System and method for controlling vehicle velocity and inter-vehicle distance
First Claim
1. An automatic vehicular velocity controlling system for an automotive vehicle, comprising;
- an inter-vehicle distance detector to detect an inter-vehicle distance from the vehicle to a preceding vehicle which is running ahead of the vehicle;
a vehicular velocity detector to detect a vehicular velocity of the vehicle;
a relative velocity detector to detect a relative velocity of the vehicle to the preceding vehicle;
an inter-vehicle distance command value calculating section that calculates a command value of the inter-vehicle distance;
a control response characteristic determining section that determines a response characteristic of an inter-vehicle related feedback control system in accordance with the relative velocity;
a response characteristic correcting section that corrects the response characteristic of the inter-vehicle related feedback control system determined by the control response characteristic determining section in accordance with at least the inter-vehicle distance detected by the inter-vehicle distance detector;
a vehicular velocity command value calculating section that calculates an inter-vehicle related controlling vehicular velocity command value on the basis of the response characteristic of the inter-vehicle related feedback control system corrected by the response characteristic correcting section; and
a vehicular velocity controlling section that controls at least one of a driving force of the vehicle, a braking force of the vehicle, and a speed ration of a continuously variable transmission in such a manner that the vehicular velocity detected by the vehicular velocity detector is made substantially equal to the vehicular velocity command value.
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Accused Products
Abstract
In automatic vehicular velocity controlling apparatus and method for automotive vehicle having a function to maintain an inter-vehicle distance from the vehicle to a preceding vehicle which is running ahead of the vehicle at a target inter-vehicle distance, a response characteristic of an inter-vehicle related feedback control system is determined in accordance with a relative velocity of the vehicle to the preceding vehicle is corrected in accordance with the inter-vehicle distance, is corrected in accordance with a modification of a set inter-vehicle time duration by a vehicular occupant, and in accordance with an external disturbance value correspond to a road surface gradient of a slope during a vehicular run on the slope, in order to improve the response characteristic for the vehicular occupant not to give an un-match feeling to a driving sense.
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Citations
20 Claims
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1. An automatic vehicular velocity controlling system for an automotive vehicle, comprising;
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an inter-vehicle distance detector to detect an inter-vehicle distance from the vehicle to a preceding vehicle which is running ahead of the vehicle;
a vehicular velocity detector to detect a vehicular velocity of the vehicle;
a relative velocity detector to detect a relative velocity of the vehicle to the preceding vehicle;
an inter-vehicle distance command value calculating section that calculates a command value of the inter-vehicle distance;
a control response characteristic determining section that determines a response characteristic of an inter-vehicle related feedback control system in accordance with the relative velocity;
a response characteristic correcting section that corrects the response characteristic of the inter-vehicle related feedback control system determined by the control response characteristic determining section in accordance with at least the inter-vehicle distance detected by the inter-vehicle distance detector;
a vehicular velocity command value calculating section that calculates an inter-vehicle related controlling vehicular velocity command value on the basis of the response characteristic of the inter-vehicle related feedback control system corrected by the response characteristic correcting section; and
a vehicular velocity controlling section that controls at least one of a driving force of the vehicle, a braking force of the vehicle, and a speed ration of a continuously variable transmission in such a manner that the vehicular velocity detected by the vehicular velocity detector is made substantially equal to the vehicular velocity command value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An automatic vehicular velocity controlling method for an automotive vehicle, comprising;
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detecting an inter-vehicle distance from the vehicle to a preceding vehicle which is running ahead of the vehicle;
detecting a vehicular velocity of the vehicle;
detecting a relative velocity of the vehicle to the preceding vehicle;
calculating a command value of the inter-vehicle distance;
determining a response characteristic of an inter-vehicle related feedback control system in accordance with the relative velocity;
correcting the determined response characteristic of the inter-vehicle related feedback control system in accordance with at least the detected inter-vehicle distance;
calculating an inter-vehicle related controlling vehicular velocity command value on the basis of the corrected response characteristic of the inter-vehicle related feedback control system; and
controlling at least one of a driving force of the vehicle, a braking force of the vehicle, and a speed ration of a continuously variable transmission in such a manner that the detected vehicular velocity is made substantially equal to the vehicular velocity command value.
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Specification