Patent ID: 8274196

Claim:
A control apparatus for a vibration wave driven apparatus, wherein the vibration wave driven apparatus includes a vibration member including an electro-mechanical energy conversion element and an elastic member bonded to the electro-mechanical energy conversion element and provided with a projection portion, the vibration member exciting vibrations of two vibration modes in response to a drive signal applied to the vibration member, the vibrations of the two vibration modes being combined together to generate an elliptic motion of the projection portion, and a driving member including an end portion and moving relative to the vibration member by contacting the projection portion, and wherein the control apparatus detects the relative position between the vibration member and a driving-member-side vibration detection portion on a basis of a signal that shows a vibrational state of the vibration member and a signal output from the driving-member-side vibration detection portion provided on the driving member to detect a vibration of the driving member.