Precision harmonic rejecting demodulator with digital phase alignment

摘要

A low-cost, two-axis rate and acceleration sensor utilizing piezoelectric generator elements affixed to a rotating structure and generating a periodic signal having an amplitude representing the rates and accelerations. A demodulator dividing the period of the signal into a plurality of segments and regenerating selected ones of the signal segments in accordance with a predetermined pattern stored in a fixed store, the regenerated signal segments being filtered to produce rate and acceleration analog voltages.