The electric power steering has more advantages than the traditional hydraulic power steering. The development of electric power steering is a promising trend. The power assist of the EPS depends on the size of the motor, the current, and the gear ratio of the speed reduction mechanism. ZHAOWEI’s EPS steering gear box can meet the performance requirement with higher stability and reliability, satisfying the automotive industry.
EPS is the abbreviation of Electric Power Steering. Thanks to the power steering gearboxes, the electric power steering system becomes the development direction of the automobile steering system. It is mainly composed of a torque sensor, a vehicle speed sensor, a motor, a speed reduction mechanism, and an electronic control unit (ECU). The system provides steering assist directly from the motor, with no need to mount the power steering oil pumps, hoses, hydraulic oil, conveyor belts and pulleys on the engine, saving energy and protecting the environment. In addition, it has the characteristics of simple adjustment, flexible assembly and ideal steering assistance in a variety of situations. The car electric steering can greatly reduce the difficulty in adjusting the steering wheel, improve the stability of the operation, and greatly save the space. It is a comfortable configuration.
When the driver performs steering on the steering wheel, the torque sensor detects the steering of the steering wheel and the magnitude of the torque and transmits the voltage signal to the ECU. The electronic control unit issues instructions to the motor control according to the torque voltage signal, direction of rotation and speed signal detected by the torque sensor, making the electric motor output steering assist torque of a corresponding magnitude and direction, thereby generating auxiliary power. If the car doesn’t perform steering, the ECU won’t issue an instruction to the motor controller and the motor won’t work. This process is smart and efficient based on the electrical power steering gear motor.
Electric Power Steering Assist Solutions from ZHAOWEI
The assisting force of the EPS depends on the size of the motor, the current, and the gear ratio of the speed reduction mechanism from ZHAOWEI.
The motor used in the EPS system is a DC servo motor. It has a wide speed range, large overload and torque, high reliability, small energy loss and low noise. It is also easy to adjust smoothly and control flexibly. The automotive power steering gear boxes together with motor provided by ZHAOWEI happens to meet such features. Meanwhile, the gear ratio of the speed reduction mechanism affects the assist force of the EPS. For higher quality and better performance, ZHAOWEI has analyzed the key technical auxiliary characteristics of the EPS. According to the mathematical model and the auxiliary characteristics, ZHAOWEI Motor proposes an automobile gear motor especially for EPS, also called EPS steering gear box.
* The electrical power steering gear motor for EPS mentioned above is only shown as a case that is developed for specific customers. It can be customized according to requirements.
Electrical power steering gearbox
Electrical power steering gear motor
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