Method of damping actuator with translation mechanism and actuator
AssigneeAkita Prefecture
InventorShigeki Mori
Life of this patent
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Abstract
According to one embodiment, a method of damping an actuator to reduce an amplitude of a resonance peak of the actuator, including a piezoelectric element and a translation mechanism, includes securing one surface of a restraint member having at least two surfaces to a movable part of the translation mechanism with an elastic or viscoelastic body therebetween, securing the other surface of the restraint member to a support portion of the translation mechanism with an elastic or viscoelastic body therebetween, and converting vibration energy of the movable part into thermal energy, based on distortion caused by deformation of the elastic or viscoelastic body.
Claims14
A method of damping an actuator to reduce an amplitude of a resonance peak of the actuator, which comprises a piezoelectric element and a translation mechanism comprising a movable part, which is displaced as the piezoelectric element is displaced, and configured to directly transmit the displacement of the piezoelectric element as a rectilinear motion, the method comprising:
- securing one surface of a restraint member having at least two surfaces to the movable part with an elastic or viscoelastic body therebetween;
- securing the other surface of the restraint member to a support portion of the translation mechanism with an elastic or viscoelastic body therebetween;
- and
- converting vibration energy of the movable part into thermal energy, based on distortion caused by deformation of the elastic or viscoelastic body, to reduce the amplitude of the resonance peak of the actuator.
An actuator comprising:
- a piezoelectric element;
- a translation mechanism comprising a movable part configured to displace as the piezoelectric element is displaced, and configured to directly transmit the displacement of the piezoelectric element as a rectilinear motion;
- and
- a restraint member comprising at least two surfaces, one and the other of which are secured to the movable part and a support portion of the translation mechanism with an elastic or viscoelastic body therebetween, and configured to convert vibration energy of the movable part into thermal energy, based on distortion caused by deformation of the elastic or viscoelastic body to reduce an amplitude of a resonance peak of the actuator.
Dependencies are inferred from the claim text.