ANGLE ENCODER AND A METHOD OF MEASURING AN ANGLE USING SAME

摘要

An angle encoder is disclosed. The angle encoder has first and second components rotatable with respect to each other, and an encoder pattern comprising codewords for indicating the angle between the first and second components. The encoder pattern comprises a set of base encoder channels coded with a conventional Gray code, and a set of Booster channels for improving the resolution of angle measurement.

主权项

1. An angle encoder comprising:
a first component; a second component rotatable with respect to the first component and juxtaposed thereto; an encoder pattern storing codewords indicative of possible angles between the first and second components; and at least a first reader, in response to a current angle between the first and second components, reading, from said encoder pattern, a codeword indicative of the current angle between the first and second components; wherein said encoder pattern comprises one or more channels; and wherein the one or more channels are circumferentially extending linear strips.