NEWSLETTER FROM CTEC
 
 > BEST WISHES!
 
CTEC wishes you a Happy New Year 2014. May it bring you peace, health and prosperity in your personal and professional life !
This year has been a year of transformation for CTEC. On July 1st, 2013, the company moved to larger premises to accommodate its continued growth. Investments have been made to improve the production capacity and new co-workers have joined us to meet our clients requirements.
 
CTEC keeps on intensifying its sales presence and reinforcing its teams to perpetrate its Expertise as a specialist of compact, dynamic and precise solutions. 
 
 
Yours faithfully,
 
CTEC Team

> RECOGNITION!
 
CTEC has been placed in 3rd position in the ranking list of the most successful SME's in Isère (the Grenoble county). This ranking lists more than 1000 companies and accounts for both their growth and financial health. 
 
CTEC Tripod Actuator (TrAC) based on 3 LSPA piezo motors is selected to illustrate the leaflet for the ACTUATOR 2014 conference on new Actuators.
 
CTEC Tripod Actuator (TrAC) is also selected for being exposed in the ZOOM on MICRO MECHATRONICS at MICRONORA 2014 exhibition on micro techniques.
 

> SA75: A NEW HIGH POWER PIEZO DRIVER  
 
CTEC is proud to announce the release of its new High Power Amplifier range: SA75A - SA75B - SA75D
 
The SA75X is a portfolio of switching power amplifiers that has been developed to drive large piezo-actuators between -20V and +150V in dynamic conditions, with energy recovery capabilities. The SA75D is able to produce an output average current up to 20A, which is a world record for piezo drivers.
The main drawback of the switching amplifiers is the output ripple, which limits the voltage resolution. In order to optimize the resolution, the amplifiers are designed to switch at very high frequency (typically few 100kHz), and the amplifier operates in closed-loop to ensure that the output voltage is equal to what is commanded.             
 

 HIGH POWER AMPLIFIER
 SA75 
From the performance point of view, the SA75D is the most powerful, with an output average power up to 1.32kVA. The OEM version has a weight of approximately 1.5kg, and dimensions of 100x100x100mm, i.e. 1 liter. The power ratio of the solution is thus of 1.32kVA/L, and 0.88kVA/kg. Those power ratios are much higher than the power ratios of the linear amplifiers, which are closer to 0.1kVA/L and 0.07kVA/kg for the LA75C (most powerful version of the linear portfolio).
These COMPACT, DYNAMIC & PRECISE SA75X piezo drivers are adapted to air & space applications as well many other applications for low volume & low energy is required.  
OVERVIEW OF THE
POWER CORE
We invite you to visit our web pages dedicated to our electronics via the links below:
http://www.cedrat-technologies.com/en/mechatronic-products/driving-electronics.html
 
 

> INCREASE OF PRODUCTION CAPACITY
 
CTEC has increased its manufacturing base to supply growing demand for its  products and technologies. Batches of standard products are frequently launched into production to ensure the availability of the product line as well as hundreds of recurrent specific products.
 
-Production capacity has been tripled since september 2013.
 
-Manufacturing activities take place in class ISO5 and ISO7 rooms, allowing controlled level of contamination in ultra cleanliness fields.
 
-3 new co-workers have joined the production team.
 
 CLEAN ROOMS

To know more about our manufaturing capacities feel free to visit our dedicated web pages:  http://www.cedrat-technologies.com/en/services/manufacturing.html 
 

> CTEC CONTRIBUTION IN SPACE PROJECTS
 
CTEC has been involved for more than a decade in various space projects and has reached the required standards and recurrent production for several building blocks to obtain customized products.
 
Since beginning 2012, the space activities of CTEC have significantly increased with several projects involving both piezo electric and magnetic actuator functions, among them:
  • EARTHCARE ATLID BSA / Collaboration with SODERN
SODERN has been selected by ASTRIUM for the supply of BSA (Beam Stearing Mechanism Assembly) on ATLID (a lidar for ESA Earthcare mission). BSA is a mirror installed on a dual-axis mechanism aiming to fine-control ATLID laser beam direction. In this context, CTEC was sub-contracted by Sodern to design, manufacture and test the performances of Beam Steering Mechanism flights models. 
 
Work progress:
CTEC is proud to announce that EQM qualification is in progress (>70%) and the vibrations campaign successfully passed. The MRR FM is approved i.e Authorization to proceed with Flight models manufacturing. 
  • ECHO CFSM / Collaboration with ESA
The use of cryogenic fine steering mechanism (CFSM) for astrophysics mission such as ECHO could ensure the stability of line of sight when used in closed loop within the AOCS. In the frame of ESA’s CTP work plan, a limited high precision tip tilt mechanism has been designed to produce +/- 0.75 arcsec Rx and Ry rotation within a cryogenic environment.
 
