A method of adjusting test braking pulses during stability control of a vehicle (10) including the steps of: applying a first test braking pulse to at least one wheel of the vehicle (10), the application of the test braking pulse comprising operating a brake actuator (112) to apply a low level braking pressure of the wheel, determining a first longitudinal acceleration (A.sub.Long1) of the vehicle (10) during the test braking pulse, obtaining a second longitudinal acceleration (A.sub.Long2) indicative of the longitudinal acceleration of the vehicle (10) when a test braking pulse is not being applied, calculating a change in longitudinal acceleration during the test braking pulse, and determining whether the change in longitudinal acceleration is acceptable, and if not, adjusting the level of the braking pressure applied in a subsequent test braking pulse.

An overrunable test vehicle including an electronically-controlled anti-slip braking system for reducing wheel slip during rapid deceleration comprising: a chassis, at least one electric motor connected to a first axle, a hydraulic braking system connected with the chassis and at least a second axle, a rotational speed sensor for determining a rotational speed of a connected axle, a ground speed sensor, and a controller connected with the electric motor, the hydraulic braking system, the rotational speed sensor, and the ground speed sensor. The controller is configured to calculate a difference between the rotational speed of the axle and the ground speed of the chassis to determine a slip threshold of the wheels, actuate the hydraulic brake system to apply a first stopping force, control at least one motor parameter of the electric motor to apply a second stopping force. The first and second stopping forces combined are less than the slip threshold of the wheels such that the chassis rapidly decelerates free of a wheel slip condition.

Described are devices, systems and methods for managing a supplemental brake control system in autonomous vehicles. In some aspects, a supplemental brake management system includes brake control hardware and software that operates with a sensing mechanism for determining the brake operational status and a control mechanism for activating the supplemental brake control in an autonomous vehicle, which can be implemented in addition to the vehicle's primary brake control system.

A method includes estimating, as a function of an angular speed of wheels of an axle of a vehicle, a value of adhesion of a contact area of the wheels of said axle to a route, and calculating a value of slip of the wheels of said axle. The method also includes generating signals representative of a derivative of said adhesion as a function of the slip of the wheels of said axle, and calculating an error signal as a difference between a value of said derivative and a predetermined reference value. The method includes generating, via an adaptive filter that implements a Least Mean Square (LMS) algorithm, a driving signal based on said derivative. The LMS algorithm is continuously adapted based on the error signal to reduce and keep the error signal substantially at zero. The method includes applying said driving signal to a torque control module.

A vehicular driving assist system includes a plurality of cameras and a plurality of sensors disposed at a vehicle. The plurality of sensors includes at least one selected from the group consisting of a plurality of radar sensors and a plurality of lidar sensors. Electronic circuitry of an electronic control unit includes an image processor for processing image data captured by the cameras and a processor for processing sensor data captured by the sensors. The system, while the vehicle is travelling in a forward direction and responsive to processing of image data captured by the cameras and sensor data captured by the sensors, is operable to determine presence of an object approaching a path of travel of the vehicle. The system, responsive to determining presence of the object approaching the path of travel of the vehicle, communicates an alert to a driver of the vehicle.

A method is for operating a brake system of a motor vehicle. The brake system includes at least one service brake and a transmission device having an output rod, by way of which a braking force is transmitted to the at least one service brake. The brake system further includes at least one parking brake having a trigger device for activating the at least one parking brake. The method provides increased safety and simplified implementation by (i) using an adjustment travel of the output rod to ascertain a deceleration acting on the motor vehicle due to the at least one service brake, and (ii) activating the at least one parking brake, when the trigger device is actuated, when the motor vehicle is ascertained as being stationary, taking into consideration the deceleration.

A method for controlling an activation state of a braking-torque assistance system for reducing intake of braking energy in a service-brake system of a vehicle includes capturing and evaluating a plurality of demand indications for a startup of the braking-torque assistance system. If the evaluation of the captured plurality of demand indications reveals a demand for the startup of the braking-torque assistance system, a plurality of operating conditions of the service-brake system are captures and evaluated over a monitoring period. If, in turn, the evaluation of the captured plurality of operating conditions reveals that an overheating of the service-brake system is imminent, the braking-torque assistance system is actuated and one or more deactivation conditions of the braking-torque assistance system are checked. If the deactivation conditions are satisfied, the braking-torque assistance system is deactivated.

A method for operating a motor vehicle having a braking device for braking the motor vehicle, including the steps: forecasting an anticipated time period until a reduction in speed or braking of the motor vehicle, triggered by a driver assistance system or by the driver of the motor vehicle, depending on vehicle data relating to the motor vehicle and/or environmental data relating to the motor vehicle environment, and triggering a respective function of the braking device when a triggering condition assigned to the respective function is satisfied, wherein a respective triggering condition is satisfied or can be satisfied only when the anticipated time period falls below the limiting time value assigned to the respective function, wherein at least two of the functions are assigned limiting time values that differ from each other.

A brake system comprises a hydraulic braking device configured to generate a hydraulic braking force; and a regenerative braking device configured to generate a regenerative braking force by an electric motor; wherein the hydraulic braking device comprises a master cylinder configured to generate a hydraulic pressure corresponding to a displacement amount of a brake pedal by discharging a brake oil; a plurality of valves disposed in a flow path connecting a plurality of wheel cylinders and the master cylinder; an accumulator disposed in the flow path; and an electronic control unit (ECU) configured to control the plurality of valves so that the brake oil discharged from the master cylinder is stored in the accumulator, and to transmit a request signal for generating the regenerative braking force to the regenerative braking device.

A system and method for managing braking in a degraded adhesion condition for a vehicle system including at least one vehicle comprising setting a target deceleration value, applying a non-degraded braking force via a braking system of the vehicle system, detecting a presence of a degraded adhesion condition between the vehicle system and a route along which the vehicle system moves. Responsive to the degraded adhesion condition not being detected, maintaining the application of the non-degraded braking force, or responsive to the degraded adhesion condition being detected, applying a degraded braking force, activating recovery means to control deceleration of the vehicle system, determining a compensation deceleration value, and applying at least one of the braking system or recovery means to control the deceleration of the vehicle system.