A control method of a braking system of at least one railway vehicle comprising a plurality of deceleration influencing devices is provided. The control method includes calculating a deceleration difference between a target deceleration and at least an estimated effective deceleration; selecting at least one influencing device depending on the deceleration difference and decision factors, including a mission factor, advantage and disadvantage factors inherent to each deceleration influencing device, field response factors indicative of the environmental conditions surrounding the at least one railway vehicle, and system state factors; and controlling the selected at least one deceleration influencing device according to the deceleration difference and at least one of the decision factors.

Acoustic medium of ultrasonic grip system consists of piezoelectric generator (1), wheel knuckle (9), ball bearing (10), wheel hub (11), wheel rim (15) and tyre of motor-car (20). The piezoelectric generator (1) creates ultrasound vibrations which are transferred through the acoustic medium to the surface of tyre (17). The ultrasound vibration on the surface of tyre (17) results in the separation of the surface of tyre (17) from the liquid (18) that may be found on tarmac (19) during the rain, which results in the fact that despite the unfavourable weather conditions the motor-car has an optimum rolling surface of tarmac. Also, the vibrations on the surface of tyre (17) in interaction with micro texture of tarmac increases the contact surface of tyre with tarmac, which results in the increase of coefficient of friction, higher grip of tyre and reduction of braking distance of motor-car. The ultrasonic grip system is activated at sudden braking, resp. activation of ABS system. Also, the system is activated on the occasion of activating the ESP and ASR system.

Acoustic medium of ultrasonic grip system consists of piezoelectric generator (1), wheel knuckle (9), ball bearing (10), wheel hub (11), wheel rim (15) and tyre of motor-car (20). The piezoelectric generator (1) creates ultrasound vibrations which are transferred through the acoustic medium to the surface of tyre (17). The ultrasound vibration on the surface of tyre (17) results in the separation of the surface of tyre (17) from the liquid (18) that may be found on tarmac (19) during the rain, which results in the fact that despite the unfavourable weather conditions the motor-car has an optimum rolling surface of tarmac. Also, the vibrations on the surface of tyre (17) in interaction with micro texture of tarmac increases the contact surface of tyre with tarmac, which results in the increase of coefficient of friction, higher grip of tyre and reduction of braking distance of motor-car. The ultrasonic grip system is activated at sudden braking, resp. activation of ABS system. Also, the system is activated on the occasion of activating the ESP and ASR system.

A method for estimating a tire property of a vehicle based on tire-to-road friction properties for a fleet of vehicles. The method includes: determining a tire-to-road friction for a plurality of vehicles, belonging to the fleet of vehicles, at a plurality of specified locations; determining a reference tire-to-road friction for the fleet of vehicles at each specified location; in a vehicle, determining a current tire-to-road friction at a first location being one of the specified locations; determining a difference between the current tire-to-road friction and the reference tire-to-road friction of the fleet for the first location; and estimating a tire property of the vehicle based on the determined difference. There is also provided a system configured to perform the described method.

A system and a method for estimating the coefficient of friction of a hydraulic brake system with axle-individual pressure buildup of a motor vehicle. In addition, a system and to a method for setting the target braking torque of a hydraulic braking system with axle-individual buildup of a motor vehicle in order to obtain a desired actual braking torque.

A system and a method for estimating the coefficient of friction of a hydraulic brake system with axle-individual pressure buildup of a motor vehicle. In addition, a system and to a method for setting the target braking torque of a hydraulic braking system with axle-individual buildup of a motor vehicle in order to obtain a desired actual braking torque.

A vehicle is disclosed for providing increased friction between the wheels of a vehicle and the ground. An example vehicle includes an anti-lock brake system, inertial sensor, and wheels. The vehicle also includes a computing system configured to deploy aggregate to an area proximate the wheels, responsive to determining that a vehicle traction value is below a first threshold. The computing system is also configured to, after deploying the aggregate, deploy a friction mat to an area proximate the wheels, responsive to determining that the vehicle traction value remains below a second threshold.

A vehicle is disclosed for providing increased friction between the wheels of a vehicle and the ground. An example vehicle includes an anti-lock brake system, inertial sensor, and wheels. The vehicle also includes a computing system configured to deploy aggregate to an area proximate the wheels, responsive to determining that a vehicle traction value is below a first threshold. The computing system is also configured to, after deploying the aggregate, deploy a friction mat to an area proximate the wheels, responsive to determining that the vehicle traction value remains below a second threshold.

A system and a method for estimating the coefficient of friction of a hydraulic brake system with axle-individual pressure buildup of a motor vehicle. In addition, a system and to a method for setting the target braking torque of a hydraulic braking system with axle-individual buildup of a motor vehicle in order to obtain a desired actual braking torque.

A system and a method for estimating the coefficient of friction of a hydraulic brake system with axle-individual pressure buildup of a motor vehicle. In addition, a system and to a method for setting the target braking torque of a hydraulic braking system with axle-individual buildup of a motor vehicle in order to obtain a desired actual braking torque.