Work progress:
This Engineering model has been built and tested at ambient temperature with promising results. Cryogenic tests are being performed: next months objective is to demonstrate the mechanism ability to work under cryogenic conditions (30K). A focus on stability (<0.1 arcsec) and resolution (<1marsec) is expected. 
  • SOLAR ORBITER SPICE / Collaboration with ESRT
Solar Orbiter is a mission dedicated to solar and heliospheric physics. The Spectral Imaging of the Coronal Environment (SPICE) instrument is an EUV imaging spectrograph designed to observe both on the solar disk and out in the corona to remotely characterize plasma properties at and near the Sun. CTEC manufactures, assemblies integrates & tests parallel prestressed actuators PPA80L motorizing the SFM (scan focus mechanism) aiming at scanning with the primary mirror on the SPICE instrument. 
 
Work progress:
QM (Qualification Model) tested and qualified
FMs (Flight Models) will be delivered end of february 2014 
  • MTG SCA / Collaboration with SENER 
The European Organisation for the Exploitation of Meteorological Satellites, hereinafter referred to as “EUMETSAT”, is implementing its Meteosat Third Generation (MTG) programme, leading to an MTG System including six satellites. This mission will be fulfilled by series of 4 imaging satellites (MTG-I) and 2 sounding satellites (MTG-S).
The MTG instruments are located on a new generation of GEO SC, 3 axes stabilized. The scanning of the Earth along the E/W and the S/N directions shall be ensured by the Scan Assembly (SCA) Mechanisms located ahead the Instruments, corresponding to challenging high-precision pointing requirements. Under THALES ALENIA SPACE & KAISER THREDE contractor ship, SENER subcontracted CTEC for the development of the Rotating Voice Coil Motors of the Scan Mechanisms.
 
Work progress:
2 Elegant breadboard (EBB) have been designed in 2013 and under test for performances validation.
1 Qualification model (QM) is foreseen for full space qualification in the 2014.
2 Engineering models (EM) and 16 Flight models (FM) are foreseen after Qualification review in the 2015. 
  • MTG IRS Corner cube assembly / Collaboration with CSEM 
Meteosat Third Generation (MTG) includes 2 sounding satellites MTG-S supporting the Infrared Sounder (IRS) and accommodating the Sentinel 4 UVN instrument. The Infrared Sounder (IRS) on MTG-S will be able to provide unprecedented information on horizontally, vertically, and temporally (4-dimensional) resolved water vapour and temperature structures of the atmosphere. The IRS is based on an imaging Fourier-interferometer involving a Corner Cube Mechanism (CCM), to be developed by CSEM for THALES ALENIA SPACE.
For the motorisation of this CCM mechanism, CSEM has subcontracted CTEC who will procure the requested Linear Voice Coil Motors.  
 
Work progress:
LLI (soft magnetic parts + permanent magnets) ordered
Stator mechanical parts are being manufactured
EQM qualification expected for beginning of march 2014  
  • TARANIS BRUCE / Collaboration with the CNES 
Upon request of CNES, the French National Space Agency, CEDRAT TECHNOLOGIES has designed a resettable electromagnetic actuated pin puller, called BRUCE (Broche Rétractable Utilisant une Commande Electromagnétique ). Its specifications make it able to cover a wide range of spatial applications where moving parts must be secured during launch. This ECSS standards compliant latch called BRUCE is triggered when supplied with an 8A signal and the unlocking time is under 100ms. It has been designed to operate from -150°C up to 150°C and under high axial and radial loads.
 
Work progress:
2 Engineering Models have been successfully tested in 2012 and an RCD have been passed.
2 Qualification models are being produced which will undertake full space qualification.
Qualification review and production of 3 Flight Models are foreseen for 2014
  • The SWARM satellite mission successfully launched! 
Swarm is a European Space Agency (ESA) mission to study the Earth's magnetic field. ESA’s three-satellite Swarm constellation was lofted into a near-polar orbit by a Russian Rockot launcher on November 2013. 
  
In the frame of this mission CTEC qualified and delivered the following products:
- Non-magnetic rotary piezo motors destinated to a magnetometer from the CEA
- Mecanism for laser cavity adjustement HPPA-20 (the Hollow Parallel Pre-stressed Actuator) which is a Direct Piezo Actuator with a 8mm diameter internal hole available for an optical function. The pre-stress is applied through a monolithic pre-stressing body avoiding stick slip effects. 
 
