Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1997-07-28
1999-06-15
Dougherty, Thomas M.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
H02N 200, H01L 4108
Patent
active
059125276
ABSTRACT:
An inertial positioner comprising a base plate and a carriage plate (2) slidably connected to one another via a bearing assembly (3) so as to allow relative movement of the plates in a positioning direction. The bearing assembly (3) comprises two sets of caged ball bearings seated in respective pairs of V-grooves (25 and 26) formed in the facing surfaces of the base and carriage plates, the V-groove pairs extending spaced apart in the positioning direction. An actuator comprising a piezoelectric element (4) and a rod (5) extends between the plates (1 and 2), the piezoelectric element (4) being secured to the carriage plate (2) and the rod (5) forming a frictional engagement characterized by a force F with the base plate via a collar (20) fastened to the base plate via biasing means (not shown). In operation, a periodic saw-tooth voltage is applied to the piezoelectric element (4) to produce motion.
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Dougherty Thomas M.
Dr. Khaled Karrai Und Dr. Miles Haines Gesellschaft Burgerlichen
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