Control apparatus for vibration type motor, and driving apparatus
AssigneeCanon Kabushiki Kaisha
InventorHirotaka SHINDO
Life of this patent
Estimating the term…
Abstract
A control apparatus for a vibration type motor includes a processor or circuit that serves as a driving signal generating unit configured to generate a driving signal of the vibration type motor; and a booster circuit configured to boost the driving signal. The driving signal generating unit changes a duty ratio of the driving signal based on a driving frequency of the vibration type motor or a current flowing through the vibration type motor.
Claims18
A control apparatus for a vibration type motor, the control apparatus comprising:
- a processor or circuit that serves as a driving signal generating unit configured to generate a driving signal of the vibration type motor;
- and
- a booster circuit configured to boost the driving signal,
- wherein the driving signal generating unit changes a duty ratio of the driving signal based on a driving frequency of the vibration type motor.
A control apparatus for a vibration type motor, the control apparatus comprising:
- a processor or circuit that serves as a driving signal generating unit configured to generate a driving signal of a vibration type motor;
- and
- a booster circuit configured to boost the driving signal,
- wherein the driving signal generating unit changes the duty ratio of the driving signal based on a current flowing through the vibration type motor.
A driving apparatus comprising:
- a vibration type motor;
- a driven member to be driven by the vibration type motor;
- a processor or circuit that serves as a driving signal generating unit configured to generate a driving signal of the vibration type motor;
- and
- a booster circuit configured to boost the driving signal, the driving signal boosted by the booster circuit being applied to the vibration type motor,
- wherein the driving signal generating unit changes a duty ratio of the driving signal based on a driving frequency of the vibration type motor.
A driving apparatus comprising:
- a vibration type motor;
- a driven member to be driven by the vibration type motor;
- a processor or circuit that serves as a driving signal generating unit configured to generate a driving signal of the vibration type motor;
- and
- a booster circuit configured to boost the driving signal, the driving signal boosted by the booster circuit being applied to the vibration type motor,
- wherein the driving signal generating unit changes a duty ratio of the driving signal based on a current flowing through the vibration type motor.
Dependencies are inferred from the claim text.