Piezoelectric linear motor CEDRAT TECHNOLOGIES
SPA

Stepping Piezoelectric Actuators (SPA) are new long-stroke linear piezoelectric motors for micro/nano positioning applications benefiting of the APA heritage. They operate by accumulation of small steps.
Between each step the actuator is locked in position. When the long stroke is performed, it can be also operated in a deformation mode for a fine adjustment. In this case, the stroke is proportional to the applied voltage, which leads to a nanometer resolution and a high bandwidth. This actuator can be supplied with CEDRAT TECHNOLOGIES standard Linear Amplifiers.

In summary, SPAs offer:
A blocking at rest in any position (locking without power supply),
high stiffness,
A nano positioning resolution all along the stroke
Non magnetic behavior

Stepping Piezoelectric Actuators (SPA) find applications as micro/nano positioning, locking mechanism, valves actuators. They can be used in instrumentation, especially microscopes (AFM, STM), non-magnetic
equipment (MRI), space telescopes. Multi-axis OEM devices can be developed. SPA is a complement to the Amplified Piezoelectric Actuators (APAs) from CEDRAT TECHNOLOGIES.

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