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Improvement of MSPA: Module of Stepping Piezo Actuator

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By Cedrat Technologies S.A on

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Modular Stepping Piezo Actuators (MSPA) use the stick-slip principle to combine high resolution positioning (<µm) with long stroke (>cm). These motors provide unlimited motion in both rotation and translation. Fine mode allows precise positioning (<10nm). Since it is a module, it easily fits any existing devices requiring up to 25N of driving force with a speed up to 50mm/s. This motor module benefits the use of space qualified Amplified Piezo Actuators (APA®). It is then deemed a good candidate for severe environments such as vacuum, cryo, vibrations, nonmagnetic etc… This paper presents three technical challenges encountered for the development of MSPA product. The first one is the issue of noise resulting from stick-slip actuation below ultrasonic frequencies. The second is the miniaturization at low voltage: One is macro size (sugar cube) working at 45V is characterized, the other is micro size (grain of rice) powered at low voltage below 60V. The third challenge is the successful and reliable integration of the module within new customer applications and new Cedrat Technologies’ products.

Improvement_of__MSPA_module_of_stepping_piezo_actuator

Cedrat Technologies S.A

CEDRAT TECHNOLOGIES offers off the shelf mechatronics products including piezoelectric and magnetic actuators, motors, mechanisms, transducers and sensors with corresponding drivers and controllers. These mechatronics products are used for scientific and industrial applications requiring features such as: micro & nano positioning, generation of vibrations, micro-scanning, fast & precise motion control, active control of vibration, energy harvesting…

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CEDRAT TECHNOLOGIES offers off the shelf mechatronics products including piezoelectric and magnetic actuators, motors, mechanisms, transducers and sensors with corresponding drivers and controllers. These mechatronics products are used for scientific and industrial applications requiring features such as: micro & nano positioning, generation of vibrations, micro-scanning, fast & precise motion control, active control of vibration, energy harvesting…

CEDRAT TECHNOLOGIES is recognised as a highly innovative company and has received several awards. The products, projects and training courses offered by the company focus on:
•Smart Actuators: Actuators & motors based on piezoelectric ceramics, electroactive polymers, ultrasonic effects, magnetostrictive alloys, magnetorheological fluids (MRF) & magnetic effects (moving coils, moving iron …) ; Applications : micro nano positioning, damping, vibration generation, acoustic transducers, micro actuators…

•Smart Sensors: Magnetic, magnetoresistive, magnetostrictive, piezoelectric sensors, transformers or generators; Force, Torque, Position, Speed, Acceleration sensors, including contactless sensors & resonant sensors.

•Mechatronic systems: Multi-degree-of-freedom mechanisms (XY stages, tilts); motion control; Active damping of Vibrations; Vibration (Ultrasonic or sonic) assistance to process; Proportional valves; Fast injectors.

•Detection systems: Health monitoring; NDT using magnetic or acoustic effects; Remote detection systems for position, force, torque remote measurements.

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