A state feedback control with compensation for permanent magnet synchronous machine drives.

Area of Science:

• Electrical Engineering
• Control Systems Engineering

Background:

• Linear control approaches remain prevalent in system design.
• Improving the dynamic response and disturbance rejection of permanent magnet synchronous machine (PMSM) speed regulation systems is crucial.

Purpose of the Study:

• To enhance the dynamic response of PMSM speed regulation systems.
• To improve the anti-disturbance performance of PMSM speed control.

Main Methods:

• A third-order augmented system was constructed for enhanced disturbance rejection.
• State feedback control (SFC) parameters were optimized using linear quadratic regulator (LQR).
• A disturbance observer (DOB) based on a Luenberger observer was designed to address uncertainties.

Main Results:

• The proposed speed controller exhibited an increased order, leading to better disturbance rejection.
• The influence of the LQR's matrix Q on dynamic performance was analyzed using Bode diagrams.
• Experimental results validated the effectiveness of the integrated SFC and DOB approach.

Conclusions:

• The combination of SFC and DOB significantly improves PMSM speed regulation performance.
• The proposed control strategy offers robust performance against parametric uncertainties and unmodeled dynamics.
• This research provides a validated method for advanced PMSM speed control.