Four-channel digital piezo controller serves multi-axis applications

Oct. 24, 2016

Auburn, MA. PI (Physik Instrumente) has announced a new, four-channel version of its high-performance E-727 digital piezo controller. The E-727 is designed for multi-axis nanopositioning applications, such as 3D imaging in super-resolution microscopy, laser beam steering, image stabilization in astronomy, and fast alignment applications including fiber alignment and semiconductor CD testing.

In addition to a choice of digital high-speed interfaces, such as SPI, Ethernet, and USB (and traditional RS-232), it also provides three additional high-resolution analog inputs.

Low-noise 20-bit DACs and ADCs provide high resolution and stability. Four integrated piezo power amplifiers with an output range of -30 to +130 V as well as circuitry for capacitive feedback sensors, piezoresistive sensors, and traditional strain gauges are also on board. The digital servo provides PID control with two programmable notch filters for higher bandwidth by suppression of mechanical system resonances. Digital linearization is based on fourth-order polynomials for extreme linearity and absolute positioning accuracy. Optional dynamic digital linearization (DDL) firmware eliminates phase lag and dynamic nonlinearities at high operating frequencies.

A data recorder for high-speed tracing, ID chip compatibility for quick start-up, and exchange of system components without recalibration are also included. The controller comes with extensive software support for LabVIEW and shared libraries for Windows and Linux.

Applications for the new dynamic controller include nanopositioning, nano-automation, semiconductor technology, photonics, bio-nano-technology, metrology, microscopy, and micro-manipulation, including cleanroom applications.

http://www.pi-usa.us/index.php

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