Product category:
Stepper and Servo Drives, Motors, Controls
News Release from: Lambda Photometrics | Subject: E-710.SCN controllers
Edited by the Engineeringtalk Editorial
Team on 25 March 2003
Nanoscanning controllers boost linearity
A new generation of digital piezo nanopositioning/nanoscanning controllers is ideal for applications such as scanning microscopy, surface profiling, nanotechnology and cell tracking.
Physik Instrumente has developed a new generation of digital piezo nanopositioning/nanoscanning controllers for applications such as scanning microscopy, metrology, surface profiling, material science, nanotechnology and cell tracking The E-710.SCN controllers are available in three-, four- and six-channel versions and address the ever-growing linearity and speed requirements of today's nanotechnology applications
This article was originally published on Engineeringtalk on 25 Feb 2000 at 8.00am (UK)
Related stories
Infrared Imaging : The best gets better
Viewing infrared wavelengths between 0.4-1.5microns, the converted image produced by the new 7215 is now brighter and offers edge to edge sharpness.
The need for ever increasing scanning speeds has led to the development of these new digital controllers.
Conventional PID (proportional integral derivative) piezo servo motion controllers exhibit phase lag and tracking errors due to the nonlinear nature of PZT material and the inherent limitations of the PID controller concept.
With a standard PID piezo controller, tracking errors can be as large as 20% (in closed-loop operation) even at relatively low scanning rates of 5Hz.
This limits both the speed and precision of data acquisition, for example in scanning microscopy applications.
The new PI E-710.SCN controllers use a different, smart digital controller model, reducing nonlinearity and phase lag to indiscernible levels, even with high-frequency dynamic actuation under load.
The effect is an improvement in linearity (usable bandwidth) of two orders of magnitude resulting in significantly increased throughput. Request a free brochure from Lambda Photometrics ...
• Lambda Photometrics: contact details and other news
• Email this article to a colleague
• Register for the free Engineeringtalk email newsletter
• Engineeringtalk Home Page
Search the Pro-Talk network of sites
