Implementation of Speed Frequency Response Estimation Method for SPMSM Drive Systems

Key Points

• This research aims to propose a method for estimating the open-loop frequency response of the speed control loop in SPMSM drive systems.
• Generated linear chirp signals in the motor drive's microcontroller unit.
• Applied current commands to the current controller based on the chirp signal.
• Measured the speed response and transmitted input-output data to an external PC via Ethernet.
• Used Fast Fourier Transform (FFT) to estimate frequency response and visualized results.
• Successfully estimated the magnitude and phase frequency response of the speed control loop.
• Reliably derived key dynamic characteristics, including 0 dB crossover frequency and phase margin.

Abstract