Abstract: A vehicle includes a gear selector that selects between a drive and reverse gear. The gear selected defines an intended travel direction. The vehicle also includes a controller that, responsive to user input, activates a one-pedal drive system, and responsive to detecting the vehicle is rolling back for more than a predefined time period, a feedforward road grade compensation torque being opposite to the intended travel direction and having a magnitude greater than a feedforward threshold, and a feedback data noise compensation torque in the intended travel direction having a magnitude greater than a feedback threshold, reduces the maximum magnitude of the feedforward road grade compensation torque to a predefined value throughout a current key cycle for the vehicle.

Abstract: A controller, responsive to accelerator pedal release and a speed of the vehicle being less than a threshold, operates an electric machine to provide braking torque according to a predetermined speed versus time profile that defines a predetermined duration for the speed to become zero and a target speed for each time instant during the predetermined duration such that, for a given one of the time instants, the electric machine increases the braking torque responsive to the speed being greater than the target speed and decreases the braking torque responsive to the speed being less than the target speed.

Abstract: A vehicle includes a gear selector that selects between a drive and reverse gear. The gear selected defines an intended travel direction. The vehicle also includes a controller that, responsive to user input, activates a one-pedal drive system, and responsive to detecting the vehicle is rolling back for more than a predefined time period, a feedforward road grade compensation torque being opposite to the intended travel direction and having a magnitude greater than a feedforward threshold, and a feedback data noise compensation torque in the intended travel direction having a magnitude greater than a feedback threshold, reduces the maximum magnitude of the feedforward road grade compensation torque to a predefined value throughout a current key cycle for the vehicle.

Abstract: A vehicle includes a powertrain and a controller. The controller, responsive to a parameter indicative of a grade on which the vehicle is travelling having a value greater than a threshold, and a given accelerator pedal input, commands the powertrain to produce an amount of drive torque for the vehicle that is based on the value.

Abstract: A vehicle includes a powertrain having an electric machine configured to power driven wheels and friction brakes. A vehicle controller is programmed to, with the vehicle being in a one-pedal driving mode and the friction brakes automatically engaged to hold the vehicle stationary, release the friction brakes absent input from a brake pedal in response to an estimated torque of the driven wheels exceeding a grade-compensation torque threshold that is based on road grade to launch the vehicle without rollback.

Abstract: A vehicle includes a controller programmed to generate a command to an electric machine to reduce a torque output rate after an accelerator pedal is tipped out based upon a vehicle speed value and a wheel acceleration torque value. The torque output rate is initially reduced at a first rate, and is then reduced at a second rate slower than the first rate when the wheel acceleration torque value is greater than 0 Nm.

Abstract: A vehicle comprising, an accelerator pedal, a brake pedal, an electric machine, and a controller. The electric machine is configured to propel the vehicle and to brake the vehicle via regenerative braking. The controller is programmed to, in response to releasing the accelerator pedal, increase a regenerative braking torque of the electric machine to a first value. The controller is further programmed to, in response to depressing the brake pedal, increase the regenerative braking torque of the electric machine from the first value to a second value. The controller is further programmed to, in response to a speed of the vehicle decreasing to less than a first threshold, decrease the regenerative braking torque of the electric machine from the second value to the first value.

Abstract: A speed sensorless controller for an induction motor with rotor resistance estimation, using stator currents and voltages. The rotor resistance and speed estimation are obtained as a solution of a linear algebraic system with pseudo current and voltage signals and their observable derivatives as inputs. The proposed scheme provides accurate, real-time estimation of the speed and rotor time constants in all motor operational modes. It can also be used for real-time motor tuning if a speed signal is available.