Method of determining the amount of travel of a rotating...

Details Method of determining the amount of travel of a rotating... Method of determining the amount of travel of a rotating...

2011-05-10

2011-05-10

Patidar, Jay M (Department: 2858)

Electricity: measuring and testing

Magnetic

Displacement

Reexamination Certificate

active

07940041

ABSTRACT:
A method of determining the amount of travel of a rotating component that includes a rotor shaft includes providing a self-contained magnetically-powered encoder. The encoder includes an encoder rotor that extends outward from a sealed housing such that a clearance gap is defined between the rotor and housing. The method also includes rotatably coupling the encoder to the rotor shaft. The method further includes measuring a first position of the encoder rotor and determining a first rotational position measurement of the rotor shaft based on the encoder rotor. The method also includes rotating the rotor shaft to a second rotational position and determining a direction of rotation and a second rotational position measurement of the rotor shaft using the encoder. The method further includes determining a total rotational distance traveled by the rotor shaft between the first rotational position and the second rotational position.

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