The embodiments of the present application disclose a stability control system and a stability control method for a four-wheel drive electric vehicle and the four-wheel drive electric vehicle. In the stability control system, when the lateral acceleration is equal to or greater than an acceleration threshold, at least one of a first braking force signal, a second braking force signal, a first logic signal and a second logic signal is obtained. When the first logic signal is obtained, the body of the electric vehicle is controlled to keep stable. When the first braking force signal and the second logic signal are obtained, a motor is controlled to apply braking force to an outside front wheel. When the second braking force signal and the second logic signal are obtained, motors are controlled to apply braking force to the outside front wheel and an inside rear wheel.

A method for detecting a fault within a brake mechanism on an aircraft is disclosed. In various embodiments, the method includes activating, by a brake control unit, the brake mechanism; receiving, by the brake control unit, a wheel speed data for a wheel associated with the brake mechanism; determining, by the brake control unit, a wheel speed characteristic for the wheel associated with the brake mechanism; and detecting, by the brake control unit, whether the brake mechanism is faulty based on a comparison of the wheel speed characteristic and a wheel speed deceleration database.

A two-wheeled vehicle having a first spring device of a front wheel and a second spring device of a rear wheel, and at least one acceleration and rate-of-rotation sensor, which are situated on a vehicle frame and are operationally connected to a control device, wherein the first and the second spring devices are provided with a spring travel sensor in each case, which are operationally connected to the control device.

To suppress occurrence of a wheelie of a motorcycle. A torque control apparatus includes a the detection unit that detects a state in which the front wheel of the motorcycle is likely to be lifted up based on at least one of engine information of the motorcycle, accelerator operation information of the driver of the motorcycle, and information of the vehicle body or wheel of the motorcycle. The torque control apparatus further includes an output unit that, when the detection unit detects the state in which the front wheel is likely to be lifted up, outputs a torque smaller than a request torque of the driver as a request torque for an the engine of the motorcycle or outputs the difference between the request torque of the driver and a torque smaller than the request torque of the driver as a brake torque.

Provided are a vehicle body behavior control device which can reduce unstable behavior of a vehicle body and a method of controlling behavior of a vehicle body which can reduce unstable behavior of the vehicle body. A vehicle body behavior control device incorporated into a vehicle body having a plurality of wheels includes: a behavior control mechanism which controls behavior of the vehicle body; and a control part which controls an operation of the behavior control mechanism based on an axle load applied to the wheel calculated using a gradient value of a road surface.

Systems and methods for detecting runway conditions are disclosed. A weight on wheel system may determine that an aircraft is on the ground. Wheel speed sensors may measure the speed of the aircraft wheels. Axle reference speeds may be calculated for each landing gear based on the speed of the aircraft wheels. A weight on wheel time limit may be reached prior to the axle reference speeds reaching an on ground threshold. A brake control unit may determine that the runway is contaminated if the on ground threshold was not reached.

A control method for distribution of braking force of an autonomous vehicle may include a vertical load determination step in which a controller is configured to recognize an object existing in an interior of the vehicle and recognizes data of at least one among a position in the vehicle, a size, volume, density, weight, and center of gravity of the corresponding object, and determines a vertical load applied to each wheel of the vehicle according to the recognized data, wherein the controller transmits data of the determined vertical load of each wheel to a brake controller electrically connected to the controller, and the brake controller 40 determines an amount of the distribution of the braking force for each wheel of the vehicle according to the received data of the vertical load and drives a brake actuator electrically connected to the brake controller according to the determined amount of the distribution of the braking force.

A method for operating a deceleration system for deceleration a plurality of wheels of a vehicle, the deceleration system comprising at least one control device comprising at least one microprocessor and/or at least one microcontroller is disclosed. The method comprises determining, a total deceleration effort value to be applied by the deceleration system and a distributing the total deceleration effort value by the at least one control device, to a front deceleration effort value to be applied to front wheels of the vehicle by the deceleration system and to a rear deceleration effort value to be applied to rear wheels of the vehicle by the deceleration system. The method comprises sending, by the at least one control device, a control signal to the deceleration system, the control signal comprising the front deceleration effort value and the rear deceleration effort value.

A method for operating a brake system of a motor vehicle. The motor vehicle has a vehicle body and multiple wheels mounted relative to the vehicle body by a wheel suspension on the vehicle body. The vehicle body is capable of executing a pitching movement by the wheel suspension. The brake system has a wheel-individual wheel brake for at least some of the wheels. A pitch angle of the vehicle body is monitored, and the wheel brakes are actuated as a function of the acquired pitch angle. The pitch angle is calculated as a function of normal forces acting on the wheels.

A wheelie determining device comprises a lift-off start determiner section which determines whether or not a lift-off of a front wheel from a ground surface has started, based on a traveling state value indicating a traveling state of a vehicle and an operation value indicating a rider's driving operation.