A vehicle includes a control system, a sensing system that senses an environment of the vehicle, and a propulsion system, a braking system, and a steering system that are operated by the control system to navigate the vehicle according to the sensing system and without direct human control. The propulsion system and the braking system are operated by the control system to cooperatively decelerate the vehicle. The braking system includes an inboard friction brake that is associated with one or more wheels of the vehicle and does not form unsprung mass of the vehicle.

A braking system that uses a combination of a friction brake force and a traction motor brake force to slow or stop the rotation of the wheel. A friction brake may provide the friction brake force. A traction motor may provide the traction motor brake force. The braking system may include sensors that provide data for determining a wheel lock threshold for each wheel. The friction brake force and the traction motor brake force may be adjusted for each wheel to provide an applied brake force to the wheel that is less than or equal to the wheel lock threshold.

A force-feedback brake pedal system for cooperative braking of an electric or hybrid vehicle having jointly a regenerative braking system and a frictional braking system includes a brake pedal which is pivotally mounted around a shaft or a bearing, an electronic circuitry which is in electrical communication with the regenerative braking system and the frictional braking system of the vehicle, an actuator for providing force feedback in accordance with the regenerative breaking and friction breaking of the vehicle, the actuator is in mechanical communication with the brake pedal. The force-feedback brake pedal system further includes a compliant element arranged between the brake pedal and the actuator, and a position sensor which, during operation, measuring the deflections of the compliant element and transmitting data to the electronic circuitry.

In an electrified vehicle, a vibration damping control device performs vibration damping control for canceling or reducing, with the use of regenerative braking, a predetermined vibration component by monitoring the vibration component and controlling a generator control device depending on the vibration component. A system control device determines whether the vibration damping control is performable based on at least a charge status of a battery. An anti-lock braking system control device transmits a request signal to the system control device while performing anti-lock braking system control. The system control device transmits a command signal to the vibration damping control device when the vibration damping control is determined to be performable and the request signal is received from the anti-lock braking system control device. The vibration damping control device performs the vibration damping control when the command signal is received from the system control device.

Braking of a vehicle and a trailer can be balanced when regenerative braking of the vehicle is activated. The activation of regenerative braking of the vehicle can be detected. Responsive to detecting that regenerative braking of the vehicle is activated, one or more brakes of the trailer can be caused to be activated. Thus, the braking effectiveness of the vehicle and the braking effectiveness of the trailer can be substantially balanced. As a result, a possible push force from a trailer to the vehicle towing the trailer can be reduced, which, in turn, can help to avoid unwanted movements of the trailer (e.g., swaying or jackknifing).

The invention relates to the supplemental generation of energy from a vehicle operation, and specifically to the generation of energy in connection to a vehicle's disc brakes in combination with brushless electric motor-generators. The aim of the invention is to provide a solution making it possible to provide a generator and a disc brake having a compact structure.

A vehicle controller includes a controlling unit. The controlling unit calculates a feedback control amount based on a deviation between a target acceleration of a vehicle and an actual acceleration of the vehicle. The controlling unit executes a feedback control of a driving device and a braking device by using the feedback control amount, such that the deviation decreases. A state in which only the driving device, of the driving device and the braking device, operates is a first state. A state in which at least the braking device, of the driving device and the braking device, operates is a second state. When switched from the first state to the second state, the controlling unit calculates the feedback control amount such that the deviation permitted in the feedback control is greater than the deviation prior to a start of switching from the first state to the second state.

The present disclosure provides an electric booster comprising: a motor piston configured to be moved by a motor; an operating rod configured to be moved in a direction parallel to a moving direction of the motor piston; a reaction disc configured to be pressed and moved by at least one of the motor piston and the operating rod; a master cylinder configured to generate a hydraulic pressure as the reaction disc moves; and a control unit controlling the operation of the motor, wherein the control unit receives the stroke of the brake pedal, calculates a required hydraulic braking force and a required stepping force based on the pedal stroke, and determines a required displacement of the motor piston for generating the required hydraulic braking force and the required stepping force using a contact area between the operating rod and the reaction disc.

A braking method includes: obtaining a first state information of the vehicle, which includes a vehicle mass and a deceleration required by braking; calculating a braking torque according to the first state information, and controlling the vehicle to output an electric braking torque according to the braking torque; obtaining a current vehicle speed and a mechanical braking application delay time; calculating an electric braking exit speed according to the braking torque required by the vehicle and the deceleration required by braking; calculating a mechanical braking application speed according to the mechanical braking application delay time, the deceleration required by braking, and the electric braking exit speed; and determining whether to control the vehicle to unload the electric braking torque, and whether to control the vehicle to apply a mechanical braking torque according to the current vehicle speed, the electric braking exit speed, and the mechanical braking application speed.

The disclosure relates to a method for operating a hydraulic braking system in a motor vehicle having a regenerative braking function. The method comprises steps that, with respect to at least two wheel brakes, a hydraulic free travel release is carried out such that, with respect to one of the at least two wheel brakes, a hydraulic passage to an accumulator is released in order to store therein at least a volume fraction of the hydraulic fluid in the event of a displacement of a hydraulic fluid. The other of the at least two wheel brakes is hydraulically isolated. The disclosure also relates to a hydraulic braking system for a motor vehicle having a regenerative braking function and a method for controlling said braking system.