Assembly of linear accelerometers mounted on a rigid body remote from the center of mass measuring three dimensional movements
First Claim
1. An assembly of accelerometers for use in a system for measuring the three dimension movements of a rigid body comprising nine linear accelerometers which are connected to said rigid body in a spacial configuration with reference to an imaginary orthogonal coordinate system whereby at a first position on the X-axis of the coordinate system displaced from the origin a first and second accelerometer are installed, the sensitive direction of the first accelerometer being parallel to the Y-axis of the coordinate system and the sensitive direction of the second accelerometer being parallel to the Z-axis of the coordinate system, at a second position on the Y-axis of the coordinate system displaced from the origin a third and fourth accelerometer are installed, the sensitive direction of the third accelerometer being parallel to the X-axis and the sensitive direction of the fourth accelerometer being parallel to the Z-axis, and at a third position on the Z-axis of the coordinate system displaced from the origin a fifth and sixth accelerometer are installed, the sensitive direction of the fifth accelerometer being parallel to the X-axis and the sensitive direction of the sixth accelerometer being parallel to the Y-axis, wherein a seventh accelerometer is installed at a fourth position midway on a line between the first and second positions, the sensitive axis of the seventh accelerometer coinciding with a line through said fourth position and the origin of the coordinate system, an eighth accelerometer is installed at a fifth position midway on a line between the second and third position, the sensitive axis of the eighth accelerometer coinciding with a line through said fifth position and the origin of the coordinate system and a ninth accelerometer is installed at a sixth position midway on a line between the third and first position, the sensitive axis of the ninth accelerometer coinciding with a line through said sixth position and the origin of the coordinate system.
3 Assignments
0 Petitions
Accused Products
Abstract
The invention provides an assembly of accelerometers for use in a system for measuring the three dimensional movements of a rigid body comprising nine linear accelerometers which are connected to said rigid body in a spacial configuration with reference to an imaginary orthogonal coordinate system. At a first position on the X-axis at a predetermined distance from the origin two accelerometers are installed, the sensitive directions thereof being parallel to the Y-axis and to the Z-axis respectively. At a second position on the Y-axis of the coordinate system at a predetermined distance from the origin two accelerometers are installed, the sensitive directions being parallel to the X-axis and to the Z-axis respectively. At a third position on the Z-axis at a predetermined distance from the origin two accelerometers are installed, the sensitive directions being parallel to the X-axis and to the Y-axis respectively. Three further accelerometers are installed midway on the edges between the first, second and third positions, the sensitive axes of these further accelerometers each coinciding with a line through the origin of the coordinate system.
29 Citations
10 Claims
- 1. An assembly of accelerometers for use in a system for measuring the three dimension movements of a rigid body comprising nine linear accelerometers which are connected to said rigid body in a spacial configuration with reference to an imaginary orthogonal coordinate system whereby at a first position on the X-axis of the coordinate system displaced from the origin a first and second accelerometer are installed, the sensitive direction of the first accelerometer being parallel to the Y-axis of the coordinate system and the sensitive direction of the second accelerometer being parallel to the Z-axis of the coordinate system, at a second position on the Y-axis of the coordinate system displaced from the origin a third and fourth accelerometer are installed, the sensitive direction of the third accelerometer being parallel to the X-axis and the sensitive direction of the fourth accelerometer being parallel to the Z-axis, and at a third position on the Z-axis of the coordinate system displaced from the origin a fifth and sixth accelerometer are installed, the sensitive direction of the fifth accelerometer being parallel to the X-axis and the sensitive direction of the sixth accelerometer being parallel to the Y-axis, wherein a seventh accelerometer is installed at a fourth position midway on a line between the first and second positions, the sensitive axis of the seventh accelerometer coinciding with a line through said fourth position and the origin of the coordinate system, an eighth accelerometer is installed at a fifth position midway on a line between the second and third position, the sensitive axis of the eighth accelerometer coinciding with a line through said fifth position and the origin of the coordinate system and a ninth accelerometer is installed at a sixth position midway on a line between the third and first position, the sensitive axis of the ninth accelerometer coinciding with a line through said sixth position and the origin of the coordinate system.
-
8. An assembly of accelerometers for determining rotational and translational movements of a rigid body in three dimensions with reference to an imaginary orthogonal coordinate system having an origin at a center of inertia of said rigid body, said assembly comprising:
-
a) multiple opposed X-axis accelerometers having directions of sensitivity lying in a mutual X-axis accelerometer plane and passing through an X-axis point displaced along said X-axis to be in a physically more accessible location than is said origin; b) multiple opposed Y-axis accelerometers having directions of sensitivity lying in a mutual Y-axis accelerometer plane perpendicular to said X-axis accelerometer plane and passing through a Y-axis point displaced along said Y-axis to be in a physically more accessible location than is said origin; c) multiple opposed Z-axis accelerometers having directions of sensitivity lying in a mutual Z-axis accelerometer plane perpendicular to said X-axis and Y-axis accelerometer planes and passing through a Z-axis point displaced along said Z-axis to be in a physically more accessible location than is said origin; d) multiple origin-oriented accelerometers each having a direction of sensitivity passing through said origin; wherein one of each direction of sensitivity of said origin-oriented accelerometers passes through an intermediate point between said X-axis point and said Y-axis point, between said Y-axis point and said Z-axis point and between said Z-axis point and said X-axis point. - View Dependent Claims (9, 10)
-
Specification