摘要
针对在干扰状态下汽车多级液压助力困难,难以快速实现转向的问题,研究一种新的汽车多级液压助力转向技术。利用传感器采集汽车液压装置开关信号,优化初始姿态,分析通电状态与压力程度,判断汽车液压助力系统是否存在异常故障,提取信号特征进行误差模糊控制,计算汽车机械控制转速变化参数,得到液压助力器电压信号变化矩阵;通过迭代运算实现助力转向,根据液压助力产生摆动位移的矢量变化方程,实现汽车多级液压助力转向特性分析。计算转向运动时液压助力转向机械臂总力,根据机械运动角速度与加速度实现助力转向。实验结果表明:该技术在干扰状态下,转向角在300°以上时,灵敏度极高,具有较强的抗干扰能力。
To deal with the difficulty in achieving the multi-stage hydraulic assistance and quick steering for vehicles under interference conditions,a new multi-stage hydraulic power steering technology for automobiles was studied under initial pose optimization control.Sensors were applied to collect the switch signals of the automotive hydraulic device,the initial attitude was optimized,the power on state and pressure level were analyzed,abnormal faults in the automotive hydraulic power system were determined,signal features were extracted for error fuzzy control,the mechanical control speed change parameters of the car were calculated,and the voltage signal change matrix of the hydraulic power booster were abtained.Through iterative operation,the power steering was realized,and the characteristics of multi-stage hydraulic power steering for automobiles were analyzed on the vector variation equation of swing displacement generated by hydraulic power assistance.The total force of the hydraulic power assisted steering robotic arm was calculated in steering motion,and the power assisted steering was achieved based on the angular velocity and acceleration of the mechanical motion.The experimental results show that the proposed technology,with the steering angle above 300°under interference conditions,has extremely high sensitivity and strong antinp-interference ability.
作者
马文倩
MA Wenqian(School of Automotive Engineering,Xi'an Aviation Vocational and Technical College,Xi'an 710089,China)
出处
《机械制造与自动化》
2025年第4期284-288,共5页
Machine Building & Automation
基金
西安航空职业技术学院学校科研基金重点项目(KJTD23-01)。
关键词
初始位姿
优化控制
汽车转向
液压助力
转向技术
initial posture
optimization control
automotive steering
hydraulic assistance
steering technology
