Vehicle state estimating device, vehicle control device, and vehicle state estimating method
AssigneeToyota Jidosha Kabushiki Kaisha
InventorShingo Koumura
Life of this patent
Estimating the term…
Abstract
A vehicle state estimating device for estimating the state amount of the vehicle at high accuracy from the wheel speed irrespective of the change in the vehicle property. A vehicle state estimating device includes a wheel speed detection unit that detects a wheel speed of each vehicle wheel; a vehicle speed detection unit that detects a vehicle speed; and a state amount estimation unit that estimates an unsprung state amount and/or a sprung state amount of the vehicle, based on a wheel speed of reverse phase of left and right wheels based on the wheel speed of each wheel detected by the wheel speed detection unit, and a value obtained by dividing a wheel base of a predetermined front-rear wheel by the vehicle speed detected by the vehicle speed detection unit.
Claims5
A vehicle state estimating device comprising:
- a wheel speed detector configured to detect a wheel speed of each wheel of a vehicle;
- and
- a control unit including a processor configured to:
- detect a vehicle speed of the vehicle;
- and
- estimate an unsprung state amount and/or a sprung state amount of the vehicle, based on a wheel speed of reverse phase of left and right wheels based on the wheel speed of each wheel detected by the wheel speed detector, and a value obtained by dividing a wheel base of a predetermined front-rear wheel by the vehicle speed.
A vehicle control device comprising:
- a wheel speed detector configured to detect a wheel speed of each wheel of a vehicle;
- a control unit including a processor configured to:
- detect a vehicle speed of the vehicle;
- and
- estimate an unsprung state amount and/or a sprung state amount of the vehicle, based on a wheel speed of reverse phase of left and right wheels based on the wheel speed of each wheel detected by the wheel speed detector, and a value obtained by dividing a wheel base of a predetermined front-rear wheel by the vehicle speed;
- and
- control a suspension device of the vehicle based on the unsprung state amount and/or the sprung state amount.
A vehicle state estimating method comprising:
- detecting, using a wheel speed detector, a wheel speed of each wheel of a vehicle;
- detecting, using a control unit, a vehicle speed of the vehicle;
- and
- estimating, using the control unit, an unsprung state amount and/or a sprung state amount of the vehicle, based on a wheel speed of reverse phase of left and right wheels based on the detected wheel speed of each wheel, and a value obtained by dividing a wheel base of a predetermined front-rear wheel by the detected vehicle speed.
Dependencies are inferred from the claim text.