Auxiliary steering system associated with anti-skid control system for use in motor vehicle
First Claim
1. A control system for use in a motor vehicle with two pairs of left and right wheels, comprising:
- a braking control device for independently controlling braking pressures for at least one of said pairs of left and right wheels, said braking control device including;
braking actuator means for adjusting braking pressures to be applied to said pair of left and right wheels in response to braking control signals;
wheel sensor means for sensing rotation speeds of said pair of left and right wheels and generating signals indicative of the sensed rotational speeds thereof;
target braking pressure determining means for determining target braking pressures for said pair of left and right wheels on the basis of said rotational speed signals from said wheel sensor means; and
braking pressure control means for outputting said braking control signals to said braking actuator means so that the braking pressures for said pair of left and right wheels assume the determined target braking pressures, respectively; and
a steering control device for controlling the steering of said pair of left and right wheels in connection with the braking control performed by said braking control device, said steering control device including;
steering actuator means for adjusting steering angles of said pair of left and right wheels in response to steering control signals; and
steering angle control means for determining the steering angles of said pair of left and right wheels on the basis of the braking pressures for said pair of left and right wheels and outputting said steering control signals indicative of the determined steering angles to said steering actuator means so that said pair of left and right wheels assume the determined steering angles, thereby canceling any yaw moment generated by said braking pressures applied to said pair of left and right wheels.
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Accused Products
Abstract
An auxiliary steering control system in connection with an anti-skid control system for use in a motor vehicle with two parts of left and right wheels, the anti-skid control system being adapted to independently control braking pressures for at least one pair of left and right wheels and including a braking actuator for adjusting braking pressures to be applied to the pair of left and right wheels. The braking actuator is controlled so that the braking pressures therefor approach the target braking forces determined on the basis of the rotational speeds of the wheels. The steering control device includes a steering actuator for adjusting steering angles of the pair of left and right wheels in response to steering control signals from a steering angle control unit. The steering control unit determines the steering angles of the pair of left and right wheels on the basis of the difference between the braking pressures therefor and outputs the steering control signals thereto so that the pair of left and right wheels assume the determined steering angles.
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Citations
19 Claims
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1. A control system for use in a motor vehicle with two pairs of left and right wheels, comprising:
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a braking control device for independently controlling braking pressures for at least one of said pairs of left and right wheels, said braking control device including; braking actuator means for adjusting braking pressures to be applied to said pair of left and right wheels in response to braking control signals; wheel sensor means for sensing rotation speeds of said pair of left and right wheels and generating signals indicative of the sensed rotational speeds thereof; target braking pressure determining means for determining target braking pressures for said pair of left and right wheels on the basis of said rotational speed signals from said wheel sensor means; and braking pressure control means for outputting said braking control signals to said braking actuator means so that the braking pressures for said pair of left and right wheels assume the determined target braking pressures, respectively; and a steering control device for controlling the steering of said pair of left and right wheels in connection with the braking control performed by said braking control device, said steering control device including; steering actuator means for adjusting steering angles of said pair of left and right wheels in response to steering control signals; and steering angle control means for determining the steering angles of said pair of left and right wheels on the basis of the braking pressures for said pair of left and right wheels and outputting said steering control signals indicative of the determined steering angles to said steering actuator means so that said pair of left and right wheels assume the determined steering angles, thereby canceling any yaw moment generated by said braking pressures applied to said pair of left and right wheels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A control system for use in a motor vehicle having a front and rear pair of left and right wheels, comprising:
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anti-skid braking system means for independently controlling braking pressures for the left and right wheels of at least one of said pairs of wheels during braking operation so that slip ratios of said left and right wheels approach target slip ratios, respectively, said target slip ratios being determined by said anti-lock braking system means in response to rotational speeds of said left and right wheels; means for obtaining a pressure difference between said braking pressures for said left and right wheels; means for calculating a steering angle of said at least one pair of wheels in accordance with the obtained pressure difference so as to cancel a yaw moment, said yaw moment being generated by said motor vehicle due to a braking force difference caused by the pressure difference; and drive means for steering said at least one pair of wheels in accordance with the steering angle calculated by said calculating means. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification