Abstract:It is difficult to establish accurate model of DC servo system,and the system robustness is poor when using the traditional PI controller.Aimed at the control problem of DC servo system,the PI controller based on field programmable analog array was used to realize the effective control of DC servo system,and the control effect was simulated and verified.The mathematical model of the DC servo system was established and its motion equation was constructed.A PI control system based on field programmable analog array was designed in parallel combination of relay and PI controller.The DC servo system was simulated by using the MATLAB software,and the simulation results were compared and analyzed with the traditional PI controller.The results show that the DC servo system of PI controller based on field programmable analog array can generate nonovershooting response,the tracking performance is significantly improved,the fluctuations are quickly eliminated within 0.4 s,and the required control voltage is reduced by about 50%