Digital Motion Controller

The E-709 singlechannel piezo controller from Physik Instrumente uses digital technology for lower-cost systems in the accuracy class from one to 10 nanometers. Its D/A conversion is 16 bit, the 32 bit processor with 150 MHz clock–pulse rate allows a servo rate of 10 kHz. The amplifier provides 5 W continuous power, for the dynamic operation of conventional nanopositioning systems. The digital controller operates with linearization algorithms which improve the accuracy of the piezo system by a factor of 10 from around 0.2% to 0.02%. The E-709 can be supplied with commands via USB and RS-232 interfaces and uses software to set the motion and control parameters and program the digital I/Os.