Driving power unit for piezoactuator system and method

Details Driving power unit for piezoactuator system and method Driving power unit for piezoactuator system and method

1991-04-29

1992-08-11

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310317, 310318, 310319, H01L 4108

Patent

active

051382172

ABSTRACT:
A driving power unit for a piezoactivator is disclosed that utilizes a semiconductor switching device for supplying power to the piezoelement. When the voltage measured across the piezoelement attains a predetermined valve, the semiconductor switching device turns off. Sensing devices cause the switching device to turn on upon the voltage dropping by a predetermined margin and cause the voltage source to turn off when the switching device remains on beyond a predetermined time period. Memory and logic circuitry also control the switching sequence of the switching device.

REFERENCES:
patent: 3742492 (1973-06-01), Proctor
patent: 4507762 (1985-03-01), Meyer et al.
patent: 4714935 (1987-12-01), Yamamoto et al.
patent: 4866326 (1989-09-01), Niikawa et al.
patent: 4947074 (1990-08-01), Suzuki

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