B62D15/024

SYSTEM AND METHOD FOR CALIBRATING A STEERING WHEEL NEUTRAL POSITION
20210031831 · 2021-02-04 ·

System, methods, and other embodiments described herein relate to calibrating a steering wheel in a steering system of a vehicle. In one embodiment, the disclosed calibration system detects an object in front of the vehicle based on first data generated by one or more front sensors of the vehicle, detects the object to the rear of the vehicle based on second data generated by one or more rear sensors of the vehicle, determines a trajectory of the object based on the first data and output data from a steering wheel sensor, determines an estimate position of the object based on the trajectory, determines that the second data indicates a difference exists between the estimate position of the object and an actual position of the object, and determines a correction offset adjustment to apply to the output data from the steering wheel sensor based on the difference.

STEERING WHEEL ANGLE BIAS CORRECTION FOR AUTONOMOUS VEHICLES USING ANGLE CONTROL

A method for controlling an autonomous vehicle includes: determining whether an autonomous control mode of the autonomous vehicle is active; determining a steering wheel angle bias in response to determining that the autonomous control mode of the autonomous vehicle is active; and controlling, via a steering controller of the autonomous vehicle, an electronic power steering system of the autonomous vehicle using the steering wheel angle bias.

STEERING ASSISTANCE SYSTEM AND METHOD

A method for managing a vehicle steering system of a vehicle having a steering assist system, including estimating a steering angle amplitude during a steering maneuver before rotating the steering wheel to the steering angle amplitude value associated with the steering maneuver. Using the estimated steering angle amplitude value to control activation of the steering assist system associated with the vehicle steering system. In one example, the estimated steering angle amplitude value adapts a torque assist signal of the steering assist system.

SYSTEM AND METHOD FOR CONTROLLING THE OPERATION OF A WORK VEHICLE BASED ON A DESIRED TURNING RADIUS
20210010240 · 2021-01-14 · ·

In one aspect, a system for controlling the operation of a work vehicle may include a controller may be configured to provide for display on a user interface the turning radius of the work vehicle. The controller may also be configured to receive an input associated with an operator selection of the displayed turning radius as a desired turning radius of the work vehicle. Moreover, the controller may be configured to determine a first and second rotational speeds for first and second traction devices of the work vehicle based on the desired turning radius. In addition, the controller may be configured to control the operation of first and second motors to rotationally drive the first and second traction devices at the first and second rotational speeds, respectively, such that the work vehicle is moved along a travel path having the desired turning radius.

Calculating velocity of an autonomous vehicle using radar technology
10890919 · 2021-01-12 · ·

Examples relating to vehicle velocity calculation using radar technology are described. An example method performed by a computing system may involve, while a vehicle is moving on a road, receiving, from two or more radar sensors mounted at different locations on the vehicle, radar data representative of an environment of the vehicle. The method may involve, based on the data, detecting at least one scatterer in the environment. The method may involve making a determination of a likelihood that the at least one scatterer is stationary with respect to the vehicle. The method may involve, based on the determination being that the likelihood is at least equal to a predefined confidence threshold, calculating a velocity of the vehicle based on the data from the sensors. The calculated velocity may include an angular and linear velocity. Further, the method may involve controlling the vehicle based on the calculated velocity.

Method for differentiating driver input

A method for distinguishing intentional steering movements of a driver for influencing an intentional driving path of a motor vehicle from corrective steering movements of the driver as a reaction to unexpected deviations of the motor vehicle from the intentional driving path including ascertaining an instantaneous undisturbed motion of the vehicle along the driving path and calculating a reference value for a steering angle (SAR) corresponding to the ascertained, undisturbed motion of the motor vehicle or a reference value for a steering velocity (SVR) corresponding to the ascertained, undisturbed motion of the motor vehicle. Comparing the reference value(s) (SAR; SVR) with instantaneous steering-angle values (SA(t)) or instantaneous steering-velocity values (SV(t)) and ascertaining whether a difference between the instantaneous steering-angle value (SA(t)) and the corresponding reference steering-angle value (SAR) or a difference between the instantaneous steering-velocity value (SV(t)) and the corresponding reference steering-velocity value (SVR) exceeds a predetermined error-limit value (E) which is established for the calculation of the reference values (SVR; SAR). If so, determining it is a corrective steering movement of the driver as a reaction to an unexpected deviation of the motor vehicle from the intentional driving path.

Determining a steering angle for an automobile application

A method to operate a motor vehicle having a number of wheels is described. The method determines a steering angle for an automotive application. A steering angle is estimated using a yaw rate , a revolution rate of at least one wheel, a wheelbase L and a characteristic speed of the vehicle v.sub.ch based on a single-track model. Preferably, the steering angle is calculated using the yaw rate , the selected gear i, the wheelbase L, the speed v and the characteristic speed of the vehicle v.sub.ch according to the formula =[*i*L*(1+v.sup.2/v.sub.ch.sup.2)]/v. An application, such as adaptive light control during turns, that requires knowledge of the steering angle of the motor vehicle is carried out based on an estimated steering angle.

Surround view system for a vehicle

A surround view system for a vehicle includes a processor (10) and cameras (2 to 5) that can be arranged on the vehicle so that the cameras (2 to 5) can record images of an outside environment of the vehicle. The processor is configured to analyze a position () and/or a movement of a movable part (14) of the vehicle (1) and to generate a composite image of the outside environment from individual images recorded by the cameras. Furthermore, the processor is configured to calculate an image processing region within the composite image for an adaptive image processing, to determine, based on the analyzed position and/or movement of the movable part (14), that a back-projection of the movable part (14) goes beyond the image processing region, and to modify the image processing region so that the back-projection of the movable part (14) is within the modified image processing region.

Steering correction for steer-by-wire

A computer includes a processor and a memory storing instructions executable by the processor to determine a learned clear vision offset based on a currently calculated clear vision offset and a previously stored clear vision offset, and steer a steer-by-wire system of a vehicle while correcting a steering angle by a lesser value of the learned clear vision offset and a maximum correctable offset.

Steering assistance system and method

A method for determining a steering angle amplitude of a steering wheel of a vehicle likely to occur during a lane change, including determining a steering angle measured value of a steering wheel of a vehicle at a time of measurement during a lane change; determining a steering angular velocity measured value of the steering wheel at the time of measurement; and determining a steering angle amplitude likely to occur during the lane change at a later point in time than the time of measurement based on the at least the steering angle measured value at the steering angular velocity measured value at the time of measurement.