The present disclosure provides a method of estimating a weight of a vehicle, including determining whether a current state is an enable state in which a vehicle stoppage event due to brake occurs from vehicle driving information, by a weight estimating system, when the current state is the enable state, removing noise by filtering an acceleration signal input from an acceleration sensor at a moment when the vehicle is stopped, by the weight estimating system, determining a period value of an acceleration signal from the acceleration signal from which noise is removed, by the weight estimating system, and estimating the weight of the vehicle using information on the determined period value, by the weight estimating system.

A method of evaluating a driving skill executed by a computer includes a skill evaluation step of evaluating a driver's driving skill based on a detection value of a vehicle state, a component separating step of separating the detection value of the vehicle state into a driver's operation component reflecting a driver's motion and a non-driver's operation component without reflecting the driver's motion, and a skill evaluation modifying step of correcting or abandoning evaluation of the driving skill based on at least one of an amount of the driver's operation component and an amount of the non-driver's operation component.

A driver state detection device that accurately detects a state of a driver, such as fatigue and nodding off. A driver state detection device includes an acceleration sensor installed in a vehicle, a center-of-gravity movement amount detection unit that is attached to a component constituting the vehicle and detects a center-of-gravity movement amount of a body of a driver on the vehicle, and a driver state determination unit that determines a state of the driver based on magnitude of an amount of deviation between an acceleration of the vehicle obtained by the acceleration sensor and the center-of-gravity movement amount of the body of the driver detected by the center-of-gravity movement amount detection unit.

A vehicle exterior environment recognition apparatus includes a travel path derivation unit, a speed derivation unit, and a follow-up controller. The travel path derivation unit estimates an own-vehicle travel path and derives a target-vehicle travel path that contains a point on a target vehicle and forms a parallel curve to the own-vehicle travel path. The speed derivation unit derives a target-vehicle speed vector. The follow-up controller makes a follow-up control based on the target-vehicle speed vector on the condition that an angle formed by the target-vehicle speed vector and a tangential line to the target-vehicle travel path at the point on the target vehicle falls within a predetermined angular range, and makes the follow-up control based on a tangential speed component of the target-vehicle speed vector on the condition that the angle falls out of the angular range.

A method of controlling driving force of a vehicle, includes providing a first filter for removing or reducing a natural frequency component of the vehicle suspension pitch motion, and a second filter for extracting or increasing the natural frequency component of the vehicle suspension pitch motion to a controller of the vehicle, determining a required driving force command based on vehicle driving information collected during driving of the vehicle, determining a driving force command after filter application through a processing process by the first filter taking the determined required driving force command as input thereof, determining a driving force correction amount through a processing process by the second filter taking feedback driving force as input thereof, and correcting the driving force command after filter application using the driving force correction amount and controlling driving force applied to a driving wheel of the vehicle by a driving device of the vehicle using the driving force command after the correction.

A control device for a vehicle includes a sensor unit detecting wheel acceleration based on a wheel speed of a wheel of the vehicle; a filter unit generating a wheel acceleration graph using the wheel acceleration detected by the sensor unit; a storage unit updating and storing a reference point of the wheel acceleration on the wheel acceleration graph; a slope calculation unit calculating a slope of the wheel acceleration based on the reference point on the wheel acceleration graph; and a determination unit determining whether a jerk occurred in the vehicle using a change amount of the reference point and the slope of the wheel acceleration.

Methods and system are provided for generating regenerative braking torque at a front axle and a rear axle of a vehicle. In one example, the regenerative braking torque may be a function of a normal load applied to the front axle and a normal load applied to the rear axle.

A lane assignment system includes a digital-map, a ranging-sensor, and one or more controller-circuits. The digital-map indicates a position of a host-vehicle traveling in a travel-lane on a roadway. The ranging sensor detects a lateral-distance to an other-vehicle traveling on the roadway proximate the host-vehicle. The one or more controller-circuits are in communication with the digital-map and the ranging-sensor. The one or more controller-circuits determine a lateral-variation of the lateral-distance, determine whether the lateral-variation is greater than a dynamic-threshold, determine whether a second-lane exists beyond a first-lane based on the digital-map, determine that the other-vehicle is traveling in the first-lane, and operate the host-vehicle in accordance with the other-vehicle traveling in the first-lane.

A method of controlling autonomous driving is provided. The method includes collecting driving information of a driver and curvature information of a road and generating a driving pattern of the driver, defined by associating behaviors in longitudinal and lateral directions of the vehicle based on the driving information. The driving pattern is then set to a constraint condition for driving torque and brake pressure and the vehicle is operated based thereon.

A controller executes a method to manage an engine connect/disconnect decision in a powertrain having an engine, transmission, electric machine, and a battery pack and power inverter module (TPIM). In response to vehicle ground speed being less than a calibrated maximum electric vehicle accelerator pedal signal (EV.sub.APS) level, the controller calculates a delta APS (PS) value by subtracting a scaled APS value from the actual APS level. The scaled APS value is a scaled variant of a maximum EV.sub.APS value selected from a maximum EVS.sub.APS table, the latter populated based on inverter temperature, state of charge of the battery pack, and ground speed. When the APS value exceeds a threshold, the controller connects the engine to the transmission via an engine disconnect clutch. The engine is disconnected based on acceleration of the vehicle and the above-noted factors.