307的助力转向（307 power steering）.docVIP

307的助力转向（307 power steering） 307 mechanical and electronic assistance First of all, lets first look at the types and uses of power steering. The automobile steering system can be divided into two categories: mechanical steering system and power steering system according to the different energy sources. The mechanical steering system relies on the drivers steering force of the steering wheel to wheel steering; power steering system is in the drivers control, with the help of liquid pressure generated by the automobile engine or electric motor driving force to achieve the steering wheel. So the power steering system is also known as the steering power amplifier. The power steering system due to steering flexible, lightweight, increasing the selection flexibility of steering gear structure form in the design of the automobile, the advantages of absorbing the impact of the front wheel road face, so it has in the world widely used in automobile manufacturing. The application of electronic control technology in automobile power steering system makes driving performance satisfactory. The electronic controlled power steering system can make the steering portability and flexibility at low speeds; when the car in high speed area when steering, and can guarantee to provide the best dynamic magnification ratio and stability of the steering handle, thereby improving the speed of handling and stability. The electronic controlled power steering system (EPS-Electronic Control Power Steering), according to the power source can be divided into different hydraulic electronic control power steering system (hydraulic EPS) and electric power steering system (type EPS). Hydraulic EPS is in the traditional hydraulic power steering system are added on the basis of controlling the liquid flow solenoid valve, speed sensor and the electronic control unit, the speed signal of the electronic control unit according to the detected, control solenoid valve, the steering power magnification continuo