic effects restrain is derived. Then, the principle and implementation of the improved SRF-based vibration torque method are analyzed, which aims at suppressing the synchronous vibration torques through attenuating synchronous components in coil currents. Moreover, the stability of the overall closed-loop system is analyzed. Finally, the effectiveness of the proposed method is verified through simulation and experimental results.

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Feedforward compensation control of rotor imbalance for high-speed magnetically suspended centrifugal compressors using a novel adaptive notch filter

Cited by 36 publications

References 24 publications

Feedforward decoupling control for rigid rotor system of active magnetically suspended high‐speed motors

Feedforward decoupling control for rigid rotor system of active magnetically suspended high‐speed motors

Hopf Bifurcation and Control of Magnetic Bearing System with Uncertain Parameter

Vibration Torque Suppression for Magnetically Suspended Flywheel Using Improved Synchronous Rotating Frame Transformation

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