Transducer for measuring displacement of a vehicle spindle
First Claim
Patent Images
1. A spindle mountable transducer for measuring displacement of a vehicle spindle having an axis of rotation with respect to an orthogonal coordinate system, the transducer comprising:
- a body adapted to be mounted to the vehicle spindle to rotate therewith about the axis of rotation;
a plurality of accelerometers coupled to the body and providing acceleration signals responsive to acceleration of the body; and
a calculation circuit coupled to the plurality of accelerometers and adapted to convert the acceleration signals to displacement signals indicative of displacement of the body in the coordinate system.
3 Assignments
0 Petitions
Accused Products
Abstract
A transducer includes a body mountable to a vehicle spindle and a plurality of accelerometers coupled to the body. The plurality of accelerometers measure acceleration of the body. A calculation circuit coupled to the plurality of accelerometers receives output signals therefrom and converts the measured acceleration to displacement signals indicative of displacement of the body in a coordinate system.
46 Citations
12 Claims
-
1. A spindle mountable transducer for measuring displacement of a vehicle spindle having an axis of rotation with respect to an orthogonal coordinate system, the transducer comprising:
-
a body adapted to be mounted to the vehicle spindle to rotate therewith about the axis of rotation;
a plurality of accelerometers coupled to the body and providing acceleration signals responsive to acceleration of the body; and
a calculation circuit coupled to the plurality of accelerometers and adapted to convert the acceleration signals to displacement signals indicative of displacement of the body in the coordinate system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
a member rotatably coupled to the body wherein the plurality of accelerometers are mounted to the member to remain stationary with respect to relative rotation of the body.
-
-
4. The spindle mountable transducer of claim 1 wherein the calculation circuit performs a double integral operation on the acceleration signals.
-
5. The spindle mountable transducer of claim 1 wherein the plurality of accelerometers are grouped in pairs of accelerometers, each pair comprising a first accelerometer sensing acceleration in a first direction, and a second accelerometer sensing acceleration in a second direction orthogonal to the first direction.
-
6. The spindle mountable transducer of claim 5 wherein the plurality of accelerometers comprises six accelerometers.
-
7. The spindle mountable transducer of claim 5 wherein the plurality of accelerometers comprises eight accelerometers.
-
8. The spindle mountable transducer of claim 1 wherein the plurality of accelerometers provide acceleration signals indicative of six degrees of freedom.
-
9. A method for measuring displacement of a vehicle spindle having an axis of rotation with respect to an orthogonal coordinate system, the method comprising:
-
mounting a body to the vehicle spindle to rotate therewith about the axis of rotation;
measuring acceleration of the body and providing an acceleration signal responsive to the measured acceleration; and
calculating displacement of the body in the coordinate system depending on the measured acceleration. - View Dependent Claims (10, 11, 12)
-
Specification