Where is the steering angle sensor and what is the use of the steering angle sensor

Rotation angle sensor is widely used in automobile dynamic stability control system. It is a device used to detect the rotation angle, rotation direction and steering speed of the steering wheel.The steering angle sensor is generally located on the steering column between the steering lock switch and the steering wheel, and is photoelectrically coupledYuanIt is composed of parts and perforated slot plate.

The photoelectric coupling element is a light-emitting diode and a phototransistor, and the slotted plate is placed between the light-emitting diode and the phototransistor, and there are many small holes. When the steering wheel rotates, the slotted plate will follow the rotation, and the phototransistor will act according to the light passing through the slotted plate, and will output a digital pulse signal. The car electronic control unit will use this signal to identify the steering angle and rotation of the steering wheel. Direction and steering speed.

After the steering angle sensor detects the car's steering signal, it sends the correct steering command to the car's electronic control unit to provide a basis for the car's steering range. The car's electronic control unit judges the lateral force when the car is turning based on the vehicle speed sensor signal and the steering wheel angle sensor signal. Size to control the tilt of the body, so that the car can drive in accordance with the driver's steering intention.