PZT piston driven hydraulic pump development

Author

Oates, William S. ; Mauck, Lisa D. ; Lynch, Christopher S.

Author_Institution

George W. Woodruff Sch. of Mech. Eng., Georgia Inst. of Technol., Atlanta, GA, USA

Volume

2

fYear

2000

fDate

2000

Firstpage

733

Abstract

Piezoelectric materials operated at high frequency and large electric field can produce very high power densities. The difficulty with utilizing this power density in motor applications is the very small stroke produced by piezoelectrics. Stroke rectification is implemented to obtain a high power density device. This has been accomplished using a piston driven hydraulic pump. Rectification of fluid power is obtained using check valves. Details of the design and characterization of the resulting pump are presented. The thermodynamic cycle of a piezoelectric stack actuator in a piezo-pump application is also illustrated

Keywords

electrohydraulic control equipment; lead compounds; piezoelectric actuators; pumps; rectification; PZT; PZT piston; PbZrO3TiO3; check valve; fluid power density; hydraulic pump; motor applications; piezoelectric stack actuator; piezohydraulic pump; stroke rectification; thermodynamic cycle; Fluid flow; Hydraulic actuators; Impedance matching; Piezoelectric actuators; Piezoelectric materials; Pistons; Pumps; Springs; Thermodynamics; Valves;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 2000. ISAF 2000. Proceedings of the 2000 12th IEEE International Symposium on

Conference_Location

Honolulu, HI

ISSN

1099-4734

Print_ISBN

0-7803-5940-2

Type

conf

DOI

10.1109/ISAF.2000.942424

Filename

942424