Lever-amplified actuators provide longer travel
A
Lambda Photometrics product story
Edited by the Engineeringtalk editorial team
May 22, 2006
The new Physik Instrumente PiezoMove lever-amplified range of actuators is available from Lambda Photometrics.
The new Physik Instrumente PiezoMove lever-amplified range of actuators is available from Lambda Photometrics.
Lever-amplified piezo actuators provide significantly longer travel ranges than direct drive actuators.
What sets the PiezoMove products apart are the internal flexure guides which make additional bearings or guidance mechanisms obsolete when integrating them into a nanopositioning system.
Three versions are available providing up to 480um of travel.
Piezo actuators can move in subnanometre increments, however, open-loop devices do not provide linearity or repeatability.
PiezoMove actuators are available with integrated absolute measuring position sensor permitting closed-loop operation with 99.8% linearity and nanometre repeatability.
The stiff design leads to high resonant frequencies of 750Hz allowing settling times of only a few milliseconds, ideal for highly dynamic applications.
Reliability is assured by the use of award winning PICMA actuators in a sophisticated single module flexure guidance system.
PICMA actuators feature ceramic encapsulation thus offering better performance and reliability than conventional actuators.
The wire-cut flexures are FEA modelled making them extremely precise and not subject to wear, leading to maintenance free operation.
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