Non-contact position sensor

Details Non-contact position sensor Non-contact position sensor

2007-05-22

2007-05-22

Noori, Max (Department: 2855)

Measuring and testing

Dynamometers

Responsive to torque

C073S862333

Reexamination Certificate

active

10910418

ABSTRACT:
A non-contact position sensor having improved rotational angle measuring accuracy is provided.A magnet is attached To a rotating shaft. An angle sensor element detects magnetic field changes generated from the magnet due to rotation of the rotating shaft. A signal processor, on the basis of a temperature detected by a temperature sensor, corrects variance between the sensors including the sensor element, the signal processor, and the magnet by correcting an amplitude value and/or an offset value of a signal or variance due to time of the amplitude value. The sensor element1outputs the first and second outputs v1and v2and the signal processor obtains the temperature coefficients of the amplitude values of the output v1and output v2, or the temperature coefficients of the offset values, or the coefficients of variance due to time of the amplitude values, obtains the ratio of the first and second outputs corrected by these coefficients, and calculates the angle using the corrected ratio.

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European Search Report.

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