Abstract:
A preceding vehicle speed estimation unit estimates a preceding vehicle speed after a predetermined period of time based on a preceding vehicle speed and an acceleration of the preceding vehicle, and an ACC target vehicle speed setting unit sets a target vehicle speed for the vehicle following based on an inter-vehicle distance between the vehicle and preceding vehicle and the preceding vehicle speed after a predetermined period of time. Then, during the stop maintaining control, an ACC resetting acceptability determination unit compares the target vehicle speed and a reference threshold. When the target vehicle speed is greater than the reference threshold, it is determined to accept ACC resetting in response to the driver's input operation, and, when the target vehicle speed is equal to or less than the reference threshold, it is determined not to accept ACC resetting.
Abstract:
There is provided a vehicle motion control system which carries out acceleration and deceleration of a vehicle which satisfies driving feeling of a driver even in the state where a lateral motion of the vehicle is not involved. The vehicle motion control system includes a curve shape acquisition section 2 for acquiring a curve shape ahead of an own vehicle, an own vehicle position acquisition section 3 for acquiring a position of the own vehicle, and a vehicle motion control calculation section 4 for calculating a command value of a longitudinal acceleration generated for the vehicle based on the curve shape and the position of the own vehicle. The vehicle motion control calculation section 4 calculates a plurality of negative longitudinal acceleration command values during travel of the own vehicle from before a curve to a point where a curve curvature becomes constant or maximum after the vehicle enters into the curve. The longitudinal acceleration command values are changed based on at least one of: an estimate of the maximum lateral acceleration which is presumably generated during traveling a curve ahead of the own vehicle; a grade of the road ahead of the own vehicle, pedal operation by the driver, and a turning direction.
Abstract:
In a vehicle driving support apparatus, if a brake pedal operation by a driver is detected during a braking control, a cruise control unit determines that it is highly likely that the driver recognizes a possibility of a collision of a subject vehicle and a obstacle, and halts the braking control. On the other hand, if a depression amount of the brake pedal by the driver changes to a release side at or over a preset speed, the cruise control unit restarts the halted braking control.
Abstract:
A vehicle braking system includes a slip control system operable in an electronic stability control (ESC) mode to automatically and selectively apply the brakes in an attempt to stabilize the vehicle when an instability condition has been sensed. The slip control system is further operable in an adaptive cruise control (ACC) mode to automatically apply the brakes to slow the vehicle in response to a control signal. The slip control system includes a variable speed motor drive piston pump for supplying pressurized fluid pressure to the brakes through a valve arrangement. In the ESC mode, the pump motor operates in an ESC speed range, and in the ACC mode, the pump motor operates in an ACC speed range lower than the ESC speed range. The slip control system further includes an attenuator connected to a pump outlet for dampening pump output pressure pulses prior to application to the brakes. The attenuator includes an elastomeric member located in an attenuator chamber of a housing. The attenuator chamber defines a shoulder and the elastomeric member includes a flange which rests on the shoulder and locates the elastomeric member in a predetermined axial position within the attenuator chamber. An outside wall of the elastomeric member includes circumferentially extending grooves defining ribs between adjacent grooves.
Abstract:
A vehicle speed control system starts an automatic decelerating operation with a maximum permissible decelerating physical amount “Gmax”, when an electronic control unit determines that a necessary decelerating physical amount for decreasing a vehicle speed “v” to a target vehicle speed “vt” at a curve starting point becomes larger than the maximum permissible decelerating physical amount “Gmax”. The vehicle speed control system terminates the automatic decelerating operation, when required decelerating physical amount by a braking operation during the automatic decelerating operation becomes larger than an actual control decelerating physical amount for the automatic decelerating operation. The electronic control unit calculates the necessary decelerating physical amount “Gref” based on a distance “d” to the curve starting point and the vehicle speed “v”, in order to re-start an automatic decelerating operation with the decelerating physical amount “Gref”, when the required decelerating physical amount becomes lower than the decelerating physical amount “Gref”.
Abstract:
A safety device for motor vehicles includes an impact detection system and a triggering device for triggering a braking operation as a function of a signal of the impact detection system characterized in that the triggering device is designed for the purpose of triggering the braking operation when the impact detection system indicates the beginning of an impact.
Abstract:
A vehicle automatic operation control device includes a target required torque calculating part (31) which determines the target required torque from the respective calculated values of a feed-forward calculated value and a feedback calculated value, and an automatic operation control part D which causes the vehicle to operate automatically on the basis of the determined target required torque, and which performs slip suppression control that suppresses slip of the wheels when any of the wheels of the vehicle slip. In cases where slip suppression control is performed by the automatic operation control part (D), the target required torque calculating part (31) holds the feedback calculated value based on the deviation between the target acceleration and actual acceleration, and determines the target required torque from the respective calculated values of the held feedback calculated value and feed-forward calculated value.
Abstract:
In order to enhance a safety system, in particular an accident avoidance system for a means of transportation, in particular a motor vehicle, having at least one steering system and at least one brake system in such a way that an avoidance maneuver initiated by the operator of the means of transportation when approaching an obstacle is supported with respect to both the device and the method, thus preventing an accident through collision, the evaluation unit determines at least one driving variation, in particular at least one avoidance trajectory and/or at least one automatic emergency braking action from the data and information and when or after the operator of the means of transportation initiates a driving maneuver, in particular an avoidance maneuver or an emergency braking maneuver, the safety system, in particular the evaluation unit specifies, supports and/or suggests this driving maneuver in an optimized form, in particular in the form of an optimal avoidance trajectory or in the form of an automatic emergency braking.
Abstract:
A collision determination apparatus detects a current value of a lateral acceleration of a subject vehicle for calculating a collision risk index, and the collision risk index is used to determine the risk of collision of the subject vehicle with a front object. As the collision risk index takes the lateral acceleration of the subject vehicle into account, the collision risk index correctly represents a risk of collision of the subject vehicle with the front object when the subject vehicle is traveling in a condition that is under an influence of the lateral acceleration.
Abstract:
A vehicle headway maintenance assist system is configured to perform a haptic notification control of an accelerator to prompt the driver to release the accelerator when the accelerator is being operated and to perform a deceleration control of the vehicle based on headway distance when the accelerator is being operated as long as the headway distance from a preceding vehicle is less than a prescribed headway distance threshold.