Digital piezo controller for nanopositioning systems, actuators
Physik Instrumente’s (PI) E-727 3- and 4-channel digital piezo controller that integrates existing piezo-based nanopositioning systems and piezo actuators. The E-727 provides three additional high-resolution analog interfaces as well as a broader choice of traditional, high-speed, and real time digital interfaces, such as SPI, Ethernet, USB and RS-232. 20-bit DAC and ADC converters are designed to keep the closed-loop E-727 controller operating with high resolution and ultra-low noise, along with four integrated power amplifiers for multilayer piezo drives with operating voltage of -30 to 130 V. Closed-loop nanopositioning systems are supported with capacitive feedback sensors, piezoresistive sensors, and traditional strain gauges. In addition to PID control, two additional user programmable notch filters are implemented for suppression of mechanical system resonances. The dynamic digital linearization (DDL) feature is designed to eliminate non-linearities at high operating frequencies.
Physik Instrumente (PI)
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