Cedrat Technologies, innovation in mechatronicsCedrat Technologies, innovation in mechatronics

Cedrat Technologies, innovation in mechatronics

Device & Systems

Actuators in adaptronics: piezoelectric actuators

Piezoelectric actuators have increased their number of application in adaptronics over the past decade [1]. They can be used with several drive and control strategies and they are more adapted to mechatronics applications requiring bandwidth, accuracy and/or lightweightness. The purpose of this paper is to recall the different existing piezo actuators, the different drive and control techniques and finally review several applications in machine tools, optics.


Rosetta Midas successful launching

Successful commissioning of the first flight application for C. T. in ESA / ROSETTA mission. The ROSETTA satellite has been successfully launched the 2nd of March 2004 from Kourou, French Guyana, using an Ariane-5 G+ launcher. The rendezvous with the new targeted comet “Churyumov - Gerasimenko” is expected in November 2014.


Tool adaptor for active vibration control in turning operations

A tool adaptor with built-in active vibration damping device to dynamically stabilize the turning process is presented in this paper. It can be used in standard CNC-lathes and allows the usage of off-the-shelf tool heads. The vibration compensation system is based on a multilayer piezoactuator that is in collocation with a piezoelectric force sensor. An analogue controller based on the integral force feedback method is used for active damping.


Driving control electronics piezoelectric actuators space applications

Piezoelectric mechanisms are more and more used in space applications requiring precise positioning functions for scientific payloads or optical functions. Indeed, piezoelectric actuators are generally deemed of being good candidates for driving and control compact mechanisms.


LA75B powerful electronic for piezo actuators

LA75B : A powerful electronic that makes APA sing higher in volume and larger in frequency.


Aero India 2003 Piezo actuators air & space

Several classes of Piezo Actuators based on low voltages piezo ceramics have been developed by CEDRAT TECHNOLOGIES in order to cover needs for long stroke, precise and/or fast positioning in the fields of air & space applications. A specific class of Amplified Piezo Actuators, so called APA has been patented, developed and qualified. Their applications concern subjects as various as Scientific Instruments for Space payloads (Telescopes, Microscopes), Micro-Satellites Propulsion Valves or Active flaps of Helicopter Blades.


XY200M a new design of piezo stage

The XY200M is an XY piezo stage coming from CEDRAT TECHNOLOGIES lab and which was newly designed according to space needs defined with CNES (the French space agency). This XY stage benefi ts from the heritage of a former XY stage developed for ESA (European Space Agency) in the frame of Rosetta / Midas space mission which will launch in the beginning of 2003. It is based on two pairs of APA200M, Amplifi ed Piezo Actuators displaying 200 µm of stroke each, arranged in cross configuration around a central ring.