ROAD GRADIENT ESTIMATION ARBITRATION
First Claim
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1. A vehicle comprising:
- a controller configured to generate output indicative of a road gradient based on at least one of a first estimation when a vehicle speed is less than a speed threshold and an input indicative of a longitudinal acceleration is available, a second estimation when the vehicle speed is greater than the speed threshold and the longitudinal acceleration is available, and a third estimation when the longitudinal acceleration is not available.
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Abstract
A vehicle and vehicle system are provided with a controller that is configured to generate output indicative of a road gradient based on at least one of a first estimation, a second estimation and a third estimation. The road gradient is based on the first estimation when a vehicle speed is less than a speed threshold and an input indicative of a longitudinal acceleration is available. The road gradient is based on the second estimation when the vehicle speed is greater than the speed threshold and the longitudinal acceleration is available. The road gradient is based on the third estimation when the longitudinal acceleration is not available.
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Citations
20 Claims
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1. A vehicle comprising:
a controller configured to generate output indicative of a road gradient based on at least one of a first estimation when a vehicle speed is less than a speed threshold and an input indicative of a longitudinal acceleration is available, a second estimation when the vehicle speed is greater than the speed threshold and the longitudinal acceleration is available, and a third estimation when the longitudinal acceleration is not available. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A vehicle system comprising:
a controller configured to; generate output indicative of a road gradient based on at least one of a static estimation when a vehicle speed is less than a speed threshold, a kinematic estimation when the vehicle speed is greater than the speed threshold, and a dynamic estimation when a longitudinal acceleration is not available, and generate output indicative of a quality factor corresponding to a selected estimation. - View Dependent Claims (12, 13, 14, 15)
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16. A method for arbitrating road gradient estimation, comprising:
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generating output indicative of a road gradient based on at least one of a static estimation when a vehicle speed is less than a speed threshold, a kinematic estimation when the vehicle speed is greater than the speed threshold, and a dynamic estimation when a longitudinal acceleration is not available, and generating output indicative of a quality factor corresponding to a selected estimation. - View Dependent Claims (17, 18, 19, 20)
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Specification