基于双闭环控制的电子液压主动制动系统控制算法

Control Algorithm of Electrohydraulic Active Braking System Based on Double Closed-loop Control

为有效解决电子液压主动制动系统既有问题,即保压时间过短,响应太慢,控制算法实用性较差等,设计了基于双闭环控制的电子液压主动制动系统控制算法。以双管路增压与预制动,可有效缩短响应时间;以距离与减速度为载体的双闭环控制,可提升控制算法实用性。通过系统控制算法测试,结果表明,最小安全距离严格控制在1-2m以内;可代替过于繁杂的主动制动管路液压压力闭环控制,简化控制复杂性,缩短响应时间,保障主动制动顺畅性与稳定性;可实现精确控制最小安全跟车距离,从而优化行车安全性与道路行车效率。

In order to effectively solve the existing problems of the electro-hydraulic active braking system,such as too short holding time,too slow response,and poor practicability of the control algorithm,the control algorithm of the electro-hydraulic active braking system based on double closed-loop control is designed.The response time can be effectively shortened by using double pipeline pressurization and prefabrication,and the practicability of control algorithm can be improved by using distance and deceleration as carrier.Through the system control algorithm test,the results show that the minimum safety distance is strictly controlled within 1-2m;it can replace the complicated closed-loop hydraulic pressure control of the active brake pipeline,simplify the control complexity,shorten the response time,and ensure the smoothness and stability of the active brake;it can realize the precise control of the minimum safety following distance,so as to optimize the driving safety and road driving efficiency.