Position determining

Details Position determining Position determining

2008-07-15

2008-07-15

West, Jeffrey R. (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system

Orientation or position

C702S094000, C702S112000, C702S113000, C702S145000, C073S865900, C324S076130, C324S207120, C341S008000, C341S115000

Reexamination Certificate

active

07401001

ABSTRACT:
A position determining system for determining a position of a rotor of a rotating motor has sensors that are coupled to the rotor. The sensors generate, in response to a rotation of the rotor, a quadrature signal that has sine and cosine components. The position determining system calculates a sum (A2) of a squared value of the sine component (A2sin2x) and a squared value of the cosine component (A2cos2x). An amplitude correction factor (A) is calculated as the squared root of the sum (A2). An amplitude corrected sine component (sin(x)) is obtained by dividing the sine component (Asin(x)) by the amplitude correction factor (A). An amplitude corrected cosine component (cos(x)) is obtained by dividing the cosine component (Acos(x)) by the amplitude correction factor (A).

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By D.E. Yount, E.W. Gillary and D.C. Hoffman; Entitled: A Microscopic Investigation of Bubble Formation Nuclei; Department of Physics and Astronomy, and Department of Physiology, University of Hawaii, Honolulu Hawaii. vol. 76, No. 5, Nov. 1984. p. 1511; 1519 and p. 2-9.

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