This category covers:
Equipment that aids the control of industrial processes subject to continuous changes in position. Includes drives, motors, gears, chains and belts, bearings, actuators, brakes and clutches.
Cedrat Technologies will be hosting two introductory courses — one for piezo actuators, and the other for magnetic and linear actuators.
Latest Product Downloads
The COBO20 from Linak is specially developed for use together with the Jumbo battery pack and CU20 and makes increased battery power available.
In this study from Cedrat Technologies, a characterisation of hysteresis in a piezoceramic stack actuator similar to that employed in an actively controlled flap (ACF) system is performed to assess the effects of hysteresis on system performance. The effect of unmodelled actuation hysteresis may significantly reduce vibration and noise reduction capabilities. A hysteresis model based on the classical Preisach model has been developed from experimental data. The model displays good agreement ...
Most of present electric contactors use magnetic actuators of reluctant type (so-called electromagnets) that are supplied with a simple voltage source. The use of a reluctant actuator in this condition leads to a considerable force increase when the magnetic circuit is closing, which creates damaging rebounds of the electrical contacts. To have a better control of the closing dynamics, we develop an electric drive method to reduce impact speed and to improve the closing dynamics. In ...
fter a short characterisation of design particularities of magnetic MEMS devices, this article from Cedrat Technologies explains in detail different steps and ways of using a FEM magnetic modelling tool such as Flux to lead the project up to final achievements. Through the description of numerous development work tasks, the interest of using Flux magnetic computation tool is exhibited. The article ends with an evaluation of limits and strength of such tool for the design of magnetic MEMS.
Aerotech’s engineering reference guide serves as a valuable resource for all Aerotech motion and positioning control components and systems. Section six focuses on loading versus lifetime.
Among the three different piezomotors categories — resonant, quasistatic or stepping and inertial — as far as accuracy is concerned a quasistatic behaviour is far more preferable, because of the infinite resolution of the piezo element driven in static. However, this benefit is then obtained at the expense of the speed, which is reduced again typically less than 1mm/s. This paper from Cedrat Technologies introduces a new concept of rotating stepping piezomotor developed in the frame ...
This white paper from Cedrat Technologies deals with design, prototyping and evaluation of a moving iron linear actuator (MICA). First, the actuator concept originality is presented. Then, the importance of dynamic and controllability aspects is discussed for actuators. Achievement of such characteristics faces several issues that are explained. Then, the principle of MICA is presented and main characteristics of the newly built prototype of MICA V1 are given.
This paper from Cedrat Technologies presents the development of a rotation-free linear actuator: the use of a highly dynamic actuator in the rotating frame, such as piezo actuator, required dedicated devices to transmit the electrical power from the static frame to the rotating one. Slip rings and rotating transformers are able to provide this function. However, the integration of such components required invasive operations. The purpose of this study is to propose a versatile mechanism ...
This white paper from Cedrat Technologies describes the study of a tilt mechanism reaching 300µrad of stroke in less than 3ms while cancelling at the same time the reaction forces resulting from this fast motion.