Device for determining a motion parameter with automatic scaling

Details Device for determining a motion parameter with automatic scaling Device for determining a motion parameter with automatic scaling

1998-03-11

1999-11-23

Chapman, John E.

Measuring and testing

Speed, velocity, or acceleration

Temperature compensator

7350413, G01P 904

Patent

active

059879840

ABSTRACT:
A device which determines a motion parameter with a sensor having a plurality of sensor elements coupled to one another, in which the motion parameter corresponds to a rotational speed. The device includes a starter loop for putting the sensor in a state of excitation via a starter signal via at least one of the sensor elements and for generating a sensor quantity, with the sensor quantity being a measure of a response of the sensor to the starter signal, and the starter signal having a substantially constant amplitude. A detector loop coupled to at least one of the sensor elements is also provided in the device for providing a measurement signal correlating with the motion parameter. The device further includes an analysis unit for providing an output voltage representing the motion parameter as a function of the measurement signal, a correction unit for keeping a substantially constant correlation between the output voltage and the motion parameter and for generating a correction signal as a function of the sensor quantity, and a multiplier providing the correction signal to the analysis unit.

REFERENCES:
patent: 5540094 (1996-07-01), Varnham et al.
patent: 5806364 (1998-09-01), Kato et al.

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