Modified Super-Twisting Algorithm-Based Model Reference Adaptive Observer for Sensorless Control of the Interior Permanent-Magnet Synchronous Motor in Electric Vehicles

Machines, Journal Year: 2023, Volume and Issue: 11(9), P. 871 - 871

Published: Aug. 29, 2023

In this paper, the model reference adaptive system (MRAS) method has been employed to observe speed in sensorless field-oriented control (FOC) with flux weakening (FW) and maximum torque per ampere (MTPA) operations for interior permanent-magnet synchronous motor (IPMSM). This paper focuses on modified MRAS observer, which is based sigmoid function as a switching also sliding mode coefficient. The strategies are adaptation mechanism instead of PI controller. conventional PI-MRAS causes oscillations rotor speed. To solve problem, super-twisting algorithm (STA)-based proposed by utilizing function. compared methods. Additionally, it examined performance against fast terminal (FTSM), applied an terms strategies. STA-MRAS explored under ECE EUDC (Extra Urban Driving Cycle) drive cycles electric vehicle applications. Finally, obtained results show validity capability tracking.

Language: Английский

Sliding-Mode Active Disturbance Rejection Control for Electromagnetic Driven Compliant Micro-Positioning Platform

Applied Sciences, Journal Year: 2023, Volume and Issue: 13(3), P. 1309 - 1309

Published: Jan. 18, 2023

At the field of nanometer positioning and machining, high-precision tracking is a key technology micro-positioning platform which driven by voice coil motor. To improve accuracy response speed, sliding-mode active disturbance rejection control proposed. The mathematical model system established, in perturbation spring-damping force are set as unknown terms, an extended state observer used to estimate compensate for terms. robustness system, equivalent term constructed replace PD conventional rejection. Further, stability proved Lyapunov theory, compared with controller, effectiveness proposed strategy verified simulation.

Language: Английский