Cyclic position transfer between high resolution optical encoder and FPGA


Requirements for positioning accuracy and speed ripple are quite high in modern servo drives. To overcome these challenges, the whole feedback path should be carefully designed and the right sensors selected.

Position sensors should be able to provide, at the same time, accurate and frequent information updates. Traditional incremental encoders or resolvers are inadequate in terms of speed and resolution/noise respectively.

Additionally, feedback currents should be measured using high accuracy sensors and the corresponding signals should be preserved from any external noise.

We have the necessary expertise for selecting and using opticals encoders with resolution in excess of 20 bits and equipped with recent and fast communication interfaces; we know the best available current sensing technologies and how to design and build a suitable conditioning and routing circuitry.