Actuator unit, driving device for information...

Details Actuator unit, driving device for information... Actuator unit, driving device for information...

2008-01-14

2010-10-05

Benson, Walter (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S317000, C360S072100

Reexamination Certificate

active

07808154

ABSTRACT:
An actuator unit including a friction drive actuator, a driving device for information recording/reading head, an information recording/reading apparatus and a method for driving the actuator unit which can achieve both high precision and high speed is provided by waiting the residual vibration to attenuate or forcibly attenuating the residual vibration to achieve high speed positioning by driving the friction drive actuator in the expansion and contraction mode after a high speed movement in the resonant drive mode.

REFERENCES:
patent: 4167763 (1979-09-01), Kubota
patent: 2003/0112547 (2003-06-01), Koso et al.
patent: 2005/0030325 (2005-02-01), Sugiyama et al.
patent: 2005/0112278 (2005-05-01), Obata et al.
patent: 2006/0108964 (2006-05-01), Shibatani
patent: 2006/0170718 (2006-08-01), Takahashi et al.
patent: 2001-222869 (2001-08-01), None
patent: 2004-274837 (2004-09-01), None

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