汽车线控转向系统双向控制结构和方法研究

来源 :2017年度中国汽车工程学会汽车转向技术分会换届年会暨学术论文年会 | 被引量 : 0次 | 上传用户:guanyinchashe
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在双向控制系统中,操作者操作主操纵机构使其运动,通信环节将控制信号传输到从操纵机构处使其跟随主操纵机构运动,实现操作者的意图;从操纵机构将环境信息传输到主操纵机构处,使操作者产生身临其境的真实感受.在线控转向(SBW)系统中,驾驶员操纵转向盘模块输出控制信号,驱动转向执行模块,使汽车按照驾驶员意图行驶;同时路面作用于转向执行模块所产生的力和位置信息也通过转向盘反馈给驾驶员,为驾驶员提供模拟路感,因此线控转向系统也属于双向控制系统,可以用双向控制思想来解决线控转向系统的两个模块间的转角和转矩耦合控制问题.本文将转矩驱动-转角反馈这一双向控制结构应用在SBW系统中并通过仿真实验验证了这一双向控制结构能够解决SBW系统两个模块间的转角和转矩耦合控制问题,实现稳定的转角跟随和转矩反馈.
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线控转向系统取消了方向盘与转向执行机构的机械连接.因此其需通过对转向执行电机及路感模拟电机的控制实现传统转向系统功能.针对以上问题,本文采用双向控制方法进行问题解