Research on Position Servo System Based on Fractional-Order Extended State Observer

Huang, Jin; Ma, Pengtao; Bao, Guangxuan; Gao, Fangzheng; Shi, Xinxin

doi:10.1109/access.2020.2997407

Cited by 27 publications

(14 citation statements)

References 22 publications

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“…e phase delay resulting from TD is compensated by Taylor's formula approach; Taylor's formula is used to compensate phase delay in TD [18], and it can be expressed as…”

Section: Shock and Vibrationmentioning

confidence: 99%

See 1 more Smart Citation

A Novel Active Disturbance Rejection Control with a Super‐Twisting Observer for the Rocket Launcher Servo System

Shi

Hou

et al. 2021

Shock and Vibration

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In this paper, a novel active disturbance rejection control (NADRC) with a super-twisting extended state observer (SESO) is utilized in the rocket launcher servo system. The main arguments in the shipborne rocket launcher system are control accuracy and antidisturbance ability, which are closely related to phase delay and bandwidth. Firstly, we use Taylor’s formula approach to compensate the phase delay in traditional tracking differentiator (TD). Secondly, we design the parallel structured SESO to improve the observation bandwidth, so that it can estimate states with desired accuracy in NADRC. Finally, sinusoidal simulation results show Taylor’s formula-based TD can suppress noise and compensate phase delays effectively. In comparison with traditional ADRC, the proposed NADRC is shown to have better tracking performance and stronger robustness. Semiphysical experiments are conducted to prove the feasibility of NADRC.

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“…e phase delay resulting from TD is compensated by Taylor's formula approach; Taylor's formula is used to compensate phase delay in TD [18], and it can be expressed as…”

Section: Shock and Vibrationmentioning

confidence: 99%

“…e key role of ESO is to observe total disturbances and transfer the real-time observations to NLSEF. Fractionalorder extended state observer is presented to observe the total disturbance in [18]. However, high switching gain leads to chattering and steady state fluctuation.…”

Section: Introductionmentioning

confidence: 99%

A Novel Active Disturbance Rejection Control with a Super‐Twisting Observer for the Rocket Launcher Servo System

Shi

Hou

et al. 2021

Shock and Vibration

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“…In recent years, many scholars have designed effective control methods for motor servo systems based on LADRC [39]- [41]. In [39], LADRC was used for disturbance control of a permanent magnet synchronous generator to improve the tracking accuracy of the servo system.…”

Section: Introductionmentioning

confidence: 99%

“…In [40], an LADRC method for measuring delay compensation of permanent magnet synchronous motor (PMSM) current loop was proposed; this method improves the disturbance suppression performance under the dead-time effect. In [41], a control strategy based on fractional order ESO was proposed for a PMSM position servo system; this strategy improves the motion accuracy and disturbance rejection ability. It can be seen from the existing research work that adding known model information into ESO design can reduce observation burden and improve estimation accuracy of system states [42], [43].…”

Section: Introductionmentioning

confidence: 99%

Extended State Observer-Based IMC-PID Tracking Control of PMLSM Servo Systems

et al. 2021

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Servo systems driven by a permanent magnet linear synchronous motor (PMLSM) are often affected by uncertain disturbances, such as magnetic resistance, friction, and external disturbances, which increase tracking errors and reduce motion accuracy. Traditional control methods may have difficulty to achieve satisfactory control performance in terms of tracking accuracy and disturbance rejection. In this paper, we propose an internal model control PID method based on a model linear extended state observer, which is termed as IMC-PID-MLESO method. With this method, the nominal model parameters of the PMLSM servo system are obtained via system identification. The model linear extended state observer (MLESO), with known parameter information, is designed to improve the estimation accuracy for the system states and total unknown uncertainties. As the uncertainties are compensated in the feedback control law, the PMLSM servo system model is transformed into a known nominal model. Based on the nominal model, the IMC-PID feedback controller is designed to ensure satisfactory performance on disturbance rejection and tracking error reduction. Simulation and experimental results show that the IMC-PID-MLESO method can effectively improve the position tracking accuracy of the PMLSM servo system and rapidly suppress the system disturbance.INDEX TERMS Disturbance suppression, internal model control, permanent magnet linear synchronous motor, tracking accuracy, uncertainties.

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“…[30], ADRC is applied to the uncertain nonlinear system with external bounded random perturbations. Despite NADRC studies, it is a common problem that high-frequency buffeting occurs to a certain extent after the system reaches a steady state [31]. In addition, ADRC is primarily used for typical single-input single-output (SISO) systems or the standard ADRC model at present, and the multidimensional nonlinear system is rarely studied.…”

Section: Introductionmentioning

confidence: 99%

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

Liu

Zhang

et al. 2021

IEEE Access

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An improved fractional-order nonlinear active disturbance rejection speed control (FO-NADRC) method is proposed for hydraulic turbine regulating systems (HTRSs) with a mechanical delay. First, the mathematical model of an HTRS with a mechanical time delay is established. Based on the principle of coordinate transformation, the state space equation of an HTRS with a time delay is transformed into the controllable normative mathematical model. Second, a new nonlinear function is proposed for the extended state observer (ESO) that improves the observation accuracy and suppresses the high-frequency oscillation of the HTRS. Third, a new fractional-order state error feedback law (FO-SEFL) is proposed by introducing double adjustable parameters. Fourth, according to the improved ESO and the FO-SEFL, a novel FO-NADRC is designed for the HTRS. Furthermore, the Popov-Lyapunov robust stability analysis method is used to analyze the stability of the hydraulic turbine regulating control systems with mechanical delay. Finally, numerical simulation experiments demonstrate the effectiveness and superiority of the proposed control scheme.

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Research on Position Servo System Based on Fractional-Order Extended State Observer

Cited by 27 publications

References 22 publications

A Novel Active Disturbance Rejection Control with a Super‐Twisting Observer for the Rocket Launcher Servo System

A Novel Active Disturbance Rejection Control with a Super‐Twisting Observer for the Rocket Launcher Servo System

Extended State Observer-Based IMC-PID Tracking Control of PMLSM Servo Systems

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

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