Publications
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High power density Piezo motors for critical environments
8 September 2022
Piezoelectric motors offer many advantages for applications in numerous industrial sectors. The requirements for which these solutions are developed are focused on their main advantages such as non-magnetic and radiation compatibility, high force/volume ratio, good unpowered stall force and low power consumption. Such applications are typically concerned by exotic working conditions on which the piezoelectric motors still need to improve regarding the technological readiness level.
High power force oscillator and drive electronics
19 June 2023
This paper presents the development of one amount the largest piezo actuator ever designed based on low voltage PZT. This actuator is able to provide more than 20kN of force in dynamic operation (60kN in static operation). The purpose of low frequency vibration generation is to improve the quality of parts production in the field of manufacturing and machining process.
DTT35XS new compact piezo tilt mechanism
9 January 2002
The DTT35XS is a new piezo mechanism coming from CEDRAT TECHNOLOGIES lab in February 2002. It comes from a development for space needs defi ned with the CNES (the French space agency), and for which a first application was found in the frame of “PHARAO”. This mechanism is based on two pairs of APA35XS, Amplifi ed Piezo Actuators displaying 35 µm of stroke each, arranged in cross configuration. The mechanism allows both a defl ection of +/- 2 mrad around the X and Y axis and a vertical displacement of 35 µm in the Z direction.
High power synthetic jet actuator
19 June 2023
High Power Synthetic Jet Actuator (SJA) based on compact piezoelectric actuators, have been developed and tested by
CEDRAT TECHNOLOGIES (CTEC) and ONERA, under French National funding RAPID from DGA. This publication
presents the modelling approach with early breadboarding results, the final design chosen for integration onto an aircraft
airfoil mock-up, the performance test results on the SJA device prior integration, and the final aerodynamic performance
test demonstration achieved at ONERA wind tunnel test facility.
Highly dynamic & high precision self balanced optical mechanism
19 June 2023
Ongoing developments of instruments reveal the need for fast and precise mechanisms [1]. These requirements are all the more significant when large payloads of hundreds grams, such as mirrors, optical plates, corner cubes or antennas are involved in the motion. Indeed, highly dynamic kinematics coupled with large inertia lead to parasitic reaction forces that interfere on the accurate measurement.
Tubular ultrasonic transducer: MUST with axial excitation versus conventional with radial excitation
19 June 2023
This paper presents comparison between two excitation solutions for tubular ultrasonic transducer. The axial excitation is widespread in conventional ultrasonic transducer. The radial excitation is proposed in order to have an uniform acoustic energy all along the tube. This excitation approach is also proposed to allow the modularity by adding several tubes.
