Auburn, Massachusetts – PI’s digital controller/driver offers higher bandwidth and resolution, along with 3x the driver power of its predecessor. The E-754 is designed for closed-loop piezo mechanisms with capacitive position feedback sensors.
The E-754 controller provides a servo with 50kHz update rate and 22-bit resolution. In addition to PID control, two programmable notch filters are integrated for higher bandwidth by suppression of mechanical system resonances. Digital linearization is based on 4th order polynomials to suppress linearity deviation to less than 0.01%. The Dynamic Digital Linearization (DDL) firmware option eliminates phase lag and dynamic non-linearities at high operating frequencies, such as used in scanning applications. The driver provides 500mA peak current and -30V to 135V output voltage swing.
In addition to Ethernet (TCP/IP), SPI, USB, RS-232 communication interfaces, 4 I/O trigger lines and a high-resolution, 20-bit DAC analog command interface is also installed. A built-in high-speed data recorder allows capture of transients and optimization of servo parameters.
ID chip compatibility allows for quick start-up and interchangeability of controller and piezo mechanisms without recalibration. The controller also comes with extensive software support for LabVIEW and shared libraries for Windows and Linux.
Applications for the dynamic controller include nanopositioning, nano-automation, semiconductor technology, photonics, bio-nano-technology, metrology, microscopy, and micro-manipulation including cleanroom applications.
Source PI