Abstract: A method for controlling motion by a heavy-duty vehicle is provided. The vehicle is controlled based on a target longitudinal wheel slip of at least one driven wheel on the vehicle. The method includes monitoring a signed acceleration of the vehicle, monitoring a signed current longitudinal wheel slip of the at least one driven wheel, and, if the monitored acceleration and the current longitudinal wheel slip has the same sign, reducing a magnitude of the target longitudinal wheel slip of the at least one driven wheel in case a magnitude of the monitored acceleration of the vehicle decreases while the magnitude of the monitored current longitudinal wheel slip is non-decreasing, and controlling wheel slip of the at least one driven wheel based on the target longitudinal wheel slip.

Abstract: A method for controlling a powertrain system of a heavy-duty vehicle, the powertrain system having at least one differential arrangement for receiving torque from a propulsion unit of the powertrain system and delivering at least a part of the torque to a set of first and second wheels, the method being implemented by a control unit, the method comprising determining a split-friction condition indicative of a wheel slip difference between the first and second wheels, wherein one of the first and second wheels defines a high-friction side of the differential arrangement and the other one of the first and second wheels defines a low-friction side of the differential arrangement; determining a target wheel slip for the high-friction side; and in response to the determined split-friction condition; controlling a brake force on the low-friction side of the differential arrangement based on the target wheel slip on the high-friction side.

Abstract: A method for controlling motion by a heavy-duty vehicle, where the vehicle is arranged to be controlled based on a target longitudinal wheel slip of at least one driven wheel on the vehicle. The method includes: monitoring an acceleration of the vehicle; monitoring a current longitudinal wheel slip of the at least one driven wheel; reducing the target longitudinal wheel slip of the at least one driven wheel in case the monitored acceleration of the vehicle decreases while the monitored current longitudinal wheel slip is non-decreasing; and controlling wheel slip of the at least one driven wheel based on the target longitudinal wheel slip.

Abstract: A method for controlling propulsion of a heavy-duty vehicle, where the heavy-duty vehicle comprises a differential drive arrangement arranged in connection to a drive axle with a left wheel and a right wheel is provided. The method includes determining a nominal shaft slip corresponding to a desired wheel force to be generated by the drive axle wheels, wherein the nominal shaft slip is indicative of a difference between a current vehicle velocity and a vehicle velocity corresponding to the shaft speed, determining a difference between a speed of the left wheel and a speed of the right wheel, adjusting the nominal shaft slip in dependence of a magnitude of the wheel speed difference to a target shaft slip, and controlling the shaft speed based on the target shaft slip.

Abstract: A method for controlling motion by a heavy-duty vehicle is provided. The vehicle is controlled based on a target longitudinal wheel slip of at least one driven wheel on the vehicle. The method includes monitoring a signed acceleration of the vehicle, monitoring a signed current longitudinal wheel slip of the at least one driven wheel, and, if the monitored acceleration and the current longitudinal wheel slip has the same sign, reducing a magnitude of the target longitudinal wheel slip of the at least one driven wheel in case a magnitude of the monitored acceleration of the vehicle decreases while the magnitude of the monitored current longitudinal wheel slip is non-decreasing, and controlling wheel slip of the at least one driven wheel based on the target longitudinal wheel slip.

Abstract: A method for controlling motion by a heavy-duty vehicle, where the vehicle is arranged to be controlled based on a target longitudinal wheel slip of at least one driven wheel on the vehicle. The method includes: monitoring an acceleration of the vehicle; monitoring a current longitudinal wheel slip of the at least one driven wheel; reducing the target longitudinal wheel slip of the at least one driven wheel in case the monitored acceleration of the vehicle decreases while the monitored current longitudinal wheel slip is non-decreasing; and controlling wheel slip of the at least one driven wheel based on the target longitudinal wheel slip.

Abstract: A method for controlling propulsion of a heavy-duty vehicle, where the heavy-duty vehicle comprises a differential drive arrangement arranged in connection to a drive axle with a left wheel and a right wheel is provided. The method includes determining a nominal shaft slip corresponding to a desired wheel force to be generated by the drive axle wheels, wherein the nominal shaft slip is indicative of a difference between a current vehicle velocity and a vehicle velocity corresponding to the shaft speed, determining a difference between a speed of the left wheel and a speed of the right wheel, adjusting the nominal shaft slip in dependence of a magnitude of the wheel speed difference to a target shaft slip, and controlling the shaft speed based on the target shaft slip.

Abstract: A computer system comprising a processor device configured to control an acceleration of a vehicle is provided. The vehicle comprises a set of auxiliary brakes. The processor device obtains an acceleration condition of the vehicle. The acceleration condition being indicative of any one out of: an acceleration of the vehicle, the absolute value of which is below a predetermined acceleration limit value; a predefined positive acceleration of the vehicle, and a predefined negative acceleration of the vehicle. The processor device is further configured to, in response to determining that the vehicle can be controlled in accordance with the obtained acceleration condition using the set of auxiliary brakes, control the set of auxiliary brakes in accordance with the obtained acceleration condition of the vehicle.

Abstract: Methods for controlling a transmission of a vehicle are provided. Such methods include establishing a desired speed profile for the vehicle when travelling along a road segment, performing a plurality of simulations, each of a vehicle response, in the road segment, to a respective gear control action, wherein the gear control action differs from one simulation to another, wherein the simulations include an aim to keep the speed on the speed profile, or within one or more established limits of deviations from the speed profile, determining costs for the simulated vehicle responses, selecting, in dependence on the determined costs, one of the gear control actions, controlling the transmission with the selected gear control action.

Abstract: A method for controlling a powertrain system of a heavy-duty vehicle, the powertrain system having at least one differential arrangement for receiving torque from a propulsion unit of the powertrain system and delivering at least a part of the torque to a set of first and second wheels, the method being implemented by a control unit, the method comprising determining a split-friction condition indicative of a wheel slip difference between the first and second wheels, wherein one of the first and second wheels defines a high-friction side of the differential arrangement and the other one of the first and second wheels defines a low-friction side of the differential arrangement; determining a target wheel slip for the high-friction side; and in response to the determined split-friction condition; controlling a brake force on the low-friction side of the differential arrangement based on the target wheel slip on the high-friction side.

Abstract: Methods for controlling a transmission of a vehicle are provided. Such methods include establishing a desired speed profile for the vehicle when travelling along a road segment. performing a plurality of simulations, each of a vehicle response, in the road segment, to a respective gear control action, wherein the gear control action differs from one simulation to another, wherein the simulations include an aim to keep the speed on the speed profile, or within one or more established limits of deviations from the speed profile, determining costs for the simulated vehicle responses, selecting, in dependence on the determined costs, one of the gear control actions, controlling the transmission with the selected gear control action.