Piezo Actuators

Piezo Motors and Stages

Piezo ActuatorsOverviewStepping Piezoelectric Actuators (SPA) are new long-stroke linear or rotating piezoelectric motors for micro/nano positioning applications benefiting from proven APA® heritage. They operate by accumulation of small steps. The motion can be...

Piezo Drivers and Controllers

Piezo ActuatorsOverviewTo fulfill various requirements in terms of driving and control conditions for its piezo actuators (static, pulse, dynamic), CEDRAT TECHNOLOGIES has developed 3 different families of standard drivers: CA45: Low cost, compact (1 channel)...

Piezo Actuator Mechanisms

Piezo ActuatorsOverviewMainly based on the APA® concept, CEDRAT TECHNOLOGIES has developed different mechanisms in order to fulfill its customers’ requests for several degrees of freedom kinematics. These mechanisms take advantage of the APA® concept offering a...

Parallel Pre-stressed Actuators (PPA)

Piezo ActuatorsOverviewThe PPA is a preloaded low voltage piezoelectric actuator using a direct-acting multilayer ceramic stack (MLA). Most conventional Direct Piezo Acutators use an MLA preloaded by Belville washers on the end of the stack, enclosed in a rigid case....

Amplified Piezoelectric Actuators (APA®)

Overview

Patented by CEDRAT TECHNOLOGIES, the Amplified piezoelectric actuator, is a mechanical magnified preloaded stack of low voltage piezoelectric ceramics (MLA).

The mechanical amplification is obtained thanks to an external elliptical shell made of stainless steel which magnifies along the short axis the MLA deformation occurring along the main axis. This elliptical frame also protects the MLA against tensile force. It provides the user with mechanical interfaces for easy integration. This prestressing and magnifying flextensionnal frame applies an optimal preloading force to the MLA which ensures a longer life time and better performances than traditional mechanical amplifiers based on lever arm and flexure pivot, when dynamically applied.

The APA® developed by CEDRAT TECHNOLOGIES has force and displacement performance ranges exceeding those of direct or bimorph Piezo actuators.

10 series (uXS, XXS, XS, S, SM, M, MML, ML, L, XL) of APA® are available in order to meet the different needs in terms of stroke, force and dimensions.

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