Design of fractional PID control system for BLDC motor based on FPGA

In this pape, pricision brushless DC motor control system based on field programmable gate array (FPGA) was designed. The system consists of two parts: FPGA and peripheral circuits. FPGA as the control core of the whole circuit, through the hardware programming language VerilogHDL programming FPGA internal hardware circuit to complete fractional PID control algorithm, based on fractional PID control mode to achieve the appropriate duty cycle PWM output controller design. The simulation results show that the fractional-order PID controller based on FPGA has the advantages of simple structure, flexible control and strong anti-interference ability, meanwhile meets the actual requirements of motor speed regulation.