Vehicle speed control system
First Claim
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1. A vehicle speed control system for a vehicle, comprising:
- a steer angle sensor sensing a steer angle;
a vehicle speed sensor sensing a vehicle speed of the vehicle;
a target vehicle speed setting device for setting a target vehicle speed;
a drive system generating drive force of the vehicle; and
a controller connected with said steer angle sensor, said vehicle speed sensor, said target vehicle speed setting device and said drive system, said controller configured to, calculate a lateral acceleration of the vehicle on the basis of the steer angle and the vehicle speed, calculate a correction quantity based on the lateral acceleration and the vehicle speed, calculating a command vehicle speed on the basis of the vehicle speed, the target vehicle speed, a variation of the command vehicle speed, and the correction quantity calculated based on the lateral acceleration and the vehicle speed, and controlling said drive system to bring the vehicle speed closer to the command vehicle speed.
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Abstract
A vehicle speed control system for a vehicle comprises a lateral acceleration sensor, a vehicle speed sensor, a target vehicle speed setting device, a drive system of the vehicle, and a controller connected. The controller is arranged to calculate a correction quantity on the basis of the lateral acceleration and the vehicle speed, to calculate a command vehicle speed on the basis of the vehicle speed, the target vehicle speed, a variation of the command vehicle speed and the correction quantity, and to control the drive system to bring the vehicle speed closer to the command vehicles speed.
34 Citations
12 Claims
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1. A vehicle speed control system for a vehicle, comprising:
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a steer angle sensor sensing a steer angle;
a vehicle speed sensor sensing a vehicle speed of the vehicle;
a target vehicle speed setting device for setting a target vehicle speed;
a drive system generating drive force of the vehicle; and
a controller connected with said steer angle sensor, said vehicle speed sensor, said target vehicle speed setting device and said drive system, said controller configured to, calculate a lateral acceleration of the vehicle on the basis of the steer angle and the vehicle speed, calculate a correction quantity based on the lateral acceleration and the vehicle speed, calculating a command vehicle speed on the basis of the vehicle speed, the target vehicle speed, a variation of the command vehicle speed, and the correction quantity calculated based on the lateral acceleration and the vehicle speed, and controlling said drive system to bring the vehicle speed closer to the command vehicle speed. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A vehicle speed control system comprising:
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a command vehicle speed variation determining section that calculates a command OI vehicle speed variation on the basis of a vehicle speed and a target vehicle speed set by a vehicle operator;
a lateral acceleration vehicle speed correction quantity calculating section that calculates a lateral acceleration of a vehicle and calculates a correction quantity from a map representative of a relationship between the correction quantity and the lateral acceleration by using calculated lateral acceleration;
a controlling section that controls a drive system of the vehicle so as to bring the vehicle speed closer to the command vehicle speed; and
said command vehicle speed variation determining section determining the command vehicle speed variation at the time after the traveling on the curved road is terminated, on the basis of one of the vehicle speed at the time when the curved road traveling is terminated and a deviation between the vehicle speed at the time when the vehicle starts traveling on the curved road and the vehicle speed at the time when the curved road traveling is terminated, instead of calculating on the basis of the vehicle speed and the target vehicle speed. - View Dependent Claims (9, 10)
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11. A vehicle speed control system comprising:
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a controller configured for, determining whether the vehicle is traveling on a curved road, determining a variation of a command vehicle speed at the time after the traveling on if the curved road is terminated, on the basis of one of a vehicle speed at the time when the curved road traveling is terminated and a deviation between the vehicle speed at the time when the vehicle starts traveling on the curved road and the vehicle speed at the time when the curved road traveling is terminated, and controlling a drive system of the vehicle so as to bring the vehicle speed closer to the command vehicle speed.
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12. A vehicle speed control system for a vehicle, comprising:
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vehicle speed detecting means for detecting a vehicle speed of the vehicle;
lateral acceleration calculating means for calculating a lateral acceleration of the vehicle;
correction quantity calculating means for calculating a correction quantity based on the lateral acceleration and the vehicle speed;
command vehicle speed calculating means for calculating a command vehicle speed on the basis of the vehicle speed, a target vehicle speed, a predetermined variation of the command vehicle speed, and the correction quantity calculated based on the lateral acceleration and the vehicle speed; and
control means for controlling a drive system to bring the vehicle speed closer to the command vehicle speed.
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Specification