Abstract: A number of variations may include a vehicle, system and method of modulating power steering or torque from a lane keep assist system based on driver attentiveness to avoid accidental land changes.

Abstract: A system and method of hands-off signature detection may include applying a unique sinusoidal motor command to an EPS or handwheel actuator of a vehicle and monitoring attenuation of the unique sinusoidal motor command to determine if a user's hands are on or off of a handwheel of a vehicle. Attenuation of the unique sinusoidal motor command may occur due to the physical presence of a driver's hand(s) on the steering wheel.

Abstract: A number of illustrative variations may include a method of communication between a driver and an autonomous steering system.

Abstract: A number of illustrative variations may include a method or product for monitoring and responding to component, system, or module failure in an autonomous driving system.

Abstract: In a number of illustrative variations, a method may include providing a first motion control algorithm and a second motion control algorithm, the first motion control algorithm and a second motion control algorithm being constructed and arranged to provide motion control requests. The method may further include determining if the first motion control algorithms motion control requests are within a plausible range and performing a switchover from the first motion control algorithm to the second motion control algorithm if necessary.

Abstract: In a number of illustrative variations, a method may include providing an autonomous steering system that may include a steering interface. The method may include determining at least one trajectory; providing driving steering input on the steering interface; providing haptic feedback in the form of effort augmentation in the steering interface indicating the autonomous steering systems intent to remain on the at least one trajectory; and increasing or decreasing haptic feedback in intensity as a function of the magnitude of diversion from the at least one trajectory.

Abstract: A number of illustrative variations may include a method or product for monitoring and responding to component, system, or module changes in an autonomous driving system.

Abstract: A number of illustrative variations may include a method of communication between a driver and an autonomous steering system.

Abstract: In a number of illustrative variations, an autonomous steering system may comprise a number of logic modules intended to autonomously address a number of areas of control within the realm of vehicle steering and travel including but not limited to vehicle acceleration, vehicle braking, and lateral control of the vehicle. The logic for the modules of the autonomous steering system may account for driver assistance or intervention.

Abstract: An embodiment of a system of a vehicle includes a power steering system that operates as commanded by control commands, and a control module configured to receive a first control command. The control module is also configured to generate a range signal indicative of a range of command values based on a plurality of input signals, generate a second control command based on a subset of the plurality of input signals, determine whether the first control command is out of the range for longer than a predetermined duration of time, and send the second control command to the power steering system in response to determining the first control command is out of the range for longer than the predetermined duration of time.

Abstract: An embodiment of a system of a vehicle includes a power steering system that operates as commanded by control commands, and a control module configured to receive a first control command. The control module is also configured to generate a range signal indicative of a range of command values based on a plurality of input signals, generate a second control command based on a subset of the plurality of input signals, determine whether the first control command is out of the range for longer than a predetermined duration of time, and send the second control command to the power steering system in response to determining the first control command is out of the range for longer than the predetermined duration of time.

Abstract: A method of mitigating abnormalities in a first control command for controlling a power steering system is provided. The method generates a range signal indicative of a range of command values based on a plurality of input signals. The method determines whether the first control command is out of the range for longer than a predetermined duration of time. The method limits the first control command to the range and sends the limited first control command to the power steering system in response to determining that the first control command is out of the range for shorter than or equal to the duration of time.

Abstract: A steering system providing an assist torque to a handwheel is provided, and includes a lateral position module and a torque command module. The lateral position module determines a lateral position command based on a curvature of a lane and a near field heading angle. The torque command module determines the torque assist based on the lateral position command.

Abstract: A steering system providing an assist torque to a handwheel is provided, and includes a proportional gain module and a torque command module. The proportional gain module determines a proportional gain value. The proportional gain value is scheduled as a function of a lateral position error and at least one of the following: a near field heading angle, a far field heading angle, a curvature of the lane, and a lateral position of the vehicle. The torque command module determines the torque assist based on the proportional gain value.

Abstract: A method for generating and verifying an output command for using in a power steering system is provided. The method receives, by a module having at least a primary processing path and a secondary processing path that is in parallel with the primary processing path, a set of input signals. In the primary processing path, the method generates a primary output command based on the set of input signals and sends the primary output command out of the module. In the secondary processing path, the method generates a first range of command values based on the set of input signals, determines whether the primary output command falls within the range of command values, and generates a fault signal based on determining that the primary output command does not fall within the first range of command values.

Abstract: A method of mitigating abnormalities in a first control command for controlling a power steering system is provided. The method generates a range signal indicative of a range of command values based on a plurality of input signals. The method determines whether the first control command is out of the range for longer than a predetermined duration of time. The method limits the first control command to the range and sends the limited first control command to the power steering system in response to determining that the first control command is out of the range for shorter than or equal to the duration of time.

Abstract: A method for generating and verifying an output command for using in a power steering system is provided. The method receives, by a module having at least a primary processing path and a secondary processing path that is in parallel with the primary processing path, a set of input signals. In the primary processing path, the method generates a primary output command based on the set of input signals and sends the primary output command out of the module. In the secondary processing path, the method generates a first range of command values based on the set of input signals, determines whether the primary output command falls within the range of command values, and generates a fault signal based on determining that the primary output command does not fall within the first range of command values.

Abstract: A steering system providing an assist torque to a handwheel is provided, and includes a proportional gain module and a torque command module. The proportional gain module determines a proportional gain value. The proportional gain value is scheduled as a function of a lateral position error and at least one of the following: a near field heading angle, a far field heading angle, a curvature of the lane, and a lateral position of the vehicle. The torque command module determines the torque assist based on the proportional gain value.

Abstract: A steering system providing an assist torque to a handwheel is provided, and includes a lateral position module and a torque command module. The lateral position module determines a lateral position command based on a curvature of a lane and a near field heading angle. The torque command module determines the torque assist based on the lateral position command.

Abstract: Systems and methods for determining an absolute position of a motor of an active front steering system of the vehicle are provided. In particular, the systems and methods accurately determine an absolute position of the motor upon startup of the active front steering system.