TRAILER LENGTH ESTIMATION IN HITCH ANGLE APPLICATIONS
First Claim
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1. An apparatus for determining an estimated trailer length comprising:
- a processor operable to;
determine a first length having a first uncertainty;
determine a second length having a second uncertainty;
compare the first length to the second length in a first comparison; and
set the estimated trailer length to the first length based on the first comparison yielding a result less than a first predetermined value.
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Abstract
A vehicle system for estimating a trailer length is disclosed. The system incorporates at least one sensor configured to measure a wheel steer angle and a trailer angle in communication with a processor. The processor is operable to determine a first length by a first computation method and determine a second length by a second computation method. The processor is further operable to validate an estimated trailer length based on the first length and the second length and perform a back-up function for the trailer based on the estimated trailer length.
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Citations
20 Claims
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1. An apparatus for determining an estimated trailer length comprising:
a processor operable to; determine a first length having a first uncertainty; determine a second length having a second uncertainty; compare the first length to the second length in a first comparison; and set the estimated trailer length to the first length based on the first comparison yielding a result less than a first predetermined value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for determining an estimated trailer length comprising:
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receiving a steering angle from a steering module; receiving a trailer angle from a hitch sensor; calculating a first length based on the steering angle and a minimum error calculation of the trailer angle; calculating a second length based on a radius of curvature of a trailer and a vehicle; and evaluating the first length and the second length to determine the estimated trailer length. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A vehicle system for estimating a trailer length comprising:
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at least one sensor configured to measure a wheel steer angle and a trailer angle; and a processor operable to; determine a first length by a first computation method; determine a second length by a second computation method; and validate an estimated trailer length based on the first length and the second length; and perform a back-up function for the trailer based on the estimated trailer length. - View Dependent Claims (17, 18, 19, 20)
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Specification