System for controlling a piezoelectric actuator, in...

Details System for controlling a piezoelectric actuator, in... System for controlling a piezoelectric actuator, in...

2005-09-13

2005-09-13

Budd, Mark (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

Reexamination Certificate

active

06943480

ABSTRACT:
The system makes it possible to control at least one piezoelectric actuator having a capacitive impedance and includes a source of voltage, a control circuit branch in parallel with the source, in which the actuator is connected in series to two electronic switches each having a respective parallel diode; an energy accumulating inductor with one terminal connected between the said switches and the other connected to the voltage source; and an electronic unit operable to control the said controlled switches according to predetermined modes of operation.

REFERENCES:
patent: 4688536 (1987-08-01), Mitsuyasu et al.
patent: 6081062 (2000-06-01), Hoffmann et al.
patent: 6137208 (2000-10-01), Hoffmann et al.
patent: 6147433 (2000-11-01), Reineke et al.
patent: 6617754 (2003-09-01), Knauss
patent: 199 27 087 (2000-12-01), None
patent: 2 793 598 (2000-11-01), None

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