An automatic torque control system and methods for automatically controlling a torque of a vehicle are disclosed. The method includes detecting when the vehicle engages a load. The method further includes automatically decreasing the torque when the vehicle engages the load and prior to one or more wheels of the vehicle slipping.

A traction control system for a trailing vehicle includes an electric machine, a ground engaging apparatus in contact with a ground surface, and a disconnect device connected between the electric machine and the ground engaging apparatus. The traction control system includes one or more speed sensors to determine a differential speed of the disconnect device. The traction control system includes a controller determines when to disengage the disconnect device based in part upon the speed of the ground engaging apparatus exceeding an upper threshold.

A vehicle control system has a plurality of subsystem controllers including an engine management system 28, a transmission controller 30, a steering controller 48, a brakes controller 62 and a suspension controller 82. These subsystem controllers are each operable in a plurality of subsystem modes, and are all connected to a vehicle mode controller 98 which controls the modes of operation of each of the subsystem controllers so as to provide a number of driving modes for the vehicle. Each of the modes corresponds to a particular driving condition or set of driving conditions, and in each mode each of the functions is set to the function in mode most appropriate to those conditions.

A method for controlling wheel slip of a vehicle includes obtaining operation state information of a driving system, determining the speed of a backlash component between a drive apparatus and a drive wheel of the vehicle based on the obtained operation state information of the driving system, determining a reference speed for controlling wheel slip, determining a control input value for controlling the wheel slip based on a driving system speed, the speed of the backlash component, and the reference speed, using the control input value to determine whether wheel slip occurs, determining a torque correction amount based on the control input value when it is determined that wheel slip has occurred, and correcting a torque command of the drive apparatus according to the torque correction amount.

A method for controlling wheel slip of a vehicle includes obtaining operation state information of a driving system, determining the speed of a backlash component between a drive apparatus and a drive wheel of the vehicle based on the obtained operation state information of the driving system, determining a reference speed for controlling wheel slip, determining a control input value for controlling the wheel slip based on a driving system speed, the speed of the backlash component, and the reference speed, using the control input value to determine whether wheel slip occurs, determining a torque correction amount based on the control input value when it is determined that wheel slip has occurred, and correcting a torque command of the drive apparatus according to the torque correction amount.

A computer implemented method for controlling at least one driven and/or braked wheel of a heavy-duty vehicle. The method includes obtaining a motion request indicative of a desired longitudinal acceleration and/or longitudinal force associated with the vehicle, and configuring a wheel slip limit value indicative of a maximum allowable wheel slip by the at least one driven and/or braked wheel at a nominal value, and increasing the wheel slip limit value from the nominal value to a boost wheel slip value in response to detecting a boost signal, as well as controlling the at least one driven and/or braked wheel in dependence of the motion request and subject to the wheel slip limit value.

A control system for controlling electrical power consumption from energy storage means by a traction motor of a vehicle caused by a wheel slip event includes: one or more electronic controllers configured to: receive a torque request for the traction motor; determine a current known prevailing speed value of the traction motor; determine a maximum allowable increase in speed of the traction motor of to occur during a latency period associated with the prevailing speed value of the current known speed of the traction motor; determine an electrical power consumption limit in dependence on the torque request, the current known prevailing speed value of the traction motor of the vehicle and the maximum allowable increase in speed of the traction motor; and control torque provision of the traction motor in dependence on the torque request and the electrical power consumption limit.

A vehicle includes a system and method of modeling and controlling a traction of a wheel of the vehicle. The system includes an observer, a predictive controller and an online solver. The observer receives a dynamic model parameter of the wheel and determines an estimate of a wheel velocity and an uncertainty in the wheel velocity using a non-linear model of the wheel. The predictive controller determines an average gain and differential gain from the estimate of the wheel velocity and the uncertainty in the wheel velocity. The online solver calculates a motor torque and a wheel brake torque for increasing the traction of the wheel with a road based on the average gain and the differential gain. The motor torque and the wheel brake torque are applied at the vehicle.

The disclosure is directed to a method for slip control of a vehicle wheel driven via an electric drive. The method including at least the following steps: driving the electric drive of the vehicle wheel using an actual drive torque in a torque control in a torque control step, determining a wheel speed and a wheel slip of the vehicle wheel and evaluating the wheel slip by way of an instability criterion as to whether an instability exists, upon recognizing an instability, direct or indirect transition in a slip control of the wheel slip to a setpoint slip by driving the electric drive, determining whether an end criterion for ending the slip control is satisfied; and, if the end criterion is satisfied, returning to the torque control in the torque control step.

A method for controlling wheel slip of a vehicle includes: observing and estimating equivalent inertia information of a driving system in real time based on operation information of the driving system by receiving the operation information of the driving system for driving the vehicle; calculating the compensated amount for compensating a torque command of a driving device from the equivalent inertia information of the driving system observed and estimated by a controller; compensating the torque command of the driving device by using the calculated compensated amount; and performing a control of a torque applied to a driving wheel according to the compensated torque command.