Bump detector
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsHideto Wakabayashi, Motoki Tachiiri
Life of this patent
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Abstract
A bump detector for detecting a bump on a road surface where a vehicle travels, includes a processor, which acquires a motor torque of a motor connected to a tire, a tire angular acceleration, a motor angular acceleration, and speed information of the vehicle, calculates a force in a horizontal direction acting on the tire when the tire rides on the bump, and estimates a bump height in accordance with the force in the horizontal direction on a basis of bump information, in which peaks of a tire front-rear force in the horizontal direction before and after the tire rides on the bump on the road surface calculated in advance for each vehicle speed are associated with bump heights, and the speed information.
Claims5
A bump detector for detecting a bump on a road surface where a vehicle travels, comprising:
- a processor configured to:
- acquire a motor torque of a motor connected to a tire, a tire angular acceleration, a motor angular acceleration, and speed information of the vehicle,
- calculate a force in a horizontal direction acting on the tire when the tire rides on the bump,
- estimate a bump height in accordance with the force in the horizontal direction on a basis of bump information, in which peaks of a tire front-rear force in the horizontal direction before and after the tire rides on the bump on the road surface are calculated in advance for each vehicle speed and that are associated with bump heights, and the speed information, and
- determine whether the estimated bump height is equal to or greater than a predetermined value, and transmit the estimated bump height and position information of the vehicle to an external server or another vehicle to enable selection of an optimum traveling route in response to the estimated bump height being equal to or greater than the predetermined value.
Dependencies are inferred from the claim text.