A new type of electrodynamic exciter was proposed based on resonant effects in this paper. A PID frequency tracking method was studied to keep the driving frequency consistent with the resonant frequency. The circuit system model of the electrodynamic vibration exciter was built and its impedance characteristics were obtained. It was established that the relationship of between the phase difference and different frequency by simulation. The influence of the output time and stability of the PID parameters were considered, and the parameters were optimal selected, which improved the frequency tracking accuracy of the exciter and speed up the output response speed by 10%.