Vehicle steering control device
A steering control and vehicle technology, which is applied to automatic steering control components, safety devices of power plant control mechanisms, steering mechanisms, etc. The degree of increase and other problems, to achieve the effect of improving steering ability and operability, oversteering suppression, and oversteering suppression
Active Publication Date: 2010-12-29
MITSUBISHI MOTORS CORP
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] In particular, by the oversteer prevention technique in Related Document 1, the driving torque may be increased beyond the gripping force of the inside wheel
In this case, it is difficult for the vehicle to keep going straight due to slipping of the inside wheel, and the degree of oversteer of the vehicle increases even though the drive torque difference between the left and right wheels is adjusted to prevent oversteer
Method used
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Embodiment Construction
[0030] Embodiments of the present invention will be described below with reference to the drawings.
[0031] As shown in FIG. 1 , an engine 2 is mounted on a vehicle 1 . Torque output from the engine 2 is transmitted to the center differential 5 via the transmission 3 and the intermediate gear mechanism 4 . The center differential 5 has front and rear wheel restricting mechanisms 19 which will be described later.
[0032] The torque output from the center differential 5 is transmitted to the right front wheel 8R and the left front wheel 8L via the front differential 6 and the respective shafts 7L and 7R, respectively. The torque output from the center differential 5 is transmitted to the right rear wheel 14R and the left rear wheel 14R via the front hypoid gear mechanism 9, the propulsion shaft 10, the rear hypoid gear mechanism 11, the rear differential 12 and the respective shafts 13R and 13L, respectively. Rear wheel 14L. The rear differential 12 has a left and right whe...
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The turning control apparatus for a vehicle has a driving torque controlling mechanism adjusting driving torque of left and right wheels. The apparatus includes a maximum-yaw momentum value calculating means having means for estimating an outside-wheel gripping capacity, which is capacity of adhesive friction between the outside-wheel and a road surface, and an inside-wheel gripping capacity, which is capacity of adhesive friction between the inside-wheel and the road surface, and means for calculating a torque adjustment limiting value indicating an adjustment amount of driving torque by thedriving torque controlling mechanism so that the adjustment amount does not exceed the gripping capacity. The maximum-yaw momentum value calculating means sets the maximum-yaw momentum value indicating possible yaw momentum, which is estimated if the driving torque is adjusted along with the torque-adjustment-limit value calculated by the torque adjustment limiting value calculating means.
Description
technical field [0001] The present invention relates to a steering control device for a vehicle that adjusts a driving torque between an inner wheel and an outer wheel. Background technique [0002] Many techniques have been developed to improve vehicle safety by obtaining vehicle stability during steering maneuvers. For example, Related Document 1 hereinafter discloses a technique of how to generate a yaw motion amount of a vehicle based on a vehicle yaw rate by controlling a drive torque difference between left and right wheels to control vehicle motion. [0003] [Related Document 1] H09-86378 Japanese Open Gazette [0004] However, in practice, even if the driving torque difference between the left and right wheels changes, it is difficult to generate a yaw amount in the vehicle because of the limited ability of traction or braking force (ie, the adhesion between the wheels and the road surface). This ability is also known as grip. [0005] In particular, with the tech...
Claims
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IPC IPC(8): B60W10/10B60W10/20B60W30/02B60K28/00B62D6/00B60T8/1755B60W10/12B60W10/18B60W10/188B60W30/00B60W30/045B60W40/10B60W40/109B60W40/114
CPCB60T8/1755B60W40/064B60W30/02B60T2201/14B60W10/12B60W10/18B60W40/112B60W30/045B60W40/11B60W2710/12B60W10/16B60W40/114
Inventor 三浦隆未
Owner MITSUBISHI MOTORS CORP