STATIC ROAD GRADIENT ESTIMATION
First Claim
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1. A vehicle comprising:
- a controller configured to generate output indicative of a static road gradient estimation based on a filtered longitudinal acceleration, the filtered longitudinal acceleration being dependent upon a derivative of a longitudinal acceleration;
wherein an initial value of the static road gradient estimation corresponds to at least one of a kinematic road gradient estimation and a dynamic road gradient estimation.
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Abstract
A vehicle and a vehicle system are provided with a controller that is configured to generate output indicative of a static road gradient estimation based on a filtered longitudinal acceleration. The filtered longitudinal acceleration is dependent upon a derivative of a longitudinal acceleration. An initial value of the static road gradient estimation corresponds to at least one of a kinematic road gradient estimation and a dynamic road gradient estimation.
26 Citations
20 Claims
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1. A vehicle comprising:
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a controller configured to generate output indicative of a static road gradient estimation based on a filtered longitudinal acceleration, the filtered longitudinal acceleration being dependent upon a derivative of a longitudinal acceleration; wherein an initial value of the static road gradient estimation corresponds to at least one of a kinematic road gradient estimation and a dynamic road gradient estimation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A vehicle system comprising:
a controller configured to; filter a longitudinal acceleration based on a derivative of the longitudinal acceleration corresponding to a longitudinal jerk, generate output indicative of a static road gradient estimation based on the filtered longitudinal acceleration, and generate output indicative of a static quality factor based on the longitudinal jerk. - View Dependent Claims (15, 16, 17)
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18. A method for estimating a static road gradient comprising:
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filtering input indicative of a longitudinal acceleration based on a derivative of the longitudinal acceleration; generating output indicative of a static road gradient estimation based on the filtered longitudinal acceleration; and generating output indicative of a static quality factor based on the derivative. - View Dependent Claims (19, 20)
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Specification