Actuator and method for driving acuator
AssigneeThe School Corporation Kansai University
InventorYoshiro Tajitsu
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Abstract
An actuator is provided which can be driven with a simple configuration and by simple control. The actuator comprises a thin film made of a shear piezoelectric material, a first electrode formed on a first main surface of the thin film, and a second electrode formed on a second main surface of the thin film. The actuator is characterized in that driving force is generated on at least one end edge of the thin film by applying a predetermined AC voltage between the first electrode and the second electrode.
Claims8
An actuator comprising:
- a thin film made of a shear piezoelectric material;
- a first electrode formed on a first main surface of the thin film;
- and
- a second electrode formed on a second main surface of the thin film, wherein
- driving force is generated on at least one end edge of the thin film by applying a predetermined AC voltage between the first electrode and the second electrode, and
- the predetermined AC voltage has a frequency displaced by a predetermined value from a resonant frequency of a standing wave in longitudinal waves generated on the thin film.
A method for driving an actuator including a thin film made of a shear piezoelectric material, a first electrode formed on a first main surface of the thin film, and a second electrode formed on a second main surface of the thin film,
- the method comprising:
- applying a predetermined AC voltage between the first electrode and the second electrode to generate driving force on at least one end edge of the thin film, wherein
- the predetermined AC voltage has a frequency displaced by a predetermined value from a resonant frequency of a standing wave in longitudinal waves generated on the thin film.
Dependencies are inferred from the claim text.