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New Paradigm in control of machining system’s dynamics
19 June 2023
Complex mechanical components machined with zero defects are an essential condition in precision manufacturing and it becomes a new challenge for the next generation intelligent machining systems. Improved precision and accuracy of machines, processes and components offers substantial benefits to a wide range of applications from ultra-precision to mass customization with higher quality and better reliability. Within this context, this paper identifies critical problems that limit the performance of the machining system and address them by advancing novel solutions.
Micro stage XY25XS
19 June 2023
The XY25XS stage is an original micro positioning mechanism developed, built and marketed by CEDRAT TECHNOLOGIES. This mechanism relieds on the Amplified Piezo Actuators (APA) technology patented by CTEC
Micromotor based on film permanent magnets
19 June 2023
A design of a single phase step micro motor is presented. The rotor has been optimised to induce the greatest magnetic energy using film permanent magnets. A special study has been performed to select the most advantageous magnetisation direction and the structure has been chosen taking into account micro technologies characteristics and the present know-how available for realisation of prototypes. A scale 2 prototype has already been realised. Its special air gap tuning for film magnet test is presented, as well as first torque measurements.
Miniature piezo mechanisms for optical and space applications
19 June 2023
Piezoelectric actuators find their first applications in active space optics. The purpose of this paper is to describe the state of the art and some applications. Piezo actuators display attractive features for space applications, such as precise positioning, unlubricated, non magnetic and compact features, and low power consumption. However, piezo mechanisms cannot be considered separately from their driving and control electronic.
Modular Test bed for Performance Assessment of Piezoelectric Stick-Slip Actuators
19 June 2023
Stepping piezoelectric actuators based on the stick-slip effect inherently make use of a friction contact between stator and rotor. This contact defines not only the actuator’s performance but also is prone to wear and tear. For broad use, the actuator has to be able to perform around 1 million strokes. To assess the actuator’s performance in terms of force, speed, mechanical output, electrical input, and long-term stability under different load- and environmental conditions, as well as different friction partners, a dedicated test-bed for a LSPA30µXS motor by Cedrat Technologies has been set up.
Moving Iron Controllable Actuator : Performances in close loop control
19 June 2023
Moving iron controllable actuator (MICA) is a highly controllable Actuator. It has a robust mobile part with elastic guiding for a long life. The article presents the performances of the MICA when it is driven in a closed loop and shows impressive results achieved by IDEKO on a SOLARUCE milling machine.
