Driving apparatus

Details Driving apparatus Driving apparatus

2007-03-30

2010-11-02

Budd, Mark (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S309000, C310S328000

Reexamination Certificate

active

07825565

ABSTRACT:
A driving apparatus (100u) is provided with: a first base portion (110-1); a first stage portion (130-1); a first elastic portion (120-1) which has elasticity to displace the first stage portion in one direction (X axis); a second stage portion (130-2) which is disposed on the first stage portion and on which a driven object (12) is mounted; a second elastic portion (120-2) which has elasticity to displace the second stage portion in other direction (Y axis); a first applying device (141, 142, 143, 22) for applying a first excitation force for displacing the first stage portion such that the first stage portion is resonated in the one direction at a resonance frequency determined by the first stage portion and the first elastic portion; and a second applying device (161, 162, 22) for applying a second excitation force for displacing the second stage portion at a phase shifted by approximately 90 degrees from a phase of the displacement of the first stage portion such that the second stage portion is resonated in the other direction at a resonance frequency determined by the second stage portion and the second elastic portion.

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Hasebe, T et al., “Development of wide lateral stroke electro-magnetic actuator driven by low voltage”, IEEJ Sensors and Micromachines Society Sogo-Kenkyukai/Micromachines and Sensor Systems Kenkyu-Kai, No. MSS-06-12, (May 15-16, 2006), pp. 51-55.

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