Sliding mode control with an adaptive switching power reaching law

Area of Science:

• Electrical Engineering
• Control Systems
• Robotics

Background:

• Permanent magnet synchronous motors (PMSMs) are widely used in industrial applications.
• Maintaining precise velocity control in PMSMs is challenging due to internal and external perturbations.
• Existing control methods often suffer from chattering and slow response times.

Purpose of the Study:

• To propose an adaptive reaching law-based sliding mode control (SMC) method for PMSMs.
• To enhance velocity control performance under various disturbances.
• To reduce control system chattering and improve response speed.

Main Methods:

• Design of an adaptive switching power reaching law (ASPRL) incorporating adaptive terms and sliding mode surface variables.
• Development of a Luenberger observer load torque (LOLT) for external load observation and feedback.
• Integration of ASPRL and LOLT for robust velocity control of PMSMs.

Main Results:

• The proposed ASPRL significantly reduces control system chattering (buffeting).
• The system demonstrates a decreased overshoot and a shortened response time.
• The LOLT effectively mitigates the impact of load disturbances, improving jamming performance.

Conclusions:

• The adaptive reaching law-based SMC method offers superior performance for PMSM velocity control.
• The combination of ASPRL and LOLT provides a robust solution for handling perturbations.
• This approach enhances the overall efficiency and reliability of PMSM systems.