PI's 4-channel dynamic cost-effective digital piezo controller

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

Low noise 20-bit DAC & ADC converters provide high resolution and stability. Four integrated piezo power amplifiers with an output range of -30 to +130V 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 linearisation is based on 4th order polynomials for extreme linearity and absolute positioning accuracy. An optional Dynamic Digital Linearization (DDL) firmware eliminates phase lag and dynamic non-linearities 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, micro-manipulation, including cleanroom applications.

Features:

• Digital servo for advanced control algorithms
• 25kHz control bandwidth
• For capacitive and piezo-restive strain gauge feedback sensors
• High-resolution analogue control inputs and outputs
• Interfaces: Ethernet, USB, and RS-232
• Digital inputs and outputs
• DSP 32/64-bit floating point, 375MHz
• 20-bit DAC and ADC resolution
• ID chip compatible for interchangeability of controller and mechanics
• 4th order polynomial linearisation for mechanics & electronics

Please follow the link for specifications, datasheet and more information about the E-727 digital piezo controller.