During the braking process, the car is mainly affected by the force exerted by the ground on the car, the resistance of the wind and its own gravity. The force of the ground on the car is divided into: the support force acting on the wheel perpendicular to the ground and the force acting on the wheel parallel to the ground. As shown in Figure 2-1, the car is driving in a straight line and is subjected to lateral external disturbance forces and the force that the car exerts on the ground when turning. Among them, Fx is the ground braking force that the ground acts on each wheel, and its size depends on the longitudinal adhesion coefficient of the road surface and the load on the wheels. The sum of the ground braking forces on all wheels is used as the total ground braking force from the ground to the car.The main force of speed and stop. Fy is the sideslip friction force acting on each wheel on the ground. The size of the sideslip friction force depends on the lateral adhesion coefficient and the load on the wheels. When the wheels are locked, the sideslip friction force will become very small. Almost zero. When the car brakes in a straight line, if it is subjected to lateral interference forces, such as lateral wind or uneven roads, the car will produce side-slip friction to maintain the car's straight-line driving direction.
During the braking process, the car is mainly affected by the force exerted by the ground on the car, the resistance of the wind and its own gravity. The force of the ground on the car is divided into: the support force acting on the wheel perpendicular to the ground and the force acting on the wheel parallel to the ground. As shown in Figure 2-1, the car is driving in a straight line and is subjected to lateral external disturbance forces and the force that the car exerts on the ground when turning. Among them, Fx is the ground braking force that the ground acts on each wheel, and its size depends on the longitudinal adhesion coefficient of the road surface and the load on the wheels. The sum of the ground braking forces on all wheels is used as the total ground braking force from the ground to the car.<br>The main force of speed and stop. Fy is the sideslip friction force acting on each wheel on the ground. The size of the sideslip friction force depends on the lateral adhesion coefficient and the load on the wheels. When the wheels are locked, the sideslip friction force will become very small. Almost zero. When the car brakes in a straight line, if it is subjected to lateral interference forces, such as lateral wind or uneven roads, the car will produce side-slip friction to maintain the car's straight-line driving direction.
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