A Radiation tolerant acquisition system and signal processing for LVDT sensors.

This thesis work aims at designing a new electronic board which wants to be a generic acquisition card with numerical processor capabilities for reading LVDT or other position sensors. The board is based on commercial parts and is designed to be radiation tolerant . That means that the electronics works properly up a given limit of radiation levels. A flash based FPGA, known to be latch-up free, is selected to perform the Sine Fit algorithm in fixed point precision to retrieve the sensor position. The Sine Fit algorithm is deeply analyzed and 3 different implementations in fixed point representation are investigated in order to achieve a numerical precision that can assure the target requirements. The third algorithm makes use of the CORDIC functions. The tests are done on a proof demonstrator board with ADC and FPGA.