PI’s new motion controller enables picometer positioning

PI’s E-755 controller with an N-214 nanopositioner. (Photo: PI)

June 6, 2007 — Physik Instrumente (PI) L.P., manufacturer of nanopositioning and piezo-based precision motion-control equipment for bionanotechnology, photonics, and semiconductor applications, introduces a new ultra-high-resolution motion controller, the Nexline E-755. The controller drives the company’s Nexline high-force, precision linear motor actuators, which are designed to bridge the gap between micro- and nanopositioning technology.

The E-755 features:
+ Special control algorithms for Nexline PiezoWalk nano drives
+ 32-bit digital filters, 24-bit DAC resolution, integrated piezo amplifiers
+ Fully programmable low-pass and notch filters
+ Non-volatile user settings and last-position data

The controller promises linearity within 0.001% over the full travel range in closed-loop operation. It can run in closed- or open-loop mode, and it provides an input for the nanometer-precision incremental linear encoders that are integrated in standard Nexline actuators. Low-noise, 24 bit D/A converters enable the E-755 controller to provide picometer-level resolution in the highly dynamic short-range / dithering mode that the actuators support.

The E-755 comes with an extensive software package including drivers for National Instruments’ LabVIEW for automation of nanopositioning tasks.


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