Adaptive cruise control method on incline
First Claim
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1. An adaptive cruise control method on an incline comprising:
- sensing, by a sensing unit, a wheel speed and a longitudinal acceleration during adaptive cruise control;
calculating, by an electronic control unit, a vehicle acceleration based on the sensed wheel speed;
estimating, by the electronic control unit, a gradient of a road from the calculated vehicle acceleration and the longitudinal acceleration;
calculating, by the electronic control unit, a resistance torque based on the estimated gradient of the road; and
controlling, by the electronic control unit, traveling and stoppage maintenance of a vehicle using the calculated resistance torque.
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Abstract
Adaptive cruise control method improves traveling performance and stoppage maintenance performance on an incline. During adaptive cruise control, a gradient of a road is estimated based on a vehicle acceleration and longitudinal acceleration to enable compensation of a resistance torque with respect to the gradient of the road, which prevents deterioration of a traveling speed of a vehicle on an incline. Also, compensating for a brake torque to prevent the vehicle from being pushed rearward when the vehicle stops or starts to go on an incline may prevent deterioration of performance on an incline.
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Citations
4 Claims
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1. An adaptive cruise control method on an incline comprising:
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sensing, by a sensing unit, a wheel speed and a longitudinal acceleration during adaptive cruise control; calculating, by an electronic control unit, a vehicle acceleration based on the sensed wheel speed; estimating, by the electronic control unit, a gradient of a road from the calculated vehicle acceleration and the longitudinal acceleration; calculating, by the electronic control unit, a resistance torque based on the estimated gradient of the road; and controlling, by the electronic control unit, traveling and stoppage maintenance of a vehicle using the calculated resistance torque. - View Dependent Claims (2, 3, 4)
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Specification