Trailer length estimation in hitch angle applications
First Claim
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1. A device for estimating a trailer length, comprising:
- a processor in communication with a wheel steer angle sensor and a hitch angle sensor, the processor operable to;
determine an average ratio between a wheel steer angle and a hitch angle; and
calculate the trailer length by fitting the average ratio to a predictive model and setting the trailer length to a trailer length value that is assigned to a ratio value matching the average ratio.
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Abstract
A vehicle system for estimating a trailer length is disclosed and includes a first sensor for measuring a wheel steer angle and a second sensor for measuring a hitch angle. A processor is in communication with the at least one sensor and is operable to determine a ratio between the wheel steer angle and the hitch angle, generate a running average of the ratio, and calculate the trailer length based on an average ratio between the wheel steer angle and the hitch angle.
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Citations
19 Claims
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1. A device for estimating a trailer length, comprising:
a processor in communication with a wheel steer angle sensor and a hitch angle sensor, the processor operable to; determine an average ratio between a wheel steer angle and a hitch angle; and calculate the trailer length by fitting the average ratio to a predictive model and setting the trailer length to a trailer length value that is assigned to a ratio value matching the average ratio. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A vehicle system for estimating a trailer length, comprising:
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a first sensor for measuring a wheel steer angle and a second sensor for measuring a hitch angle; and a processor operable to; determine an average ratio between the wheel steer angle and the hitch angle; and calculate the trailer length by matching the average ratio to a ratio value in a look up table and setting the trailer length to a trailer length value associated with the ratio value. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method for estimating a trailer length, comprising the steps of:
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measuring a wheel steer angle with a first sensor; measuring a hitch angle with a second sensor; and providing a processor for; determining an average ratio between the wheel steer angle and the hitch angle; and calculating the trailer length by matching the average ratio to a ratio value in a look up table and setting the trailer length to a trailer length value associated with the ratio value. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification