Gimbal Disturbance Torque Rejection for Magnetically Suspended Rotor

Liu, Gang; Xie, Jinjin; Zheng, Shiqiang; Xu, Xiangbo

doi:10.2514/1.g001258

Cited by 5 publications

(3 citation statements)

References 25 publications

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“…In order to reduce or eliminate high-frequency chattering behavior of the sliding surface function and enhance anti-disturbance ability, disturbance observer-based control (DOBC) has been studied in recent years (Liu et al, 2016; Liu and Wang, 2021; Yi et al, 2016; Zhang et al, 2013). In Zhang et al (2016), an effective disturbance observer (DO)-based integral SMC approach is proposed for systems with mismatched disturbances.…”

Section: Introductionmentioning

confidence: 99%

Finite-time composite control for gimbal system in SGCMG under high-frequency disturbance

Cui

Yang

Qiao

et al. 2022

Transactions of the Institute of Measurement and Control

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This paper investigates the velocity-tracking problem of the gimbal system in a single gimbal control moment gyro (SGCMG) suffering from high-frequency disturbance. In order to accurately and quickly reject the high-frequency disturbance resulted from nonuniform mass distribution and manufacturing imperfection, a finite-time harmonic disturbance observer (FTHDO) is constructed according to the available information about the high-frequency disturbance. Then, a composite controller is developed to achieve simultaneous disturbance rejection and attenuation. The nominal control performance can be recovered under the high-frequency disturbance. It has been demonstrated that the velocity-tracking error can be stabilized by the proposed composite controller within finite time. Finally, numerical simulation results are presented to verify the superiority of the proposed method.

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Section: Introductionmentioning

confidence: 99%

Finite-time composite control for gimbal system in SGCMG under high-frequency disturbance

Cui

Yang

Qiao

et al. 2022

Transactions of the Institute of Measurement and Control

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show abstract

“…The nonlinear issues caused by the factors mentioned above cannot be well solved by the linear control method. The MB rotor can be regarded as a linear control object when moving near the equilibrium point, 11 based on which the proportional–integral–differential (PID) controller for MB is studied, and the limits of the general PID controller in stability control are also presented. 12 A feedback linearization is employed in combination with robust control techniques for the regulation of a single-axis test rig actuated by a multiple-pole MB; 13 however, the performance of this method will be reduced when the rotor tilts from the equilibrium point.…”

Section: Introductionmentioning

confidence: 99%

PIDNN control for Vernier-gimballing magnetically suspended flywheel under nonlinear change of stiffness and disturbance

Tang

Ning

Cui

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part I:

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Vernier-gimballing magnetically suspended flywheel is often used for attitude control and interference suppression of spacecrafts. Due to the special structure of the conical magnetic bearing, the radial component generated by the axial magnetic force and the change of the magnetic air gap will cause the nonlinearity of stiffness and disturbance. That will lead to not only poor stability of the suspension control system but also unsatisfactory tracking accuracy of the rotor position. To solve the nonlinear problem of the system, this article proposes a proportional–integral–derivative neural network control scheme. First, the rotor model considering the nonlinear variation of disturbance and stiffness parameters is established. Then, the weight of neural network is adjusted by the gradient descent method online to ensure the accurate output of magnetic force. Finally, the convergence analysis is carried out based on the Lyapunov stability theory. Compared with the general proportional–integral–derivative control and the radial basis function neural network control, the simulation results demonstrate that the proposed method has the highest tracking accuracy and excellent performance in improving stability. The experimental results prove the correctness of the theoretical analysis and the validity of the proposed method.

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“…Tang et al (2019) introduced the enhanced internal model control (EIMC) method to improve stability of rotor system, but the control precision needs to be further improved. To estimate the large moments induced by moving-gimbal effects and compensate it, Liu G et al (2016) designed a disturbance observer and Liu C et al (2017) introduced an extended state observer (ESO) with feedback linearization to improve the control performance for the magnetic bearing-rotor system (Liu et al, 2016; Liu et al, 2017). All these methods can effectively suppress the moving-gimbal effects, but their control precision are not very high and their robustness are not good enough either.…”

Section: Introductionmentioning

confidence: 99%

Stable control of the high-speeding magnetically suspended rotor based on extended state observer and two-degree freedom internal model control for control moment gyros with serious moving-gimbal effects

Tang

Wei

et al. 2020

Transactions of the Institute of Measurement and Control

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For a magnetically suspended control moment gyro (MSCMG), which is an ideal attitude actuator for its large outputting control moment and fast response, the moving-gimbal effects due to the coupling between the moving gimbal and high-speeding rotor will make the magnetically suspended rotor (MSR) unstable. To improve control precision, both the dynamic model of MSR and the feedback linearization control are done to decouple tilting motion, and poles of the system are reconfigured to reduce control error. To suppress the varying disturbance moments caused by moving-gimbal effects, an extended state observer (ESO) is originally designed to estimate and compensate them timely and accurately. To improve system robustness, a two-degree freedom internal model control (2-DOF IMC) is researched to suppress model error. Compared with existing proportional integral derivative (PID) control method, simulations done on a single gimbal MSCMG with 200 N.m.s angular momentum indicated that this presented control method with ESO and 2-DOF IMC can suppress the moving-gimbal effects more effectively and make the rotor suspension more stable.

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Gimbal Disturbance Torque Rejection for Magnetically Suspended Rotor

Cited by 5 publications

References 25 publications

Finite-time composite control for gimbal system in SGCMG under high-frequency disturbance

Finite-time composite control for gimbal system in SGCMG under high-frequency disturbance

PIDNN control for Vernier-gimballing magnetically suspended flywheel under nonlinear change of stiffness and disturbance

Stable control of the high-speeding magnetically suspended rotor based on extended state observer and two-degree freedom internal model control for control moment gyros with serious moving-gimbal effects

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