Friday, May 25, 2018
Publication Date: 08/1/2008
Archive >  August 2008 Issue >  New Products > 

PI Intros Nanopositioning Digital Piezo Stage Controller
Nanopositioning stage and controller.
Auburn, MA — PI's new E-712 digital piezo stage controller has been designed for the most demanding accuracy and dynamic-performance requirements of multi-axis piezo nanopositioning systems. Its highly modular design allows flexible configuration, easy upgradeability and adaptation to changing requirements in any scanning or positioning application for nanopositioning systems with up to 6 axes.

The new controller can accommodate up to 50kHz sensor update rate; it has highly stable 20-bit D/A converters, and 600MHz processor; an Ethernet interface provides for remote control through the Internet; real-time operating system provides better multi-axis trajectory control.

The controller uses digital linearization algorithms based on higher-order polynomials to improve the positioning accuracy to 99.999 percent of the travel range, and the dynamic digital linearization eliminates tracking errors in highly dynamic scanning applications.

Due to its high-performance processor and real time operating system, the controller can precisely control the trajectory of up to 6 axes even during high-velocity motion on a millisecond time scale. Proprietary linearization algorithms deal with the nonlinear nature of PZT actuator material and reduce motion errors to 0.001 percent of the travel range. The high position sensor sampling rate of 50kHz, provides plenty of margin even for ultra-fast piezo stages with sub-millisecond response times. In addition, the system benefits from 20 Bit DA-converters and ultra-low noise voltage amplifiers.

With USB, Ethernet, RS-232 and optional high-bandwidth analog interfaces, the controller can adapt to any environment. Ethernet allows remote control and complete system setup, configuration and parameter readout through the Internet. All parameters can be checked and reset via software. User-interface software, LabView drivers and DLLs are provided and the company's general command set (GCS) lets users swap the controller for any other PI unit in the future without rewriting their code.

Contact: Physik Instrumente L.P., 16 Albert St., Auburn, MA 01501 508-832-3456 fax: 508-832-0506 E-mail: Web:

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