High definition zero mark for optical encoder

Details High definition zero mark for optical encoder High definition zero mark for optical encoder

G - Physics

08

C

340/135

G08C 21/00 (2006.01) G01D 5/36 (2006.01)

Patent

CA 2038657

Abstract of the Disclosure An incremental position encoder makes use of a first and second track of non-identical non-complementary aperiodic patterns to generate a zero mark. A mask with the identical pattern to the first track and a mask with the complementary pattern to the second track correlate with the patterns on the first and second track when the encoder is in zero position. Light transmitted by the masks produce electrical signals that are compared to create the zero mark. An iterative approach improves the discrimination of an initially selected track pattern for its particular application based on developed criteria for good noise immunity and resolution. The size of the reference track with respect to the increment track and the placement of each mask on the stator and rotor are optimized. A system for improving noise immunity by biasing the signal from each photodetector is also shown.

Affiliated with

Also associated with

Rating

High definition zero mark for optical encoder does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High definition zero mark for optical encoder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High definition zero mark for optical encoder will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1573132