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AssigneesGM Global Technology Operations LLC, Oceaneering International, Inc.
InventorsDonald R. Davis, Frank Noble Permenter
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A system includes a rotary device, a rotary absolute position (RAP) sensor generating encoded pairs of voltage signals describing positional data of the rotary device, a host machine, and an algorithm. The algorithm calculates calibration parameters usable to determine an absolute position of the rotary device using the encoded pairs, and is adapted for linearly-mapping an ellipse defined by the encoded pairs to thereby calculate the calibration parameters. A method of calibrating the RAP sensor includes measuring the rotary position as encoded pairs of voltage signals, linearly-mapping an ellipse defined by the encoded pairs to thereby calculate the calibration parameters, and calculating an absolute position of the rotary device using the calibration parameters. The calibration parameters include a positive definite matrix (A) and a center point (q) of the ellipse. The voltage signals may include an encoded sine and cosine of a rotary angle of the rotary device.
A system comprising:
A calibration module adapted for calibrating a rotary absolute position (RAP) sensor for a system having a rotary device, the RAP sensor being adapted for measuring a rotary position of the rotary device, and for outputting encoded pairs of voltage signals describing the rotary position, the calibration module comprising:
A method of calibrating a rotary absolute position (RAP) sensor adapted for measuring a rotary position of a rotary device, the method comprising:
Dependencies are inferred from the claim text.