The present invention provides a vehicle control apparatus, a vehicle control method, and a vehicle control system capable of optimizing balance between a target tire lateral force and a target tire longitudinal force. A vehicle control apparatus outputs an instruction for achieving an optimal slip ratio corresponding to a minimum value of a sum of a first difference and a second difference to an actuator regarding braking/driving of a vehicle. The first difference is a difference between a tire lateral force and a target tire lateral force with respect to an arbitrary slip ratio in a correlative relationship between a slip ratio and the tire lateral force of a tire of a wheel portion. The second difference is a difference between a tire longitudinal force and a target tire longitudinal force with respect to the arbitrary slip ratio in a correlative relationship between the slip ratio and the tire longitudinal force.

The disclosure relates to a method for monitoring behavior of a tire of a vehicle in a rolling condition of the tire, comprising the steps of: acquiring a signal representative of an acceleration of a specified point of the tire, deriving from the signal a curve which represents a profile of the acceleration of the point during a revolution of the tire, determining a leading portion and a trailing portion of the curve, corresponding to an entry of the point into a footprint region of the tire and corresponding to an exit of the point from the footprint region of the tire, respectively, determining a first measure of a volatility of the signal in the leading portion and a second measure of a volatility of the signal in the trailing portion, and determining an indication of the behavior of the tire based on the first measure and the second measure.

A brake control system and method are arranged to control a brake for preventing slip and ensuring driving force of an outer wheel by adjusting a braking amount of an inner wheel during vehicle turning. The method includes steps of: receiving, by an electronic stability control (ESC) device, a function activation request; determining, by the ESC device, whether execution conditions for brake control of a turning inner wheel of a vehicle are satisfied in response to the function activation request, and when the execution conditions are satisfied, controlling braking pressure by determining and adjusting a braking pressure control amount of an inner wheel during vehicle turning based on a preset factor.

A device valuates the deformation of a tire casing, the device including: a tire casing having a rotation axis, including a crown and having a radial stiffness; when said tire casing is included in a mounted assembly, the footprint of the tire casing has a dimension L.sub.adc in the axial direction; and an electronic device comprising one bending sensor, characterized in that the bending sensor includes an active part having a main dimension of between 10% and 80% of the dimension L.sub.adc, in that the active part of the sensor is located in line with the crown, in that the main dimension of the active part is oriented in the circumferential direction of the tire casing and in that the bending sensor has a bending stiffness that is lower than the radial stiffness of the tire casing.

The invention relates to a device for evaluating the deformation of a tyre casing which includes: a tyre casing having a rotation axis, including a crown and having a radial stiffness; when said tyre casing is included in a mounted assembly, the footprint of the tyre casing has a dimension L.sub.adc in the axial direction; an electronic device comprising one bending sensor;
characterized in that the bending sensor includes an active part having a main dimension of between 10% and 80% of the dimension L.sub.adc, in that the active part of the sensor is located in line with the crown, in that the main dimension of the active part is oriented in the circumferential direction of the tyre casing and in that the bending sensor has a bending stiffness that is lower than the radial stiffness of the tyre casing.

A method includes observing one or more rear tires for a front car, the one or more rear tires include a left rear tire and a right rear tire, determining whether the one or more of the rear tires have an anomaly, observing a chassis of the front car to determine if there is an inclination, and sending an alert if the one or more rear tires have the anomaly.

The disclosure relates to a method for monitoring behavior of a tire of a vehicle in a rolling condition of the tire, comprising the steps of: acquiring a signal representative of an acceleration of a specified point of the tire, deriving from the signal a curve which represents a profile of the acceleration of the point during a revolution of the tire, determining a leading portion and a trailing portion of the curve, corresponding to an entry of the point into a footprint region of the tire and corresponding to an exit of the point from the footprint region of the tire, respectively, determining a first measure of a volatility of the signal in the leading portion and a second measure of a volatility of the signal in the trailing portion, and determining an indication of the behavior of the tire based on the first measure and the second measure.

A system for detecting aircraft brake failure using retract braking may comprise a landing gear including a wheel, a brake coupled to the wheel, and a wheel sensor coupled to the wheel. A brake controller may be coupled to the brake and the wheel sensor. The brake controller may be configured to receive a begin retract braking signal, command the brake to apply a braking force to the wheel, calculate a wheel speed characteristic using data from the wheel sensor, and determine whether the wheel speed characteristic indicates a failure of the brake.

The present invention provides a vehicle control apparatus, a vehicle control method, and a vehicle control system capable of optimizing balance between a target tire lateral force and a target tire longitudinal force. A vehicle control apparatus outputs an instruction for achieving an optimal slip ratio corresponding to a minimum value of a sum of a first difference and a second difference to an actuator regarding braking/driving of a vehicle. The first difference is a difference between a tire lateral force and a target tire lateral force with respect to an arbitrary slip ratio in a correlative relationship between a slip ratio and the tire lateral force of a tire of a wheel portion. The second difference is a difference between a tire longitudinal force and a target tire longitudinal force with respect to the arbitrary slip ratio in a correlative relationship between the slip ratio and the tire longitudinal force.

A method includes observing one or more rear tires for a front car, the one or more rear tires include a left rear tire and a right rear tire, determining whether the one or more of the rear tires have an anomaly, observing a chassis of the front car to determine if there is an inclination, and sending an alert if the one or more rear tires have the anomaly.