摘  要

 
基于汽车主动制动侧向稳定系控制系统，使用的是汽车实际横摆角速度与驾驶员期望值的差值来判定汽车的稳态，同时引入了车辆质心侧偏角与经验值进行比较得到了另个一关于汽车转弯稳定的安全系数，希望由此改善和提高汽车在转弯过程中的操纵稳定性。
侧向稳定性控制系统判定车身状态不稳定时，可能是转向不足或者是转向过多。当转向不足时系统将制动内侧后轮，转向严重不足时，同时制动多个车轮；当出现转向过多时，系统将制动外侧车轮，从而稳定车辆，保证驾驶员和乘客的安全。
为了提高汽车侧向稳定性控制这个目标，在控制过程中使用了汽车轮速传感器、方向盘转角传感器、横摆角和G传感仪等信号源，控制部分包括制动增压电机、两个吸入电磁阀、两个隔离电磁阀、四个车轮的增压和减压电磁阀。通过相关算法，初步确定汽车稳定和各个信号之间的关系，并实现侧向稳定性的初步控制。

关键词：侧向稳定性；横摆角；转向不足；转向过多；制动；电磁阀
 

ABSTRACT

Active braking lateral stability based on cars, use of control system is car actual yaw-rate expectations and drivers to determine the difference in value of car, and introduced the steady-state traffic PianJiao and experience value centroid side got another comparison about turning a stable security coefficient car, hope this improvement and improve automobile in turning process manipulation stability.
Lateral stability control system determine body state unstable, may be understeering or move on to too much. When understeer medial rear brake system when will seriously insufficient, steering wheel, and braking when more than; When there is too much, the system will be steering wheels, and brake lateral stability vehicles, ensure the safety of drivers and passengers.
In order to improve the car lateral stability control this goal, in process control the automobile wheel speed sensors will be uesd, steering wheel Angle sensor, yaw angles and G sensing devices such as signal source, the control part includes braking pressurization motor, two inhaled solenoid valve, two separate solenoid valve, four wheels of intensification and decompression solenoid valves. Through the related algorithm, preliminarily determined each signal car stability and the relationship between the lateral stability, and realize the preliminary control.

Key words: Lateral stability; Yaw angles; Understeer; Steering overmuch; Braking; Electromagnetic valve