A novel hierarchical nonlinear proportional-integral fast terminal sliding mode control for PMSM drives

Peng, Gao; Zhang, Guangming

doi:10.1177/16878140211008766

Cited by 3 publications

(2 citation statements)

References 47 publications

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“…Therefore, a reasonable control method must be adopted to improve the motor control performance, satisfy actual requirements, and ensure smooth motor operation. 1,2…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, a reasonable control method must be adopted to improve the motor control performance, satisfy actual requirements, and ensure smooth motor operation. 1,2 Traditional PMSM control methods include vector control and direct torque control (DTC). The vector control technology, which is based on DC motor control methods, establishes decoupling equations to achieve the separation of straight-and cross-axes currents, and thus realizes the decoupling of magnetic field and torque so that AC motors have a similar control performance to DC motors.…”

Section: Introductionmentioning

confidence: 99%

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Ultra-local model-free speed prediction control based on high-order sliding mode compensation for PMSM drives

Chen

2022

Advances in Mechanical Engineering

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The model predictive control (MPC) is widely used in permanent magnet synchronous motor (PMSM) motion systems because of its simple structure, easy implementation, and reasonable control effect to realize accurate speed tracking. However, MPC relies on the mathematical model of a PMSM. During motor operation, parameter drifts will occur and the model will be mismatched. Furthermore, motor operation may be affected by known and unknown disturbances, resulting in a degraded control performance. To solve this problem, ultra-local model-free speed prediction control (MFSPC), based on high-order sliding mode compensation (HOSMC), is proposed. Only the output and input of the speed loop are used to establish MFSPC and no system parameters are considered. HOSMC shows good control performance under nonlinearity and is not sensitive to parameter changes and external disturbances, which improves the robustness and anti-interference performance of the control system. Therefore, the current output is composed of two parts: an MFSPC output current and an HOSMC output current. The experimental results show that the method has strong robustness and anti-interference ability, and it can achieve a rapid dynamic response, track rated speed, reduce current and speed ripples, and suppress chattering.

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“…Therefore, a reasonable control method must be adopted to improve the motor control performance, satisfy actual requirements, and ensure smooth motor operation. 1,2…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ultra-local model-free speed prediction control based on high-order sliding mode compensation for PMSM drives

Chen

2022

Advances in Mechanical Engineering

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Dual sliding mode control of linear maglev synchronous motor based on novel extended state observer

Lei,

Lan,

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part I:

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In order to improve the convergence speed and disturbance immunity of the linear maglev synchronous motor (LMLSM) maglev system, this paper proposes a dual sliding mode control strategy based on a novel expanded state observer (NESO). Firstly, a dual terminal sliding mode (DTSM) surface is designed, which exhibits the desired dynamic and steady state performance. The problem of the TSM singularity is solved by the dual sliding mode technique, which turns the control signal into a continuous switching control through the filtering function and effectively reduces the jitter problem. Since the maglev system is susceptible to uncertainties such as nonlinearity, strong coupling and external perturbations, which affect its tracking accuracy, a continuous smooth ESO is designed to estimate and compensate for these uncertainty perturbations, thus solving the problem that the traditional ESO is continuous but not derivable at the switching point. Then, it is proved that the DTSM control strategy based on NESO converges to the equilibrium point in finite time by Lyapunov function. Finally, the effectiveness and superiority of the proposed strategy are verified on the LMLSM maglev system platform.

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Speed Regulation and Optimization of Sensorless System of Permanent Magnet Synchronous Motor

Zhang

et al. 2023

Machines

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Aiming at the problems of speed overshoot, slow convergence and poor anti-interference in the control of permanent-magnet synchronous motors (PMSMs) without a position sensor, a pulse vibration high-frequency signal injection method for a permanent-magnet synchronous motor with an improved sliding mode control was designed. Firstly, the improved approach rate function is combined with the improved non-singular fast terminal sliding mode surface to design the non-singular fast terminal sliding mode controller (NFTSMC), which is used in the speed loop to improve the speed convergence ability and reduce its overshoot. Secondly, in order to eliminate the influence of the band-pass filter on the system bandwidth in the traditional high-frequency injection method, a pulse vibration high-frequency signal injection method that injects high-frequency voltage signals and synchronous current signals into the d^ axis of the estimated two-phase rotation coordinate system d^q^ and the αβ axis of the two-phase stationary coordinate system αβ was designed to estimate the motor position and speed to achieve sensorless control. Finally, the above control strategy was compared with the speed loop PI and the traditional sliding mode controller (SMC) of the speed loop, respectively. The simulation and experimental results show that whether it is a no-load variable speed or fixed speed loading, the above control strategy can effectively reduce the speed overshoot, accelerate the speed convergence and improve the load capacity of the system.

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A novel hierarchical nonlinear proportional-integral fast terminal sliding mode control for PMSM drives

Cited by 3 publications

References 47 publications

Ultra-local model-free speed prediction control based on high-order sliding mode compensation for PMSM drives

Ultra-local model-free speed prediction control based on high-order sliding mode compensation for PMSM drives

Dual sliding mode control of linear maglev synchronous motor based on novel extended state observer

Speed Regulation and Optimization of Sensorless System of Permanent Magnet Synchronous Motor

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