Patent classifications
B60W2520/06
Camera-based enhancement of vehicle kinematic state estimation
Methods and systems implemented in a vehicle involve obtaining a single camera image from a camera arranged on the vehicle. The image indicates a heading angle ψ.sub.0 between a vehicle heading x and a tangent line that is tangential to road curvature of a road on which the vehicle is traveling and also indicates a perpendicular distance y.sub.0 from a center of the vehicle to the tangent line. An exemplary method includes obtaining two or more inputs from two or more vehicle sensors, and estimating kinematic states of the vehicle based on applying a Kalman filter to the single camera image and the two or more inputs to solve kinematic equations. The kinematic states include roll angle and pitch angle of the vehicle.
Method And System For Integrated Path Planning And Path Tracking Control Of Autonomous Vehicle
The present disclosure relates to a method and system for integrated path planning and path tracking control of an autonomous vehicle. The method includes: obtaining five input control variables and eleven system state variables of an autonomous vehicle at current time; constructing a vehicle path planning-tracking integrated state model according to the obtained variables at the current time; enveloping external contours of two autonomous vehicles using elliptical envelope curves to determine elliptical vehicle envelope curves of the two autonomous vehicles, respectively; determining time to collision (TTC) between the vehicles according to elliptical vehicle envelope curves and vehicle driving states; establishing an objective function of a model prediction controller (MPC) according to the model; and solving the objective function based on the TTC, and determining input control variables to the MPC at the next time. Autonomous vehicle collision avoidance can be achieved according to the present disclosure.
VEHICULAR DRIVING ASSIST SYSTEM WITH UNPARKING ALERT
A vehicular driver assistance system includes a propulsion selection sensor operable to provide an output representative of a current direction of propulsion of a vehicle. The system, responsive to the output, determines an entry propulsion direction used by the vehicle to enter a parking space. The system stores the determined entry propulsion direction used by the vehicle to enter the parking space. The system, responsive to the vehicle preparing to exit the parking space, determines an exit propulsion direction of the vehicle. The system compares the stored determined entry propulsion direction used by the vehicle to enter the parking space and the exit propulsion direction of the vehicle. The system, responsive to determining that the stored determined entry propulsion direction used by the vehicle to enter the parking space is the same as the exit propulsion direction of the vehicle, provides an alert to a driver of the vehicle.
DRIVING ASSISTANCE DEVICE, MONITORING DEVICE, DRIVING ASSISTANCE METHOD, AND STORAGE MEDIUM
A driving assistance device includes a storage medium that stores computer-readable instructions, and a processor connected to the storage medium. The processor executes the computer-readable instructions to recognize an object around a moving body, perform first control for avoiding contact between the moving body and the recognized object by steering, perform second control for avoiding contact between the moving body and the recognized object by braking, derive an estimated value of a yaw rate generated in the moving body on the basis of reference information including at least a plurality of types of information different from a measured value of a yaw rate output by a yaw rate sensor mounted on the moving body, and suppress the first control if a deviation between the measured value and the estimated value is greater than a reference.
CONTROL SYSTEM FOR A VEHICLE
The present disclosure relates to a control system for selectively controlling a vehicle, ensuring high integrity of decisions taken by the control system when controlling the vehicle. The present disclosure also relates to a corresponding computer implemented method and to a computer program product.
DRIVING-ASSISTANCE CONTROL APPARATUS
The objective is to improve driving feeling at a time of acceleration operation or deceleration operation, by recognizing driver's intention of acceleration or deceleration during straight-ahead running. A driving-assistance control apparatus according to the present disclosure includes a straight-running determination unit that determines whether or not a vehicle is running straight, a head-position detection unit that detects a head position of a driver, a driving-posture determination unit that determines the posture of the driver, based on the head position detected by the head-position detection unit, and a driving-assistance control unit that performs acceleration preparation control for raising a reaction speed for acceleration operation or deceleration preparation control for raising a reaction speed for deceleration operation in accordance with an output of the driving-posture determination unit, when the straight-running determination unit determines that a vehicle is running straight.
TARGET VEHICLE DETECTION
A lateral virtual boundary for a host vehicle is identified based on a lateral distance between the host vehicle and a target vehicle, a longitudinal distance between the host vehicle and the target vehicle, and a speed of the target vehicle relative to the host vehicle. A forward virtual boundary for the host vehicle is identified based on the longitudinal distance between the host vehicle and the target vehicle. A lateral constraint value of the lateral virtual boundary and a forward constraint value of the forward virtual boundary are determined. A longitudinal acceleration and a steering angle are determined based on the lateral and forward virtual boundaries and the lateral and forward constraint values. One or both of a steering component or a brake are actuated based on the longitudinal acceleration and the steering angle.
DEVICE FOR CONTROLLING AN AUTOMATED DRIVING OPERATION OF A VEHICLE
A device for controlling an automated driving operation of a vehicle may have at least two brake systems, at least two steering systems, an engine controller, a first automated drive controller, a second automated drive controller, a surroundings sensor assembly, and inertial sensors. A third automated drive controller at least controls the vehicle into a standstill. The device is configured such that the automated driving operation is initiated and/or maintained only when the brake systems, steering systems, and at least two of the automated drive controllers are functional and such that the automated driving operation is interrupted if only one of the automated drive controllers is functional and/or if one of the brake systems and/or steering systems is not functional and/or if the engine controller is not functional, in which case the still functional automated drive controller assumes control of the vehicle and guides the vehicle into a standstill.
LANE DEPARTURE WARNING METHOD AND LANE DEPARTURE WARNING SYSTEM
The disclosure relates to a lane departure warning method and a lane departure warning system. The lane departure warning method of the disclosure includes: a warning area calculation step in which a warning area for lane departure of a vehicle is calculated based on information about the vehicle and information around the vehicle; a decision making step in which a current position of the vehicle is compared with the warning area calculated in the warning area calculation step, to determine whether the vehicle is located in the warning area and output a decision instruction; and a warning step in which a warning action is performed based on the decision instruction. According to the disclosure, a lane departure status of the vehicle can be more accurately estimated and timely warning can be performed when there is a tendency for lane departure.
SYSTEM AND METHOD FOR CONTROLLING THE GROUND SPEED OF AN AGRICULTURAL SPRAYER DURING A TURN
An agricultural sprayer includes a computing system configured to receive a first input associated with a target application rate at which agricultural fluid is to be dispensed onto the field. Moreover, the computing system is configured to receive a second input associated with a turn being made or to be made by the sprayer. Additionally, the computing system is configured to determine a maximum ground speed for the turn at which a selected nozzle dispenses the agricultural fluid onto the field at the target application rate based on the received first and second inputs. Furthermore, when the turn is being made, the computing system is configured to control an operation of the sprayer such that the ground speed of the sprayer is at or below the determined maximum ground speed.