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US 11,728,750 B2Granted
Vibration actuator having plural vibrators and inductors
AssigneeCanon Kabushiki Kaisha
InventorKenichi Kataoka
Life of this patent
Estimating the term…
Abstract
A vibration actuator that is capable of reducing difference of vibration velocities when a contact member is driven using a plurality of vibrators includes a vibrator device and the contact member, which moves relative to the vibrator device. The vibrator device includes the plurality of vibrators, which are connected in series, and a plurality of inductors, which are connected in parallel to the respective vibrators.
Claims18
A vibration actuator comprising:
- a vibrator device;
- and
- a contact member that moves relative to the vibrator device,
- wherein the vibrator device comprises:
- a plurality of vibrators that are connected in series, and
- a plurality of inductors that are connected in parallel with the plurality of vibrators, respectively.
3 more elements
A driving device for a vibration actuator equipped with a vibrator device and a contact member that move relatively and mutually, the driving device comprising:
- a drive signal generator that generates an alternating voltage applied to the vibrator device;
- an amplitude detector that detects amplitude of an electric current flowing to the vibrator device;
- and
- a drive signal controller that controls the alternating voltage that the drive signal generator generates according to the amplitude of the electric current,
- wherein the vibrator device comprises:
- a plurality of vibrators that are connected in series, and
- a plurality of inductors that are connected in parallel with the plurality of vibrators, respectively.
4 more elements
Dependencies are inferred from the claim text.