Research on permanent magnet synchronous motor algorithm based on linear nonlinear switching self-disturbance...

Area of Science:

• Control Systems Engineering
• Robotics and Automation
• Electrical Engineering

Background:

• Servo systems require robust speed controllers to maintain performance under external disturbances.
• Existing Linear Active Disturbance Rejection Control (LADRC) and Nonlinear Active Disturbance Rejection Control (NLADRC) have limitations in disturbance rejection.
• Active Disturbance Rejection Control (ADRC) principles are foundational but require enhancement for complex systems.

Purpose of the Study:

• To develop a novel control strategy, Switching Active Disturbance Rejection Control (SADRC), for enhanced disturbance rejection in servo systems.
• To improve the robustness and performance of speed controllers by combining linear and nonlinear control approaches.
• To validate the efficacy of SADRC through experimental comparison on a Permanent Magnet Synchronous Motor (PMSM).

Main Methods:

• Analysis of the mathematical model of the motor.
• Design of SADRC by integrating LADRC and NLADRC principles with a switching parameter.
• Parameter analysis to determine optimal ranges for the switching mechanism.
• Experimental validation using a PMSM to compare rotational performance against existing methods.

Main Results:

• The proposed SADRC strategy demonstrates improved disturbance rejection capabilities compared to traditional methods.
• The switching mechanism effectively balances linear and nonlinear control characteristics, enhancing system robustness.
• Experimental results confirm the superior performance of SADRC in controlling the speed of a PMSM.

Conclusions:

• SADRC offers a significant advancement in servo system speed control by effectively handling disturbances.
• The hybrid linear-nonlinear approach provides enhanced robustness and performance, making it suitable for demanding applications.
• The study validates SADRC as a promising control strategy for improving the dynamic performance of servo systems.