Apparatus and method for automatically controlling vehicular velocity
First Claim
1. A control apparatus for an automotive vehicle, comprising:
- a vehicular velocity detector detecting a vehicular velocity;
an inter-vehicle distance detector detecting an inter-vehicle distance from the vehicle to another vehicle which is running ahead of the vehicle;
a target vehicular velocity calculator calculating a target value of the vehicular velocity according to which a detected value of the inter-vehicle distance is made coincident with a target value of the inter-vehicle distance;
a vehicular velocity controller, the vehicular velocity controller being responsive to the calculated target value of the vehicular velocity and generating and outputting an actuation command to control the vehicular velocity in such a manner that the detected value of the vehicular velocity is made coincident with the calculated target value of the vehicular velocity;
a vehicular velocity variation actuator, the vehicular velocity variation actuator being responsive to the actuation command from the vehicular velocity controller, actuating the vehicle to vary the vehicular velocity so that the detected value of the vehicular velocity is made coincident with the calculated target value of the vehicular velocity;
a lateral acceleration detector detecting a lateral acceleration imposed on a vehicle body; and
a target vehicular velocity corrector, the target vehicular velocity corrector being responsive to a detected value of the lateral acceleration and correcting the calculated target value of the vehicular velocity according to the detected value of the lateral acceleration.
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Abstract
In apparatus and method for controlling a vehicular velocity for an automotive vehicle, a vehicular velocity and an inter-vehicle distance from the vehicle to another vehicle which is running ahead of the vehicle are detected, a lateral acceleration imposed on a vehicle body of the vehicle which is generally developed when the vehicle is running on a curved road is detected, a target value of the vehicular velocity of the vehicle according to which a detected value of the inter-vehicle distance is made equal to value of a target inter-vehicle distance is calculated, a correction is made on the calculated value of the target vehicular velocity according to a detected value (magnitude) of the lateral acceleration (lateral G), the vehicular velocity of the vehicle is controlled in such a manner that the detected value of the vehicular velocity is made equal to the corrected target vehicular velocity.
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Citations
18 Claims
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1. A control apparatus for an automotive vehicle, comprising:
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a vehicular velocity detector detecting a vehicular velocity;
an inter-vehicle distance detector detecting an inter-vehicle distance from the vehicle to another vehicle which is running ahead of the vehicle;
a target vehicular velocity calculator calculating a target value of the vehicular velocity according to which a detected value of the inter-vehicle distance is made coincident with a target value of the inter-vehicle distance;
a vehicular velocity controller, the vehicular velocity controller being responsive to the calculated target value of the vehicular velocity and generating and outputting an actuation command to control the vehicular velocity in such a manner that the detected value of the vehicular velocity is made coincident with the calculated target value of the vehicular velocity;
a vehicular velocity variation actuator, the vehicular velocity variation actuator being responsive to the actuation command from the vehicular velocity controller, actuating the vehicle to vary the vehicular velocity so that the detected value of the vehicular velocity is made coincident with the calculated target value of the vehicular velocity;
a lateral acceleration detector detecting a lateral acceleration imposed on a vehicle body; and
a target vehicular velocity corrector, the target vehicular velocity corrector being responsive to a detected value of the lateral acceleration and correcting the calculated target value of the vehicular velocity according to the detected value of the lateral acceleration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A control apparatus for an automotive vehicle, comprising:
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vehicular velocity detecting means for detecting a vehicular velocity;
inter-vehicle distance detecting means for detecting an inter-vehicle distance from the vehicle to another vehicle which is running ahead of the vehicle;
lateral acceleration detecting means for detecting a lateral acceleration imposed on a vehicle body;
vehicular velocity variation actuating means for actuating the vehicle to vary the vehicular velocity; and
controlling means for calculating a target value of the inter-vehicle distance on the basis of detected values of the vehicular velocity and of the inter-vehicle distance, for calculating a target value of the vehicular velocity according to which the detected value of the inter-vehicle distance is made coincident with the target value of the inter-vehicle distance, for correcting the calculated target value of the vehicular velocity according to a detected value of the lateral acceleration, and for generating and outputting an actuation command to the vehicular velocity variation actuating means to vary the vehicular velocity in accordance with the corrected target value of the vehicular velocity.
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18. A method for controlling a vehicular velocity for an automotive vehicle, comprising:
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detecting a vehicular velocity;
detecting an inter-vehicle distance from the vehicle to another vehicle which is running ahead of the vehicle;
detecting a lateral acceleration imposed on a vehicle body of the vehicle;
calculating a target vehicular velocity of the vehicle according to which a detected value of the inter-vehicle distance is made coincident with a target value of the inter-vehicle distance;
correcting the calculated target value of the vehicular velocity according to a detected value of the lateral acceleration;
controlling the vehicular velocity of the vehicle in such a manner that the detected value of the vehicular velocity is made coincident with the corrected target value of the vehicular velocity;
generating an actuation command, the actuation command being responded to the corrected target value of the vehicular velocity; and
actuating the vehicle to vary the vehicular velocity to make the detected value of the vehicular velocity coincident with the corrected target value of the vehicular velocity.
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Specification