To get more information about our knowlegde in space applications feel free to contact us at actuator@cedrat-tec.com
 

> FOCUS ON CTEC ELECTROMAGNETISM PROJECTS  
  • Electrification of a variable valve train with 3 degrees of freedom for gasoline engines (e-Lift3)
This year CTEC has invested in the design, manufacturing and test of electromagnetic actuators. These actuators are presently used in various industrial and collaborative projects. Among them e-Lift3 in which CTEC is working in collaboration with Valeo, PSA, Danielson Engineering, EMC, PRISM (Poly’Tech Orléans) and SATIE labs (ENS Cachan)...
  • FluMIn3 : Magnetic Actuator Conception for Medical Injection
The FluMIn3 project, coordinated by Eveon, a Grenoble-based start-up, deals with a new generation of medical injection device, miniaturized and automated, suitable for any type of injection : intradermal, subcutaneous or intramuscular. In this frame, CEDRAT TECHNOLOGIES is involved in the actuator conception used for the micro-pump’s actuation.
To know more about this project...


> CONFERENCE ACTUATORS 2014: TRAINING SESSIONS & PAPERS FROM CTEC  

CEDRAT TECHNOLOGIES will participate to the
14th International Conference on New Actuators
to be held on June 23 to 25, 2014, in Bremen. Frank CLAEYSSEN, managing director of CTEC, will be the chairman of the sessions dedicated to Aerospace.
 
As joint event to the conference, CEDRAT TECHNOLOGIES will perform two 1-day training sessions on June 26th, 2013: Piezo Actuators / Introductory Course and Magnetic and Linear Actuators / Introductory Course. To know more about these courses please download the programme.
 
Should you be interested in attending one session feel free to contact our training department at training.ct@cedrat-tec.com or by phone +33 (4) 56 58 04 14 (asking for Ms Hugi.Sandrine). 
 
The following abstracts have been submitted for approval:

Moving Iron Controllable actuators : Performances in close loop control
 
This paper presents special features of MICA Moving Iron Controllable Actuators, especially their controllability in open control loop. These actuators are designed in order to ensure high controllability and give improved performances results under control loop operations for specific applications.
A first version is 800N Actuator with 10mm stroke compact enough to be integrated into a milling device in order to damp the vibrations during milling operation in the range of 10 to 100 Hz. It ensures an increase of the milling quality and allows increasing the speed of the operation, which results in a significant increase of productivity.
The second presented application is a XY stage with driving force of 4N in both perpendicular directions on 2mm stroke with a bandwidth 28Hz. For the purpose the MICA actuator has been miniaturised and tuned so that to be compatible with two directions of motion. The targeted application is optical stabilisation in cameras.
 
 
MICA ACTUATOR ON TEST
Compact, Lightweight, and Efficient Piezo-Actuation Chain for Aeronautical Applications  
  
Many past and on-going studies are focusing on the use of piezo-actuators for aeronautical applications. One of the most trendy topic is the use of such devices for active flow control in aircrafts, in order to reduce fuel consumption and noise. The number of those researches underlines the growing interest of this technology for the aeronautical field. However, the implementation of such systems in aircrafts suffers a lack of maturity with respect to the aeronautical constraints, which are high efficiency, compactness, and lightweight.
In general, the actuators are composed of ceramics integrated in a metallic shell, which makes them heavy. For driving the actuators, the power amplifiers employed are usually linear amplifiers, which have a poor efficiency, leading to bulky designs due to large heatsinks. This paper presents recent developments that have been made to cope with those issues in order to obtain a piezo-actuation chain suitable for aeronautical applications. 
 
 
APA® WITH COMPOSITE SHELL
An improved accurate Beam Steering piezoelectric Mechanism for ATlid instrument  
 
A new tip tilt mechanism based on low voltage piezoelectric actuators has been designed by Cedrat Technologies to answer the high level of stability for Earthcare satellite. The Beam Steering Assembly aims at deviating a pulsed high energy UV laser beam to compensate the pointing misalignment between the emission and reception paths of ATLID with a very high stability and high resolution.
Cedrat Technologies was sub-contracted by SODERN, an EADS filial, to design, manufacture and test the performances of Beam Steering Mechanism flights models.
This paper points out the main mechanism design issues including high performances, mechanical and thermal stability; low power consumption; high integration level; high reliability and safety; cleanliness requirements and examines how these issues have been approached by Cedrat Technologies and Sodern.
 
