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;
- a vehicular velocity controlling command value determining section that selectively determines a vehicular velocity controlling command value from one of a first set vehicular velocity based on an inter-vehicle distance control for a preceding vehicle which is running ahead of the vehicle and a second set vehicular velocity based on a manual setting depending upon a magnitude of which one is smaller than the other and depending upon whether the preceding vehicle is present;
a vehicular drive controlling section that drivingly controls one of a vehicular engine, a vehicular transmission, and a vehicular brake system to make an actual vehicular velocity substantially equal to the vehicular velocity controlling command value;
a vehicular velocity controlling vehicular velocity command value modification determining section that determines whether a modification of the vehicular velocity controlling command value to a new one is made; and
a vehicular velocity command value variation rate determining section that determines a deviation between the new vehicular velocity command value and the actual vehicular velocity and determines a variation rate for the vehicular velocity to reach to the new vehicular velocity command value when the vehicular velocity command value modification determining section determines that the modification is made in such a manner that as a magnitude of the deviation becomes larger, the variation rate becomes larger and as the magnitude of the deviation becomes smaller, the variation rate becomes smaller.
1 Assignment
0 Petitions
Accused Products
Abstract
In automatic vehicular velocity controlling apparatus and method for automotive vehicle, a target vehicular velocity to maintain a predetermined inter-vehicle distance between a preceding vehicle which is running ahead of the vehicle is set as a first set vehicular velocity and a vehicular velocity of the vehicle (host vehicle) is controlled to give one of the first set vehicular velocity and a second set vehicular velocity by a manual setting through a set switch and an accelerate switch or coast switch if the preceding vehicle is present and is controlled to maintain the vehicular velocity at the second set vehicular velocity if no preceding vehicle is present. Then, when the set vehicular velocity is modified through the above-described accelerate switch or coast switch, a vehicular velocity variation rate is determined in accordance with a deviation between the actual vehicular velocity and a newly set vehicular velocity after the modification of the vehicular occupant'"'"'s vehicular velocity.
-
Citations
12 Claims
-
1. An automatic vehicular velocity controlling system for an automotive vehicle, comprising;
-
a vehicular velocity controlling command value determining section that selectively determines a vehicular velocity controlling command value from one of a first set vehicular velocity based on an inter-vehicle distance control for a preceding vehicle which is running ahead of the vehicle and a second set vehicular velocity based on a manual setting depending upon a magnitude of which one is smaller than the other and depending upon whether the preceding vehicle is present;
a vehicular drive controlling section that drivingly controls one of a vehicular engine, a vehicular transmission, and a vehicular brake system to make an actual vehicular velocity substantially equal to the vehicular velocity controlling command value;
a vehicular velocity controlling vehicular velocity command value modification determining section that determines whether a modification of the vehicular velocity controlling command value to a new one is made; and
a vehicular velocity command value variation rate determining section that determines a deviation between the new vehicular velocity command value and the actual vehicular velocity and determines a variation rate for the vehicular velocity to reach to the new vehicular velocity command value when the vehicular velocity command value modification determining section determines that the modification is made in such a manner that as a magnitude of the deviation becomes larger, the variation rate becomes larger and as the magnitude of the deviation becomes smaller, the variation rate becomes smaller. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. An automatic vehicular velocity controlling method for an automotive vehicle, comprising;
-
selectively determining a vehicular velocity controlling command value from one of a first set vehicular velocity based on an inter-vehicle distance control for a preceding vehicle which is running ahead of the vehicle and a second set vehicular velocity based on a manual setting depending upon a magnitude of which one is smaller than the other and depending upon whether the preceding vehicle is present;
drivingly controlling one of a vehicular engine, a vehicular transmission, and a vehicular brake system to make an actual vehicular velocity substantially equal to the vehicular velocity controlling command value;
determining whether a modification of the vehicular velocity controlling command value to a new one is made; and
determining a deviation between the new vehicular velocity command value and the actual vehicular velocity and determines a variation rate for the vehicular velocity to reach to the new vehicular velocity command value when the vehicular velocity command value modification determining section determines that the modification is made in such a manner that as a magnitude of the deviation becomes larger, the variation rate becomes larger and as the magnitude of the deviation becomes smaller, the variation rate becomes smaller.
-
Specification