Driving assist apparatus and method for vehicle
First Claim
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1. A driving assist apparatus for a vehicle, comprising:
- a computing portion that computes a path that extends from an initial position of the vehicle to a target position of the vehicle and that includes a changing steer region that defines a region where a steering angle is changed during the driving of the vehicle and a fixed steer region that defines a region where the steering angle is fixed so that the steering angle does not change while maintaining a predetermined steering angle during the driving of the vehicle;
an automatic steering portion that execute automatic steering of the vehicle in order to guide the vehicle along the path to the target position;
an alarm device that gives an alarm to a driver if a vehicle speed exceeds a predetermined alarm vehicle speed during an operation of the automatic steering portion; and
an alarm vehicle speed setting portion that sets the alarm vehicle speed,wherein the alarm vehicle speed setting portion sets the alarm vehicle speed higher for the fixed steer region than for the changing steer region.
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Abstract
A driving assist apparatus and method for a vehicle capable of guiding the vehicle at appropriate vehicle speed in accordance with the path is provided. The alarm vehicle speed for informing a driver of overspeed during driving assist is set lower for a changing steer region than for a fixed steer region. The lower alarm vehicle speed is set before the changing steer region is entered. Therefore, in the changing steer region, the vehicle speed can be sufficiently reduced, so that a set amount of steering can be accomplished. In the fixed steer region, the vehicle speed can be increased so as to reduce the time of travel.
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Citations
17 Claims
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1. A driving assist apparatus for a vehicle, comprising:
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a computing portion that computes a path that extends from an initial position of the vehicle to a target position of the vehicle and that includes a changing steer region that defines a region where a steering angle is changed during the driving of the vehicle and a fixed steer region that defines a region where the steering angle is fixed so that the steering angle does not change while maintaining a predetermined steering angle during the driving of the vehicle; an automatic steering portion that execute automatic steering of the vehicle in order to guide the vehicle along the path to the target position; an alarm device that gives an alarm to a driver if a vehicle speed exceeds a predetermined alarm vehicle speed during an operation of the automatic steering portion; and an alarm vehicle speed setting portion that sets the alarm vehicle speed, wherein the alarm vehicle speed setting portion sets the alarm vehicle speed higher for the fixed steer region than for the changing steer region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A driving assist method for a vehicle, comprising:
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computing a path that extends from an initial position of the vehicle to a target position of the vehicle and that includes a changing steer region that defines a region where a steering angle is changed during the driving of the vehicle and a fixed steer region that defines a region where the steering angle is fixed so that the steering angle does not change while maintaining a predetermined steering angle during the driving of the vehicle; executing automatic steering of the vehicle in order to guide the vehicle along the path to the target position; giving an alarm to a driver if a vehicle speed exceeds a predetermined alarm vehicle speed during an operation of the automatic steering portion; and setting the alarm vehicle speed, wherein the alarm vehicle speed is set higher for the fixed steer region than for the changing steer region. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A driving assist apparatus for a vehicles comprising:
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computing means for computing a path that extends from an initial position of the vehicle to a target position of the vehicle and that includes a changing steer region that defines a region where a steering angle is changed during the driving of the vehicle and a fixed steer region that defines a region where the steering angle is fixed so that the steering angle does not change while maintaining a predetermined steering angle during the driving of the vehicle; automatic steering means for executing automatic steering of the vehicle in order to guide the vehicle along the path to the target position; alarm means for giving an alarm to a driver if a vehicle speed exceeds a predetermined alarm vehicle speed during an operation of the automatic steering means; and alarm vehicle speed setting means for setting the alarm vehicle speed, wherein the alarm vehicle speed setting means sets the alarm vehicle speed higher for the fixed steer region than for the changing steer region.
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Specification