With the development of society and the improvement of living standards, people have higher requirements for heavy trucks. While increasing vehicle load and driving speed, driving safety has attracted much attention from car owners.
The electric power steering system is a key technology widely used in heavy trucks, which can provide drivers with accurate, stable, and safe steering support. AEAUTO analyzes and discusses the key technologies of the electric power steering system for heavy trucks.
The role and characteristics of the electric power steering system The AEAUTO heavy truck electric power steering system integrates mechanical, electronic, hydraulic, and control technologies. Its main function is to provide steering assistance to the driver, reduce driving difficulty and labor intensity, and improve driving accuracy and stability. Compared with traditional mechanical steering systems, electric power steering systems have the following characteristics.
Convenient assistance: The driver only needs slight force and angle adjustment for steering operation, without too much endurance and energy, and the assistance is outstanding under long-term driving and high-intensity working conditions.
Accurate and stable: The electric power steering system achieves more accurate steering control through high-speed operation of motors and controllers, and quickly responds and adjusts to changes in vehicle steering feedback.
Energy saving and environmental protection: The electric power steering system can control the motor to avoid energy waste and loss, reduce energy consumption and CO₂ emissions, and improve vehicle fuel economy and environmental performance.
Analysis of key technologies of the AEAUTO EPS system
8000Nm high torque output.
Through a dual-winding motor, high-precision ball screw, and flat secondary enveloping toroidal worm reduction mechanism, as well as a 24V high power density motor and patented reduction mechanism, the 8000Nm high torque output required for heavy-duty commercial vehicles is achieved.
High-reliability redundant design.
Using a functional safety-based redundant architecture with dual-winding motors, dual MCUs, and dual control chips for heavy-duty commercial vehicles ensures high reliability and safety of the steering system, meeting the urgent needs of the electric steering system as a functional safety component.
The angle control response time does not exceed 50ms.
Based on the in-loop dynamic tracking and feedback control strategy of the power assist value, it adopts a low-inertia permanent magnet synchronous motor, determines the control mode through different sensor signals, and uses the control algorithm to accurately track the target parameters to achieve rapid response of EPS power assist, which is at the international leading level.
Future prospects of AEAUTO EPS system
AEAUTO electric power steering system will strengthen the integration with vehicle autonomous driving technology, promote the application of information technology, intelligent technology and environmental protection technology, and make it more accurate, intelligent, green and humane. It has been widely used in heavy trucks. With the development of technological innovation, the system still has room for improvement in stability, intelligence and environmental protection performance.
In the future, AEAUTO electric power steering system will surely bring more stable, reliable driving experience and safety guarantee to drivers and passengers of heavy trucks.