Automotive four-wheel steering is an advanced steering system that allows the vehicle to steer in the same direction at high speeds and reverse steering at low speeds. The principle of implementation of this steering system can be summarized as follows:
1.Adjustment of the direction of travel of the vehicle.
At high speeds, stability is required, so the four-wheel steering system allows all wheels to steer in the same direction. This can increase the straight-line driving stability of the vehicle and improve the handling performance of the vehicle. At low speeds, however, the vehicle needs to be nimble, so four-wheel steering allows the front wheels to steer in the same direction and the rear wheels to steer in the opposite direction. This allows the vehicle to steer quickly in a small space and improve the vehicle's mobility.
2.Control of lateral forces of vehicles.
The four-wheel steering system enables precise control of the vehicle's lateral forces through the control of the steering angle and steering speed of the four wheels. At high speeds, through the precise control of the wheels, the roll and swing of the vehicle can be reduced, and the stability of the vehicle can be improved. And at low speeds, precise control of the wheels can make the vehicle smoother when turning quickly and reduce lateral impact.
3.Control of vehicle slew rate.
The four-wheel steering system can also achieve precise control of the vehicle's yaw rate by controlling the steering angle and steering speed of the four wheels. When driving at high speeds, through the precise control of the wheels, the vehicle can maintain a stable driving state and reduce the difficulty of the driver's operation. And at low speeds, precise control of the wheels can make the vehicle more agile when turning quickly and improve the driver's reaction speed.
To sum up, the automotive four-wheel steering system is a comprehensive application of a variety of technologies to achieve precise control of the vehicle's driving direction, lateral force and yaw rate. The application of this steering system can not only improve the handling performance and stability of the vehicle, but also make the vehicle more flexible, safe and convenient.