Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...
Patent
1987-04-03
1989-02-28
Noland, Tom
Measuring and testing
Instrument proving or calibrating
Volume of flow, speed of flow, volume rate of flow, or mass...
364559, 36457103, 33356, 33361, G01C 1738
Patent
active
048074624
ABSTRACT:
The method and system described herein calls for the calibration of an electronic compass without using the operator of the vehicle in the process. This eliminates the need for the operator of the vehicle to help to supply information relating to the earth's unknown magnetic field as sensed from the frame of reference of the vehicle in which the electronic compass resides. The method does not need to make use of the unknown magnetic field due to the earth (as sensed from the frame of reference of the vehicle in which the electronic compass resides) in the process of automatically calibrating the compass. This magnetic field, although unknown, is utilized by viewing the position of the vehicle with respect to the earth's field, thereby eliminating the effect on the compass computation of the earth's magnetic field as sensed in the vehicle.
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Article Entitled: "A magnetic Heading Reference for the Electro Fluidic Auto Pilot"; part I; by Howell D. Garner from Sport Aviation; Nov. 1981.
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Calcaterra Mark P.
Chrysler Motors Corporation
Noland Tom
LandOfFree
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