FPGA Based BLDC Motor Current Control with Spectral Analysis

This article presents two different approaches of brushless dc motor torque control, PI and discontinuous sliding mode regulator. Algorithms were implemented on NI 7831R board consisted of Xilinx FPGA device and peripheral (A/D and D/A converters). Frequency analysis of motor current has been made to demonstrate the influence of using specific control algorithm on the motor power signal frequency content.