A Novel Position Speed Integrated Sliding Mode Variable Structure Controller for Position Control of PMSM

With the increasingly widespread application of permanent magnet synchronous motors (PMSMs), it is required that PMSM can still maintain high efficiency and high reliability in complex environments. Due to the nonlinearity of PMSMs and the influence of external disturbances, its precise control is still a challenge. As a modern control scheme, sliding mode control can improve the control PMSM drive system. It has been successfully applied in the control of PMSMs and has become a hot spot in the motor drive system. This paper provides an overview of the current research status of sliding mode control strategies based on PMSMs and introduces the design of sliding mode controllers, as well as the development and application of high-order sliding mode control. The method of suppressing the chattering problem is summarized, and the deficiencies of it are put forward. Finally, the development trend of sliding mode control technology is discussed, and the future development direction of SMC for PMSM is prospected.

Section: Introductionmentioning

confidence: 99%

Overview of Sliding Mode Control Technology for Permanent Magnet Synchronous Motor System

Li,

Ding,

Sun

et al. 2024

“…In [33], considering that the complexity of existing safety controls were determined by the geometrical properties of the environment, a variable structure control was proposed to isolate the environment's geometrical complexity from the control structure. A variable exponential reaching law based on position error and a saturation function was suggested in [34] as an adjustable structure controller for position tracking speed and chattering performance, in order to optimize both. In [35], a variable structure control approach was proposed for vehicles platooning based on a hierarchical fuzzy logic.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Hybrid Compensation Control of Inertia Uncertainty and Disturbance for Variable Structure Hypersonic Vehicle

Hu,

Cheng,

Yang

2023

This paper presents an adaptive hybrid compensation scheme for disturbances and uncertain inertia parameters of variable-structure hypersonic flight vehicles (HFV). A nominal nonlinear dynamic inverse (NDI) controller with variable-structure harmonic functions guarantees that the system outputs precisely follow the reference commands for a longitudinal HFV model with modelling errors. In the case of inertia uncertainty, a multi-learning law-adaptive NDI controller is proposed to directly compensate for its influence on the tracking performance, which makes the variable-structure HFV robust to inertia uncertainty and reduces the high vibration of velocity and attitude angles. Subsequently, an improved adaptive variable structure NDI controller with a sliding-mode disturbance observer is designed to actively compensate for sea-skimming disturbances and continuously ensure anti-disturbance flight quality. Finally, the active-passive hybrid adaptive control algorithms compensate for the inertia uncertainty and disturbance of the variable-structure HFV. The proposed method's efficacy was verified through a semi-physical system simulation, while Lyapunov functions demonstrated the system stability.

“…The dynamic response of the system is determined by the sliding surface [14]- [15]. Unfortunately, the conventional sliding mode surface can only guarantee that the system states exponentially converge to the equilibrium origin in infinite time [16].…”

Section: Introductionmentioning

confidence: 99%

Generalized Adaptive Disturbance Observer Based Global Terminal Sliding Mode Control for PMSM With Measurement Noise

Wang,

2023

Improving the robustness and dynamic response of permanent magnet synchronous motor (PMSM) drive systems under the influence of measurement noise is a hot topic. Aiming at this issue, a generalized adaptive disturbance observer (GADO) based global terminal sliding mode speed control (GTSMC) scheme is proposed for PMSM. Firstly, a novel terminal sliding surface ensuring that the initial system operates in sliding mode is introduced, and the GTSMC controller is thus derived. Further, a current decoupling controller based on the linear extended state observer (LESO) is designed to realize the accurate dynamic decoupling. Regarding the undesirable chattering of GTSMC, a disturbance attenuation scheme based on generalized adaptive disturbance observer (GADO) is proposed. The uncertain disturbances are estimated by the GADO, and equivalent compensation is introduced. Different from the conventional fixedgain disturbance observer, the influence of measurement noise is considered and the generalized adaptive gain mechanism is introduced to the GADO. The gain of the GADO can be adaptively adjusted according to the operating state, in which the excellent dynamic response and low sensitivity to measurement noise are guaranteed. Finally, the proposed control scheme for PMSM are tested through simulation, and the results verify its excellent performances in terms of speed tracking, robustness against uncertainties, and sensitivity to measurement noise.