A method for haptic feedback on a brake pedal of a motor vehicle. A current stability index describing the current driving situation is compared to a stored critical stability index. A haptic feedback is imprinted on the brake pedal of the motor vehicle when the ratio between the current stability index and the critical stability index exceeds a previously defined limit value.

Various antilock braking systems, devices, and methods using sensorized brake pads are disclosed. In some embodiments, the present disclosure provides a method for improving the performance of an antilock braking (ABS) and anti-slip regulation (ASR) system of a vehicle. The method can include detecting the actual value of the coefficient of friction (e.g., between a tire and the ground), updating the coefficient of friction during braking using the braking torque data derived from at least one braking pad of each wheel, and adjusting brake force. For example, the brake force can be adjusted as a function of and/or to be approximately equal to the value of the actual tire-road friction during braking.

An emergency braking monitoring system includes a wheel assembly having a first wheel, an emergency braking monitoring unit coupled to the wheel assembly, and a locked wheel annunciation center coupled to the emergency braking monitoring unit for annunciation purposes. The emergency braking monitoring unit generates a fault annunciation signal based on a determination as to whether a first wheel speed value originating from the first wheel of the wheel assembly is a predetermined amount less than a reference value for a persistence time.

A method for determining a coefficient-of-friction, the method including braking a first wheel of a vehicle such that a slip between the first wheel and a roadway is less than a slip between a second wheel of the vehicle and the roadway, and determining a coefficient-of-friction between the first wheel and the roadway based on the behavior of the first wheel during the braking. The method optionally including hazard braking the vehicle.

A method for determining a coefficient-of-friction, the method including braking a first wheel of a vehicle such that a slip between the first wheel and a roadway is less than a slip between a second wheel of the vehicle and the roadway, and determining a coefficient-of-friction between the first wheel and the roadway based on the behavior of the first wheel during the braking. The method optionally including hazard braking the vehicle.

A system and method of applying a coast regeneration torque of a vehicle are provided. The method corrects a magnitude of slip (or a slip ratio) which is considered when a coast regeneration torque is to be variably controlled while the vehicle is coasting.

A system and method of applying a coast regeneration torque of a vehicle are provided. The method corrects a magnitude of slip (or a slip ratio) which is considered when a coast regeneration torque is to be variably controlled while the vehicle is coasting.

The disclosure relates to a method for adapting a control strategy of a slip-control system of a brake system of a vehicle in a -split situation, in which different wheel-specific brake pressures, are set at opposite wheels of a vehicle axle. The resulting brake pressure difference is limited. In some examples, to generate a brake pressure request, a maximum pressure difference value deviating from a reference pressure difference with a predefined tolerance value is determined on a wheel-specific basis for the wheels lying opposite one another. The reference pressure difference corresponds to the value of the current low-pass-filtered brake pressure difference, and the brake pressure request for each wheel is determined as a minimum of the wheel-specific brake pressure determined from the control strategy of the slip-control system, and from the sum of the average brake pressure of the wheel lying opposite and the wheel-specific maximum pressure difference value.

The disclosure relates to a method for adapting a control strategy of a slip-control system of a brake system of a vehicle in a -split situation, in which different wheel-specific brake pressures, are set at opposite wheels of a vehicle axle. The resulting brake pressure difference is limited. In some examples, to generate a brake pressure request, a maximum pressure difference value deviating from a reference pressure difference with a predefined tolerance value is determined on a wheel-specific basis for the wheels lying opposite one another. The reference pressure difference corresponds to the value of the current low-pass-filtered brake pressure difference, and the brake pressure request for each wheel is determined as a minimum of the wheel-specific brake pressure determined from the control strategy of the slip-control system, and from the sum of the average brake pressure of the wheel lying opposite and the wheel-specific maximum pressure difference value.

A tire-mounted sensor is mounted to a rear surface of a tread of a tire. the tire-mounted sensor includes: a vibration detector, a signal processor, a transmitter, and an activation controller. The vibration detector outputs a detection signal according to amplitude of a vibration of the tire. The signal processor extracts a ground contact section during which the portion of the tread provided with the vibration sensor is in contact with the ground, from the detection signal, and generates a road surface data based on the detection signal during the ground contact section. The transmitter transmits the road surface data. The activation controller starts an activation of the signal processor at a time in association with the ground contact starting time at which the portion of the tread provided with the vibration detector begins to be in contact with the ground.