电液控制全轮转向系统  

All-wheel Steering System with Electro-hydraulic Controlling

作　　者：郑凯锋[1] 冯占宗[1] 陈宇[1] 陈柄言 

机构地区：[1]中国北方车辆研究所,北京100072

出　　处：《液压与气动》2016年第8期89-94,共6页Chinese Hydraulics & Pneumatics

摘　　要：多轴车辆在后桥增设电控液压转向系统,可实现整车的全轮转向,对整车性能有较大提升。但由此也引出几个问题:一是车辆变成全轮转向后,原车的前桥转向机构是否需要重新设计;二是当后桥车轮不需要转向或者当电控液压转向系统失效时,如何保证后桥车轮处于直行位置且一直保持在直行位置;三是全轮转向具有多种转向模式,模式之间如何平稳的进行切换。这些问题的合理解决决定着全轮转向系统的性能。以四轴车辆为研究对象,从机械、液压、电控三方面就提出的三个问题进行着重分析。Adding an electro-hydraulic power steering system to the rear axles of tradition multi-axils vehicle can make it become an all-wheel steering vehicle and enhance the steering performance d. However, the additional sys- tem causes some problems. The first is whether the front axles steering mechanism need to be redesigned to meet Ackerman steering. The second is how to keep rear wheels in straight line when these do not need to steer or the EPS （ electrical power steering） is failure. The third is how to ensure mode switching smoothly if the controller has multi-steering-modes. An effective solution of those problems will determine vehicle＇s performance. So, in this pa- per, those problems have been analyzed mainly from mechanical, hydraulic and electronic controlling based on four axles vehicle.

关 键 词：全轮转向 电控液压 对中锁死 模式切换 

分 类 号：TH137[机械工程—机械制造及自动化]