Design of Direct Current Motor Servo Control System Based on SOPC

Nios II is applied in direct current motor servo system as core microprocessor of FPGA system in this paper. A SOPC system is created by Qsys and Quartus II. Feedforward-feedback control algorithm is adopted and Fuzzy-PID is taken as the control algorithm of feedback. The position loop, velocity loop, and current loop control in the system improve both dynamic performance and static characteristic. Fuzzy adaptive PID control algorithm are achieved by Nios II, and simulated in MATLAB/Simulink. The whole system's analysis, synthesis, simulation and configuration are completed by Quartus II. Results show that this method improves both system responding speed, and tracking precision in DC motor servo system.