Patent application number | Description | Published |
20080300766 | Cruise control system and method - In a cruise control system for a vehicle, a cruise ECU calculates a cornering resistance applied to the vehicle based upon a steering angle, when a vehicle turns. The cruise ECU calculates a speed reduction amount as a correction vehicle speed based upon the cornering resistance. The cruise ECU subtracts the correction vehicle speed from a set vehicle speed to set a target vehicle speed so that the vehicle speed becomes lower as the cornering resistance is larger. The cruise ECU controls the vehicle speed to be within a permissible speed range of the target vehicle speed. | 12-04-2008 |
20090005945 | VEHICLE SPEED CONTROL SYSTEM - A vehicle speed control system starts an automatic decelerating operation with a maximum permissible decelerating physical amount “G | 01-01-2009 |
20090024354 | Road gradient estimating system - An estimated gradient value of a road is calculated based on a vehicle acceleration “A” and a time varying portion “A′” of a wheel speed. In a case that an acceleration corresponding value “Ggrad0” for the estimated gradient value is not regarded as indicating an exact figure, due to influences of disturbances, the acceleration corresponding value “Ggrad0” is corrected by a limiting value for rate-of-change with regard to the road gradient depending on respective vehicle speed, and by a limiting value for the road gradient. As a result, the acceleration corresponding value “Ggrad” for the estimated gradient value can be more exactly obtained. | 01-22-2009 |
20090043474 | APPARATUS AND SYSTEM FOR CONTROLLING AUTOMATIC STOPPING OF VEHICLE - A control apparatus is provided to control the stopping of a vehicle. The control apparatus comprises a speed detector that detects a speed of a vehicle, speed acquiring means, target setting means, and control means. The speed acquiring means acquires an actual speed of the vehicle from detected results of the speed detector. The target setting means sets a target acceleration of the vehicle depending on the actual speed when the vehicle is stopped automatically. The control means controls an actual acceleration of the vehicle at the target acceleration. | 02-12-2009 |
20090048755 | Vehicle speed control device and method - A vehicle speed control device calculates a desired axle torque for maintaining a speed of a vehicle to a set speed, and conducts cruise control. Specifically, the vehicle speed control device calculates a drive force including a feedforward component corresponding to the set speed and a travel resistance against the travel of the vehicle, and a feedback component corresponding to a deviation of the set speed from the actual speed of the vehicle as a desired axle torque. The vehicle speed control device interrupts the cruise control when a requested drive axle torque requested by an accelerator operation during the cruise control exceeds the desired axle torque, and restarts the cruise control when the requested drive axle torque becomes lower than the desired axle torque. | 02-19-2009 |
20100185375 | Acceleration control apparatus for vehicle - A reliability for a power-train feed-forward torque may be decreased when a degree of reliability for an estimated braking torque is decreased due to disturbance factors. A power-train feedback torque is corrected based on a degree of reliability for a power-train torque, for which a reliability for a braking condition is taken into account. In a similar manner, a brake feedback torque is corrected based on a degree of reliability for a braking torque, for which a reliability for a power-train condition is taken into account. Accordingly, it is possible to compensate the decrease of reliability for the power-train feed-forward torque or brake feed-forward torque by the correction for the power-train feedback torque or the brake feedback torque. | 07-22-2010 |
20100332096 | Acceleration control apparatus for vehicle - An object of the invention is to provide an acceleration control apparatus, according to which accuracy for feed-forward torque may not be decreased even when a calculating accuracy for an estimated-slope torque would be decreased. Reliability of estimated slope is calculated and feedback torque is corrected, in such a manner that a gain for a feedback control portion is increased when the reliability of the estimated slope becomes lower. It is, therefore, possible to compensate a possible decrease of the accuracy of the feed-forward torque by correcting the feedback torque in accordance with the reliability of the estimated slope. | 12-30-2010 |
Patent application number | Description | Published |
20120182140 | OBSTACLE NOTIFICATION APPARATUS - An obstacle notification apparatus uses a sight determination unit for determining a visible area of a driver in a subject vehicle based on whether another vehicle is present around the subject vehicle and a vehicle height of the subject vehicle. After determining whether an obstacle is within the sight of the driver or not, a notification mode is selected to alert the driver of the presence of an obstacle, thereby enabling nuisance-free notification of the obstacle from the obstacle notification apparatus. | 07-19-2012 |
20120185160 | IN-VEHICLE APPARATUS AND OBSTACLE REPORT SYSTEM - In a left-hand traffic rule, a subject vehicle turns right at an intersection and then passes over a crosswalk, which is corresponded to by a pedestrian-use traffic signal. When the pedestrian-use traffic signal presents a green color as a currently indicating signal color, an obstacle report range is designated as covering both an area A and an area B so as to report an existence of an obstacle. In contrast, when the pedestrian-use traffic light presents a red color as a currently indicating signal color, an obstacle report range is designated as covering only the area A during a red light elapsed time ranging greater than a first marginal time and less than a time, which is obtained by subtracting a second marginal time from a red light cycle time. | 07-19-2012 |
20120330527 | DRIVE ASSIST SYSTEM AND WIRELESS COMMUNICATION DEVICE FOR VEHICLE - A drive assist system includes: first and second wireless communication devices on first and second vehicles. The first wireless communication device includes: a first distance calculation device for calculating a satellite positioning distance between the first and second vehicles; and a difference calculation device for calculating a distance difference between the satellite positioning distance and a distance to the second vehicle obtained by a ranging sensor in the first vehicle. The second wireless communication device includes: a second distance calculation device for calculating a satellite positioning distance between the second and another second vehicles; and an inter-vehicle distance determination device for estimating an inter-vehicle distance between the second and another second vehicles based on the distance difference and the satellite positioning distance calculated by the second distance calculation device, assuming the inter-vehicle distance is detected by a ranging sensor in the second vehicle. | 12-27-2012 |
20130079953 | CONVOY TRAVEL APPARATUS - A convoy travel apparatus in a subject vehicle of a convoy transmits a convoy travel information, which includes the maximum allowable number and the currently-included number of vehicles in the convoy. The apparatus determines whether the subject vehicle is blocking a signal from a leader vehicle of the convoy in which the subject vehicle is traveling as a follower vehicle, where the signal being blocked by the subject vehicle may not reach a position of a rearmost vehicle in the convoy. When the subject vehicle is determined to be blocking the signal, the subject vehicle transmits the convoy travel information indicating that the subject vehicle as a leader vehicle (i.e., a representative leader vehicle) of the convoy, thereby enabling a newly-joining vehicle to receive the convoy travel information transmitted from the follower vehicle in the convoy. | 03-28-2013 |
20130080041 | CONVOY TRAVEL APPARATUS - A convoy travel apparatus transmits convoy travel information including a whole convoy ID and a sub-convoy ID when a subject vehicle is in a convoy travel state, and performs a convoy travel control by utilizing the sub-convoy ID. Further, a second vehicle of the whole convoy is a leader vehicle of a sub-convoy and is also a follower vehicle in a forward sub-convoy, thereby (i) determining the convoy travel control of itself by receiving the convoy travel information of the sub-convoy in which the subject vehicle is traveling as the follower vehicle and (ii) transmitting the convoy travel information including the content of the determined convoy travel control. Thus, the follower vehicle in the sub-convoy lead by the subject vehicle performs the convoy travel control based on the convoy travel information from the leader vehicle of the sub-convoy in which the subject vehicle is traveling as the follower vehicle. | 03-28-2013 |