Nonlinear Fractional Active Disturbance Rejection Speed Control for Stabilization of Hydraulic Turbine Regulating Systems With Mechanical Delay

Ai, Bo; Liu, Ting; Zhang, Zhe; Wang, Bin

doi:10.1109/access.2021.3076990

Cited by 7 publications

(3 citation statements)

References 41 publications

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“…According to the above modeling of the pumped storage hydro unit, based on the principle of coordinate transformation, it can be transformed into a spatial state equation [5] as: Because d is bounded, it can be observed with an observer. Extended state observer (ESO) is the key in ADRC [6].…”

Section: Fixed-time Adrc Designmentioning

confidence: 99%

On improved active disturbance rejection controller design for a pumped storage hydro unit

Ding,

Pei

2024

J. Phys.: Conf. Ser.

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The pumped storage hydro unit (PSHU) shows bad dynamic performance because of the frequent switching of working conditions and the S-shaped characteristics of pump turbine. This paper proposes an improved fixed-time active disturbance rejection controller to improve the control performances and counteract the influences of uncertainties including modeling error and friction. A disturbance observer is designed to estimate the total uncertainty by using the information of the states and outputs, compensating the adverse effects of the total uncertainty actively by feed-forward principle as a result. The outstanding benefit of the disturbance observer lies in that it can be designed separately from the original controller and can enhance the performances of the PSHU without changing the original controller. Simulation results show that comparing with the conventional active disturbance rejection controller, the improved active disturbance rejection controller has better adaptability and higher robustness towards the system load disturbance, and the dynamic performance of the system is improved.

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Section: Fixed-time Adrc Designmentioning

confidence: 99%

On improved active disturbance rejection controller design for a pumped storage hydro unit

Ding,

Pei

2024

J. Phys.: Conf. Ser.

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“…The bandwidth method proposed by Gao is used in this study to adjust the gain coefficients. According to the characteristic equation of the ESO, the following can be known (Ai et al, 2021)…”

Section: Foadrcmentioning

confidence: 99%

Control method for permanent magnet synchronous motor based on fractional active disturbance rejection

Zhuang

Liu

et al. 2023

Transactions of the Institute of Measurement and Control

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To improve the response speed and anti-interference ability of a permanent magnet synchronous motor (PMSM), a PMSM control method based on fractional-order active disturbance rejection control (FOADRC) is proposed in this study. First, a fractional-order tracking differentiator (FOTD) and fractional-order extended state observer (FOESO) are designed using the fractional calculus. According to the response speed of the FOTD and the observation effect of the FOESO, a new fastest function and new nonlinear function are designed. Second, a fractional-order active disturbance rejection (FOADR) controller is built based on the new FOTD, new FOESO, and nonlinear feedback control law, and its stability is proven. Finally, the superiority and effectiveness of the proposed strategy are verified through a simulation and experiments.

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“…An adaptive robust impedance controller based on a traditional extended state observer and backstepping method is designed in [37] for the hydraulic mining hydraulic excavator boom to save energy and ensure a smooth digging process. To surmount the problem of unmodeled disturbances and a valve dead zone, the system model and a backstepping technique were employed in [38] to assure the ultimately bounded tracking performance. To solve the problem of the valve deadband and output constraint in the hydraulic exoskeleton control system, a research method of a nonlinear backstepping control strategy is proposed in [39].…”

Section: Introductionmentioning

confidence: 99%

Finite-Time Backstepping Control for Electro-Hydraulic Servo System via Extended State Observer with Perturbation Estimation Performance Improvement

Meng

Yan

et al. 2022

Machines

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The extended state observer (ESO) has been widely used in the state and perturbation estimation of the electro-hydraulic servo system. It was found that there was a controlled quantity in the transfer function between the perturbation estimation value and the disturbance. This indicates that the traditional linear ESO’s estimation of the disturbance is affected by the change in the control input. To solve this problem, a new structure ESO for a hydraulic system (LHYESO) was designed by introducing the hydraulic system’s load pressure and system model. The corresponding frequency domain analysis results show that it eliminates the control input in the transfer function and reduces the dependence of the high-frequency domain range of the perturbation estimation on the significant observer gain. To improve the estimation speed, a finite-time convergent ESO for hydraulic systems (FTHYESO) was proposed based on the structure of LHYESO, and it was proved that the observation error converged to a sufficiently small value during a finite time. Moreover, a finite-time backstepping controller has been designed by using the Lyapunov method to guarantee the rapidity and precise response of the hydraulic servo system. Finally, the experiment results show the effectiveness of the proposed method.

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Nonlinear Fractional Active Disturbance Rejection Speed Control for Stabilization of Hydraulic Turbine Regulating Systems With Mechanical Delay

Cited by 7 publications

References 41 publications

On improved active disturbance rejection controller design for a pumped storage hydro unit

On improved active disturbance rejection controller design for a pumped storage hydro unit

Control method for permanent magnet synchronous motor based on fractional active disturbance rejection

Finite-Time Backstepping Control for Electro-Hydraulic Servo System via Extended State Observer with Perturbation Estimation Performance Improvement

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