加速度信号实时校正参考车速的ABS控制原理及特性研究  

Principle and Performance Research of ABS by Using New Method of Reference Vehicle Speed Acceleration Signal Correcting

作　　者：权龙[1] 苗建明[1] 

机构地区：[1]太原理工大学机械电子工程研究所,山西太原030024

出　　处：《液压气动与密封》2007年第1期28-32,共5页Hydraulics Pneumatics & Seals

基　　金：教育部留学回国人员科研启动基金(2001345);山西省留学回国人员基金(101015)资助课题

摘　　要：鉴于目前还没有实际可行的车速测量传感器,ABS控制中只能采用估算的参考车速计算滑移率,低速时存在制动特性差的不足,提出用车体加速度信号实时校正参考车速,实现按最佳滑移率控制的防抱死制动控制原理。在建立汽车单轮模型和液压控制系统模型的基础上,分别对假定实际车速可测、仅采用参考车速和参考车速加速度信号实时校正3种方法,防抱死制动系统的特性进行了对比研究。表明,采用新的原理,控制效果非常接近于车速可测的理想情况。研究工作对改善ABS制动效果,特别对在低速行驶的工程车辆中引入ABS具有理论和实际意义。As there are no practical suitable sensors and methods for measuring the vehicle speed don＇ t depend on the wheel speed at present, during ABS control the estimated reference vehicle speed has to be used to calculate the adhesion coefficient, that results in a disappointing braking effect at low speed, so a new principle that correct the reference vehicle speed dynamically with the actual acceleration signal of ear＇ s is put forwards to control the Anti-block Braking System based on optimal adhesion coefficient. Based on the 1/4 model of vehicle＇ s and the model of hydraulic system and the tire, under there differential conditions that suppose the vehicle speed can be measured in practice, only adopt the reference vehicle speed, adopt the reference vehicle speed and acceleration signal correcting in real time multiple, the braking performance of ABS is studied respectively and compared. The results proved that by using new principle, the braking effect will be almost the same with that the vehicle speed can be measured. The research work will be of great significance for improving the braking effect of ABS and especially for introducing the ABS into mobile vehicle with lower speed.

关 键 词：ABS 加速度 参考车速 校正 

分 类 号：TH137[机械工程—机械制造及自动化]