Design and Analysis of Second-Order Sliding Mode Controller for Active Magnetic Bearing

Wang, Xiaoyuan; Zhang, Yaopeng; Peng, Gao

doi:10.3390/en13225965

Cited by 30 publications

(9 citation statements)

References 14 publications

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“…The sliding mode control can overcome the uncertainty of the system and has a strong robustness to unknown disturbances [21]. However, when the state trajectory reaches the sliding mode surface, the inertia of the system makes it shuttle back and forth on both sides of the sliding mode surface, resulting in jitter [22], and the precision driving response cannot be guaranteed in the application environment where the MRD requires a fast current. The ADRC controller [23] has less dependence on the mathematical model of the system and estimates the system disturbance through the extended state observer; thus, it has a strong adaptability to the uncertainty of the system.…”

Section: Introductionmentioning

confidence: 99%

Research on Current Drive System of Magnetorheological Damper Based on Fuzzy PI Control

Liang

Xia

et al. 2022

Materials

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Magnetorheological dampers (MRD) are increasingly used in smart structural damping systems due to their good damping properties. In practical applications, as a nonlinear device, the parameters of the internal excitation coil of the magnetorheological damper will change during operation under the influence of the temperature and external environment, deteriorating the dynamic performance of the output current of the driver and reducing the damping effect of the system. Therefore, the current driver needs to be optimized for this phenomenon in order to ensure accurate current output. In this paper, a mathematical model of the buck circuit combined with the MRD equivalent circuit is established, and after analyzing the model, the parameters of the PI controller are rectified to lay the foundation for the design of the adaptive law. Then, with the help of the fuzzy control method, a fuzzy PI control strategy for MRD current driver is established, which enables the current driving system to adjust the control parameters adaptively when the MRD parameters change and ensure the accurate driving current output. The experimental results demonstrate that the fuzzy PI control strategy has a stronger robustness in the face of parameter changes of the control object compared with the traditional PI control at a system parameter change rate of 40%.

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Section: Introductionmentioning

confidence: 99%

Research on Current Drive System of Magnetorheological Damper Based on Fuzzy PI Control

Liang

Xia

et al. 2022

Materials

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“…To meet the need for high-speed drive in the industrial field, the alternating current (AC) motor supported by all kinds of magnetic bearings is widely researched and developed [1][2][3][4][5], but it still has some obvious disadvantages, such as a limited critical speed and more magnetic suspension system power consumption, etc. [1,[6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Research on the Speed Sliding Mode Observation Method of a Bearingless Induction Motor

Chen

Qiao

2021

Energies

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In order to achieve the speed sensorless control of a bearingless induction motor (BL-IM), a novel sliding mode observation (SMO) method of motor speed is researched. First of all, according to the mathematical model of a BL-IM system, the observation model of stator current and that of rotor flux-linkage are derived. In order to overcome the chattering problem of a sliding mode observer, a continuous saturation function is adopted to replace the traditional sign function. Then, the SMO model of motor speed is derived, and the stability of the proposed motor speed SMO method is validated by the Lyapunov stability theory. At the end, the observed motor speed and rotor flux-linkage are applied to a BL-IM inverse “dynamic decoupling control” (DDC) system. Simulation results show that the real-time observation or dynamic tracking of motor speed and rotor flux-linkage are achieved in a more timely manner and more accurately, and higher steady-state observation accuracy is obtained; the proposed SMO method can be used in the BL-IM’s inverse DDC system to realize reliable magnetic suspension operation control without a speed sensor.

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“…Jin et al [26] designed a controller for AMB based on active disturbance rejection theory and the comparison with PID controller is also presented. The second-order sliding mode controller design and analysis for AMB system is presented and its performance is compared with sliding mode controller [27]. The modern control strategy was implemented namely Linear Quadratic Regulator (LQR) with full states information for stable AMB operation [28].…”

Section: Introductionmentioning

confidence: 99%

Investigation of a 2-DOF Active Magnetic Bearing Actuator for Unmanned Underwater Vehicle Thruster Application

Ahad

Ahmad

2021

Actuators

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In this work, a novel application of Active Magnetic Bearing (AMB) is proposed to integrate AMB in the Magnetically Coupled Thruster (MCT) assembly for underwater application. In this study, a 2-Degree-Of-Freedom (DOF) AMB is developed and investigated for the MCT of an Unmanned Underwater Vehicle (UUV). The paper presents the detailed electro-mechanical modeling of the in-house developed AMB system. The intractable problem of rotor suspension and rotation with opposing pairs of electromagnets is considered. A Linear Quadratic Gaussian (LQG) controller is designed and analyzed in the frequency domain for the stabilization of the open-loop unstable AMB for MCT. The performance specifications of the controller, such as reference tracking and disturbance rejection are achieved and evaluated through real-time implementation of the controller. The compensator also performed reasonably well during the dynamic operations, i.e., when the rotor-propeller assembly was spun at 1500 rpm. This rotor speed is needed to generate a thrust of 40–45 N and up to 1 m/s forward velocity, which is necessary to propel the UUV under consideration. By deploying AMB in MCT assembly, it is anticipated that problems associated with the conventional directly coupled thruster operating in harsh underwater environment, such as water ingress into electronics compartment, rusting, lubrication, and vibrations would be eliminated.

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Design and Analysis of Second-Order Sliding Mode Controller for Active Magnetic Bearing

Cited by 30 publications

References 14 publications

Research on Current Drive System of Magnetorheological Damper Based on Fuzzy PI Control

Research on Current Drive System of Magnetorheological Damper Based on Fuzzy PI Control

Research on the Speed Sliding Mode Observation Method of a Bearingless Induction Motor

Investigation of a 2-DOF Active Magnetic Bearing Actuator for Unmanned Underwater Vehicle Thruster Application

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