Shaft feedback sensor error detection

Details Shaft feedback sensor error detection Shaft feedback sensor error detection

2007-08-28

2007-08-28

Barlow, John (Department: 2863)

Data processing: measuring, calibrating, or testing

Calibration or correction system

Sensor or transducer

Reexamination Certificate

active

11038777

ABSTRACT:
Methods and apparatus for detecting a sensor angle error in a system in which a measured quantity is determined on the basis of a phase of a signal. A signal derived from the measurement of multiple sensors is ascribed to a vector in a two-dimensional space, and a norm is calculated characterizing that vector. A value is calculated characterizing variation of that norm over a specified period of time and that value is compared with a threshold in order to identify a sensor fault.

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