This paper describes the driving at a resonance point of an elliptical vibratory machine that consists of a horizontal vibratory system and a vertical vibratory system. The driving of the vibratory machine by self-excited vibration, which is generated by positive feedback of velocity, follows the change of resonance frequency automatically and reduces electric power consumption. The resonance of frequency of the horizontal system and that of the vertical system cannot be completely made in agreement, so then self-excited vibrations in both systems differ in frequency. The synchronization control using frequency entrainment drives both systems at the same frequency in the middle of the two resonance frequencies, and both systems can vibrate in a state of near resonance frequency. Furthermore, phase shift filters in the synchronization controller give a desired phase difference between horizontal vibration and vertical vibration. By combining self-excited vibration driving and the synchronization control, an elliptical vibration locus can be kept constant and an elliptical vibratory machine can be driven efficiently.