Patent classifications
B60W2510/22
Controlling movement of a vehicle
Apparatus (101) for controlling movement of a vehicle (100), a system (201) and vehicle 5 (100) comprising the apparatus (101), and a method (500, 600) for controlling the movement of a vehicle (100) are disclosed. The apparatus (101) comprises a controller (10) configured to receive first signals from a receiving means (202) in dependence on received transmitted signals from a remote control device (200) indicating a requested motion of a vehicle and to receive second signals indicative of a value of traction of the vehicle. A maximum speed 10 value for the vehicle is determined in dependence on the value of traction of the vehicle and/or on one or both of the detected pitch and roll angles of the vehicle (100). The controller (10) provides an output signal for controlling speed of the vehicle (100) based on the requested motion. The output signal is limited dependent upon the maximum speed value determined by the controller (10).
VEHICLE JUMP DETECTION AND CONTROL SYSTEM
A vehicle jump detection method and system for a vehicle includes an electronic control module (ECM), at least one ride height sensor (RHS) in signal communication with the ECM and configured to measure a vertical wheel travel distance from a predetermined point on the vehicle, at least one accelerometer in signal communication with the ECM and configured to measure a vertical acceleration of the vehicle frame, and a vehicle speed sensor in signal communication with the ECM. The ECM is configured to independently determine, based on one or more signals from the at least one RHS, the at least one accelerometer, and the vehicle speed sensor, if (i) wheels of a front axle are in the air, (ii) wheels of a rear axle are in the air, and (iii) if the wheels of both the front and rear axles are in the air.
VEHICLE MOTION STATE ESTIMATION DEVICE, VEHICLE MOTION STATE ESTIMATION METHOD, AND VEHICLE
An object of the present invention is to provide a vehicle motion state estimation device and method that can estimate the vertical motion state amount with high accuracy by taking into consideration vertical force in which the frictional force acting in the front-rear direction or lateral direction of the wheel acts on the vehicle body due to the geometry of suspension. A vehicle motion state estimation device in a vehicle in which a wheel and a vehicle body are coupled via a suspension, the vehicle motion state estimation device including: a vertical motion-caused wheel speed component estimation unit that estimates a wheel speed component caused by vertical motion of the vehicle; a vertical force estimation unit that calculates vertical force in which frictional force of the wheel caused by motion of the vehicle acts on the vehicle body by geometry of the suspension; and a vertical motion estimation unit that estimates a state amount of vertical motion of a vehicle, in which the vertical motion estimation unit estimates a state amount of vertical motion of the vehicle based on a wheel speed component from the vertical motion-caused wheel speed component estimation unit and vertical force acting on the vehicle body from the vertical force estimation unit.
Center-of-mass height estimation device
A center-of-mass height estimation device includes a roll moment calculation unit for calculating roll moment of a sprung portion in a vehicle on the basis of bearing capacities of left and right suspensions provided on the vehicle, a lateral acceleration measurement unit for measuring lateral acceleration, which is acceleration in a width direction of the vehicle, a mass measurement unit for measuring mass of the sprung portion, a transfer function calculation unit for calculating a transfer function of the roll moment with respect to the lateral acceleration, and a center-of-mass height calculation unit for dividing the gain of the transfer function by the mass of the sprung portion to calculate a height from a roll center of the vehicle to a center of mass of the sprung portion.
ROAD QUALITY BASED ROUTING
Aspects of the disclosed technology provide solutions for performing vehicle routing based on road quality data. In some approaches, a process of the technology can include steps for collecting road quality data using at least one vehicle-mounted sensor, identifying two or more routes to a destination location, receiving historical road quality data associated with the two or more routes to the destination location, and calculating a damage projection associated with each of the two or more routes to the destination location, wherein the damage projection is based on the historical road quality data for at least one of the two or more routes to the destination location.
Torque distribution method for vehicle
In a torque distribution method for a vehicle, torque is optimally distributed to front and rear wheels of a vehicle by reflecting pitch motion characteristics and longitudinal load movement information of the vehicle in real time. The repetition of wheel slip and the degradation of wheel slip control performance caused by the pitch motion are reduced. The longitudinal load movement of the vehicle is reduced.
Controlling movement of a vehicle
Apparatus for controlling movement of a vehicle, a system and vehicle comprising the apparatus, and a method for controlling the movement of a vehicle are disclosed. The apparatus comprises a controller configured to receive first signals from a receiving means in dependence on received transmitted signals from a remote control device indicating a requested motion of a vehicle and to receive second signals indicative of a value of traction of the vehicle. A maximum speed value for the vehicle is determined in dependence on the value of traction of the vehicle and/or on one or both of the detected pitch and roll angles of the vehicle. The controller provides an output signal for controlling speed of the vehicle based on the requested motion. The output signal is limited dependent upon the maximum speed value determined by the controller.
Determining vehicle ride height using a ball joint sensor
Techniques for using ball joint sensor data to determine conditions relevant to a vehicle are described in this disclosure. For example, in one example, the ball joint sensor data may be used to determine a ride height at a portion of the vehicle, which may be used to determine roll data and/or pitch data. The ride height, roll data, and/or pitch data may be directly used to navigate through an environment, such as by the vehicle relying on the data when interpreting sensor data or planning driving operations. Also, the ride height, roll data, and/or pitch data may be used to verify the reliability of other sensor data used to navigate through the environment.
METHOD FOR ASCERTAINING VEHICLE CHARACTERISTIC VARIABLES
A method for determining vehicle characteristic variables of a motor vehicle. The motor vehicle has active dampers which can set adjusting forces at the respective wheel suspensions in order to be able to raise and/or lower the body of the motor vehicle and which can also measure the acting forces. Specific predefined adjusting forces of the active dampers are imparted in order to ascertain vehicle characteristic variables from the resulting adjustment and the resulting measured forces.
ADJUST OPERATIONAL PARAMETERS BASED ON IDENTIFIED ROADWAY IRREGULARITIES
Methods and systems are provided for improving vehicle speed measurements. A vehicle may detect the impact of a roadway irregularity to its front wheels and its rear wheels, and may calculate an instantaneous vehicle speed on the basis of its wheelbase and an elapsed time between the two impacts. This instantaneous vehicle speed may then be used to calculate one or more correction factors which may be used to correct a conventionally-acquired vehicle speed measurement, an operational parameter of the vehicle underlying such measurements (such as a wheel size or a final drive ratio), or both.