 BSM OVERVIEW INCLUDING PIEZO TECHNOLOGY FROM CTEC
 
A bistable piezoelectric harvester for wideband mechanical frequency excitation 
 
The developments of autonomous systems as for the self health monitoring, embedded systems are increasingly used in industrial applications. The paper focuses on the mechanical structure of the harvesting systems. A structure based on bistable configuration is presented. Usually, bistable systems are based on magnetic interaction or buckled beams. The proposed solution is a buckled spring-mass (BSM) harvesting solution using amplified piezoelectric actuators (APA®). The description of the architecture and the concept are presented in the first part of this document. In the second part, the presentation of the BSM first prototype based on standard product (APA120S®) is given and described. The second prototype based on APA50µXS® has been designed and modelled. The chirp and band-limited noise excitations are used to evaluate the proposed harvester’s performances. 
 
 
BISTABLE PIEZO HARVESTER
Cryogenic piezo characterisation and integration in Fine Steering Tip/Tilt Mechanism  
 
High precision cryogenic applications are demanding domains that require precise knowledge of component performance. In the case of active components such as piezoelectric actuators, such knowledge includes stroke, force and Coefficient of Thermal Expansion (CTE). These parameters are difficult to define with precision because of the combination of small displacements and low temperature sensors compatibilities. A high stability and low sensibility test bench is required to obtain such results.
This paper details a test bench design and the results obtained with CNES on a two piezo ceramics stacks, from 2 distinct suppliers. Integration into dedicated cryo actuators is also proposed as well as the associated cryo performances. The use of such cryo compatible actuators is detailed in a fine steering tip-tilt mechanism designed to reach very high resolution and stability for the ESA EChO space mission.
 
 
FINE STEERING TIP/TILT MECHANISM OVERVIEW
Long stroke/High resolution tip tilt mechanism  
 
Multi degree of freedom (dof) mechanisms are widely required into micro or macro manipulation fields as well as in optronics functions. Commonly available mechanisms may be divided into two main categories. The first is industrial robots (serial or parallel). These offer large range of motion, in rotation and translation. Their resolution is usually limited in the sub-millimeter range. The second category achieves very high resolution motion (sub-nanometer) but is limited to a few decades of microns. A way to combine both long stroke and resolution is to use piezo motors into multi dof mechanisms. The aim of this paper is to present a combination of both advantages into a low volume tripod actuator. The Tripod Actuator by Ctec (TrAC) is a 3 dof mechanism offering +/-30° rotation around X and Y axis and a 8mm Z translation stroke into a low volume of Ø50x50mm.
 

TIP TILT MECHANISM
 
A new Rotating Voice Coil Motor for Meteosat Third Generation satellites  
 
For Meteosat Third Generation (MTG), the future European Operational Geostationary Meteorological Satellites system, Cedrat Technologies has developed dedicated motors to motorize the Scan Assembly mechanism (SCA) made by SENER. Such motors are needed to actuate the SCA on the north/south and east/west axes. The requested pointing precision of the SCA induce very specific characteristics for the motorisation. The motor key needed characteristics are: to be free from any cogging, to have a very constant torque on the all stroke, to have a very low hysteresis and to have redundant coils. To meet these stringent requirements, the choice was made to develop a specific Rotating Voice Coil Motor.
 

SCAN MECHANISM MOTOR 
ENGINEERING MODEL
 
> TRAINING SESSIONS SCHEDULED IN 2014     
 
CEDRAT TECHNOLOGIES CEDRAT TECHNOLOGIES provides comprehensive training courses dedicated to engineers and technicians who wish to discover, improve or recover their knowledge in mechatronic products, systems and technologies. 

Keep in mind the following sessions:
Magnetism Initiation - June 17, November 13
Magnetism for Mechatronics  - June 2 to 4, November 25 to 25
Magnetic & linear actuators Introductory Course - June 26 (Bremen/Conf), November 18
Piezo actuator Introductory Course - June 12, June 26 (Bremen/Conf) 

Download our new 2014 Training Catalogue!
 
Should you be interested in attending one session feel free to contact our training department at training.ct@cedrat-tec.com or by phone +33 (4) 56 58 04 14 (asking for Ms Hugi.Sandrine). 
   

> FORTHCOMING EXHIBITIONS
 
In 2014 CEDRAT TECHNOLOGIES will participate to the following events:
 
- Photonics West (Usa) / booth # 6066 - North Hall D
 
CEDRAT TECHNOLOGIES - 59 Chemin du Vieux Chêne - 38240 Meylan FRANCE
www.cedrat-technologies.com