Device for controlling a piezo-electric positioning element

Details Device for controlling a piezo-electric positioning element Device for controlling a piezo-electric positioning element

G - Physics

11

B

352/23, 342/29

G11B 21/02 (2006.01) B06B 1/06 (2006.01) G11B 5/56 (2006.01) G11B 5/592 (2006.01) G11B 7/09 (2006.01) G11B 21/24 (2006.01) H01L 41/04 (2006.01)

Patent

CA 1132229

24.11.78 1 PHN 9134 ABSTRACT: Device for controlling a piezo-electric positioning element. A device for controlling a piezo-electric po- sitioning element. In order to ensure that said element occupies a well-defined rest position, the device com- prises a circuit for generating an electrical oscillation whose amplitude decreases to zero as a function of time and which varies symmetrically about a reference value, and for applying said oscillation to the piezo-electric element, so that hysteresis effects are eliminated.

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