Attitude displacement measurement apparatus
First Claim
1. Attitude displacement measurement apparatus comprising:
- a base means;
primary bearing means retained by said base means;
auxiliary bearing means mounted for rotation on said primary bearing means on a given axis with respect to said base means;
a first rotor means mounted for rotation on said auxiliary bearing means on said given axis;
a second rotor means mounted for rotation on said auxiliary bearing means on said given axis;
a first drive means coupled to said first rotor means and operable to produce rotation thereof on said auxiliary bearing means in one sense on said given axis;
a second drive means coupled to said second rotor means and operable to produce rotation thereof on said auxiliary bearing means on said given axis in a sense opposite to said one sense; and
measurement means for measuring the magnitude of the difference between the relative rotational speeds of said first and second rotor means with respect to said base means.
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Accused Products
Abstract
An attitude displacement measurement apparatus including a base, primary bearing means retained by the base, auxiliary bearing means mounted for rotation on the primary bearing means on a given axis with respect to the base, a first rotor mounted for rotation on the auxiliary bearing means on the given axis, a second rotor mounted for rotation on the auxiliary bearing means on the given axis, a first drive mechanism coupled to the first rotor and operable to produce rotation thereof on the auxiliary bearing means in one sense on the given axis, and a second drive mechanism coupled to the second rotor and operable to produce rotation thereof on said auxiliary bearing means on the given axis in a sense opposite to the one sense. Also included are a first sensor for sensing the rotational speed of the first rotor with respect to the base, a second sensor for sensing the rotational speed of the second rotor with respect to the base, and a comparator for determining the difference between the rotational speeds sensed by the first and second sensors.
14 Citations
21 Claims
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1. Attitude displacement measurement apparatus comprising:
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a base means; primary bearing means retained by said base means; auxiliary bearing means mounted for rotation on said primary bearing means on a given axis with respect to said base means; a first rotor means mounted for rotation on said auxiliary bearing means on said given axis; a second rotor means mounted for rotation on said auxiliary bearing means on said given axis; a first drive means coupled to said first rotor means and operable to produce rotation thereof on said auxiliary bearing means in one sense on said given axis; a second drive means coupled to said second rotor means and operable to produce rotation thereof on said auxiliary bearing means on said given axis in a sense opposite to said one sense; and measurement means for measuring the magnitude of the difference between the relative rotational speeds of said first and second rotor means with respect to said base means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification