Method and apparatus for speed estimation and control
First Claim
Patent Images
1. A method of determining a speed profile for a vehicle travelling on a road comprising:
- identifying a curve of the road that is being approached by the vehicle; and
determining the speed profile for the curve by generating an acceleration limit map, the map depending on a relationship between a maximum possible longitudinal acceleration and a maximum possible lateral acceleration for traversing the curve.
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Abstract
A system and method for determining a speed profile for a vehicle travelling along a road in which a curve speed estimation unit receives inputs indicating a position of the vehicle relative to a curve ahead of the vehicle, and inputs related to vehicle velocity, curve geometry, road surface conditions, vehicle-specific data; and driver preferences. The curve sped estimation unit use at least some of the above-listed inputs to determine a speed profile for the curve by generating an acceleration limit map which depends on a relationship between a maximum possible longitudinal acceleration and a maximum possible lateral acceleration.
8 Citations
18 Claims
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1. A method of determining a speed profile for a vehicle travelling on a road comprising:
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identifying a curve of the road that is being approached by the vehicle; and determining the speed profile for the curve by generating an acceleration limit map, the map depending on a relationship between a maximum possible longitudinal acceleration and a maximum possible lateral acceleration for traversing the curve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A curve speed estimation unit for a motor vehicle operative to:
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receive inputs indicating a position of the vehicle relative to a curve of a road on which the vehicle is travelling; receive inputs related to a velocity of the vehicle; receive inputs related to geometry of the curve; receive inputs related to surface conditions of the road; receive inputs related to vehicle-specific data; receive inputs related to driver preferences; and use at least some of the above inputs to determine a speed profile for the curve by generating an acceleration limit map, the acceleration limit map depending on a relationship between a maximum possible longitudinal acceleration and a maximum possible lateral acceleration for traversing the curve. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method of determining a speed profile for a road curve being approached by a vehicle comprising:
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identifying physical characteristics of the road; identifying vehicle-specific data related to an ability of the vehicle to negotiate the curve; and determining the speed profile for the curve by generating an acceleration limit map, the map generated by considering a relationship between a maximum possible longitudinal acceleration and a maximum possible lateral acceleration for traversing the curve. - View Dependent Claims (18)
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Specification