Yarn tension control system based on FFT control algorithm

The utility model discloses a yarn tension control system based on FFT control algorithm, including the yarn tension sensor, as sending the brushless DC motor of yarn motor, man -machine operation interface, MCU controller unit, AD processing circuit, DA processing circuit, brushless DC motor controller, motor drive control circuit, every MCU controller unit passes through the communication demonstration and is connected a TFT LCD screen with the parameter setting module, and a plurality of MCU controller unit are connected with same man -machine operation interface through CAN communication module separately, the tension value signal that tension sensor read spreads into MCU the control unit into via zooming of AD processing circuit, delivers to brushless direct current controller with the signal through DA processing circuit after FFT control algorithm's processing, and then through motor drive control circuit drive brushless DC motor. The utility model provides high tension control stability.