Abstract: A method detects unintended acceleration of a motor vehicle during a closed-loop speed control mode by determining external forces on the vehicle via a controller, and then calculating a desired acceleration using a measured vehicle speed and the external forces. The method includes determining an actual acceleration of the vehicle, including filtering a speed signal as a first actual acceleration value and/or measuring a second actual acceleration value using an inertial measurement unit (IMU). During the speed control mode, the method includes calculating an acceleration delta value as a difference between the desired acceleration and the actual acceleration, and then using the acceleration delta value to detect the unintended acceleration during the speed control mode. A powertrain system for the motor vehicle, e.g., an electric vehicle, includes the controller and one or more torque generating devices coupled to road wheels of the vehicle.

Abstract: Methods and systems are for securing a vehicle. In an exemplary embodiment, the vehicle includes a body, a drive system, a braking system, and a processor. The drive system is configured to generate movement of the body, and includes a motor. The braking system includes friction brakes that provide friction braking. The processor is disposed onboard the vehicle, coupled to the motor, and is configured to at least facilitate: determining that a loss in friction braking has occurred while the vehicle is being stopped; and providing instructions to the motor for providing propulsion torque, thereby securing the vehicle at a stop, when it is determined that the loss in friction braking has occurred; wherein the motor is further configured to execute the instructions provided by the processor for providing the propulsion torque.

Abstract: A method detects unintended acceleration of a motor vehicle during a closed-loop speed control mode by determining external forces on the vehicle via a controller, and then calculating a desired acceleration using a measured vehicle speed and the external forces. The method includes determining an actual acceleration of the vehicle, including filtering a speed signal as a first actual acceleration value and/or measuring a second actual acceleration value using an inertial measurement unit (IMU). During the speed control mode, the method includes calculating an acceleration delta value as a difference between the desired acceleration and the actual acceleration, and then using the acceleration delta value to detect the unintended acceleration during the speed control mode. A powertrain system for the motor vehicle, e.g., an electric vehicle, includes the controller and one or more torque generating devices coupled to road wheels of the vehicle.