摘要:
A method and system for operating an autonomous vehicle. The method includes determining, at an electronic processor, a limit for a forward velocity setpoint of the autonomous vehicle based a range of a forward facing sensor and detecting whether a preceding vehicle is in a field of view of the forward facing sensor. The method includes determining a speed of the preceding vehicle, and when the preceding vehicle is in the field of view of the autonomous vehicle, adjusting the limit based on the speed of the preceding vehicle.
摘要:
Methods and systems for controlling a host vehicle to mitigate rear-end collisions. One method includes automatically maintaining the host vehicle at least a predetermined following distance from a front vehicle traveling ahead of the host vehicle. The method also includes detecting a rear vehicle traveling behind the host vehicle and determining when the rear vehicle poses a rear-end collision risk with the host vehicle. In addition, the method includes automatically, by a controller, increasing a speed of the host vehicle when the rear vehicle poses a rear-end collision risk with the host vehicle, and automatically reducing the predetermined following distance to decrease a distance between the host vehicle and the front vehicle and increase a distance between the host vehicle and the rear vehicle when the rear vehicle poses a rear-end collision risk with the host vehicle.
摘要:
Methods and systems for disabling a fuel shut-off state of a vehicle. One method includes counting, by a controller, a number of transitions of an engine included in the vehicle between a fuel shut-off state and a fuel state, determining, by the controller, whether the number exceeds a predetermined threshold, and issuing a disable command, by the controller, to the engine included in the vehicle. The disable command causes the engine to exit a current fuel shut-off state. Another system includes a controller configured to determine whether acceleration is requested while an engine included in the vehicle is in a fuel shut-off state. When acceleration is requested while the vehicle is in a fuel shut-off state, the controller is configured to issue a disable command to the engine prior to issuing an acceleration command. The disable command causes the engine to exit the fuel shut-off state.
摘要:
A method and system for identifying an object as a potential collision hazard for a vehicle. The system performs a method that includes sensing an object in a forward direction of travel of the vehicle with a sensor and determining a location of the vehicle. The method includes estimating an amount of curvature of a road segment associated with the location based on predetermined map data and generating, via an electronic processor, a reaction area based on the amount of curvature of the road segment. The method also includes identifying the object as a potential collision hazard when the object is located within the reaction area.
摘要:
A method and system for monitoring an area underneath an autonomous vehicle. The method includes capturing a first topography of a ground surface underneath the autonomous vehicle with a sensor when the autonomous vehicle is stationary; storing the topography of the ground surface in a memory prior to the autonomous vehicle being switched off; capturing a second topography of the ground surface underneath the autonomous vehicle with the sensor before the autonomous vehicle begins moving; and comparing, with an electronic processor, the first topography with the second topography. The method includes enabling autonomous driving of the autonomous vehicle when the first topography of the ground surface underneath the autonomous vehicle and the second topography of the ground surface underneath the autonomous vehicle match.
摘要:
A method and system for monitoring an area underneath an autonomous vehicle. The method includes capturing a first topography of a ground surface underneath the autonomous vehicle with a sensor when the autonomous vehicle is stationary; storing the topography of the ground surface in a memory prior to the autonomous vehicle being switched off; capturing a second topography of the ground surface underneath the autonomous vehicle with the sensor before the autonomous vehicle begins moving; and comparing, with an electronic processor, the first topography with the second topography. The method includes enabling autonomous driving of the autonomous vehicle when the first topography of the ground surface underneath the autonomous vehicle and the second topography of the ground surface underneath the autonomous vehicle match.
摘要:
A system is provided for supporting lane assist functions for a vehicle towing a trailer. The system includes performing lane departure warning and lane centering assist functions that operate differently when the presence of a trailer is detected. The system warns the driver if either the vehicle or trailer will depart the lane, using different warnings for the vehicle and trailer. The system further provides lane centering assist functions that operate to center the vehicle and trailer together. Corresponding methods are also provided.
摘要:
A driver assistance system senses and provides an indication of an approaching vehicle located sidewardly and rearwardly within an immediately adjacent driving lane to a host vehicle. The system includes left and right rear sensor units proximate rear corners of the host vehicle. The rear sensor units sense vehicles on respective sides and rearwardly of the host vehicle. When either rear sensor unit detects an approaching vehicle within the adjacent lane on the opposite side of the host vehicle therefrom, the rear sensor unit provides an opposite-lane warning signal to the other rear sensor unit. The system includes providing host vehicle driving path information to the rear sensor units for determining the path of the adjacent lanes adjacent to and rearward of the host vehicle. The path information accounts for curves in a roadway. Further, the rear sensor units detect the speed of a closing vehicle. When a left rear sensor unit senses a closing vehicle in the immediately adjacent left lane or obtains an opposite-lane warning signal from a right rear sensor unit, the left rear sensor unit provides a warning signal to an alarm unit for a vehicle approaching in the left lane. When the right rear sensor unit senses a closing vehicle in the immediately adjacent right lane, or receives an opposite-lane warning signal from the left rear sensor unit, the right rear sensor unit provides a warning signal to the alarm unit.
摘要:
A method for managing tracklets in a particle filter estimation framework includes executing a tracklet prediction dependent on a list of previous tracklets, thereby determining persistent tracklets and new tracklets; sampling new measurements for initializing the new tracklets, thereby determining an amount of estimated new tracklets; and determining an amount of the persistent tracklets dependent on the list of previous tracklets. The method further includes determining an amount of the new tracklets and an amount of updated persistent tracklets to be sampled dependent on the amount of estimated new tracklets, the amount of the persistent tracklets, and a memory bound; sampling the updated persistent tracklets from a list of the persistent tracklets dependent on the determined amount of the updated persistent tracklets; and sampling the new tracklets from unassociated measurements dependent on the determined amount of the new tracklets.
摘要:
In one embodiment, the invention provides a method for controlling a vehicle brake system while the vehicle is in reverse. The method includes prefilling the brake system upon detecting an object in the vehicle's path. If the vehicle continues to move toward the detected object and a first threshold is reached, light braking is applied. If the vehicle continues to move toward the detected object and a second threshold is reached, heavier braking up to full braking is applied to prevent the vehicle from colliding with the object.