Force Piezo Actuators0 pages

Force Piezo Actuators
For more information, please contact:
CEDRAT TECHNOLOGIES
15 Chemin de Malacher - Inovallée
38246 Meylan Cedex - France
actuator@cedrat.com
Phone: +33 (0)4 76 90 50 45 - Fax: +33 (0)4 56 38 08 30
CEDRAT
GROUPE
www.cedrat.com
Objective
Force Piezoelectric Actuators (FPA) are new long stroke linear piezo actuators for micro/nano
positioning applications where high forces or stiffness are required. They operate by accumulation
of small steps in motor mode to achieve large displacements or as a standard direct piezoelectric
actuator in fine position mode to achieve high resolutions. All the while they offer large force and
stiffness in a miniature casing. Using an adaptation card, this type of actuator can be powered using
a single channel from any Cedrat Technologies linear amplifiers (CA45 or LA75 families).
In summary, FPAs offer:
• High force and high stiffness in a small volume
• Blocking at rest in any position (locking without power supply)
• Nano positioning resolution all along the stroke
• Non magnetic behavior
• Single channel power amplifier and low current consumption
Performances
Typical performances are given in the following table. This table is not exhaustive as many other
actuators can be designed by Cedrat Technologies using its design tools, lab facilities and technological
know-how.
Applications
Force Piezoelectric Actuators (FPA) find applications as micro/nano positioning, locking mechanism,
valves actuators. Rugged versions can be developed for vacuum and/or low temperature environments
as encountered in space or cryogenic applications.
For short strokes, FPA are in competition with Amplified Piezoelectric Actuators from CEDRAT
TECHNOLOGIES. For long stroke, they are in competition with Magnetic Actuators, which are
technologies also mastered by CEDRAT TECHNOLOGIES.
References Unit FPA30 FPA70
Notes Preliminary Preliminary
Stroke mm limited only by shaft length limited only by shaft length
Blocking force at rest N 40 100
Actuation force N 30 70
Stiffness N/ìm >50 0-150
Speed (using LA75B power amplifier) mm/s 4,4 1,4
Fine position stroke ìm 10 10
Fine position max. frequency kHz 15 7
Fine position resolution nm <1 <1
Diameter x length mm Ø15 x 20 Ø25 x 25
Mass g 11 36
Copyright © CEDRAT Group October 2008