基于Riccati方程的汽车线控转向传感器故障重构研究  

Research on the Sensor Fault Rebuilding Based on Riccati-type Equation for Steer-by-wire System

作　　者：田承伟[1] 宗长富[1] 王祥[1] 张萍 

机构地区：[1]吉林大学汽车动态模拟国家重点实验室,长春130022 [2]一汽-大众汽车有限公司,长春130011

出　　处：《中国机械工程》2009年第21期2637-2641,共5页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(50475009;50775096);国家863高技术研究发展计划资助项目(2006AA110102)

摘　　要：针对取消方向盘与转向器之间的机械连接后,线控转向系统存在的安全性和可靠性问题,提出以软件解析冗余为基础的线控转向系统传感器故障重构方法。以现有的线控转向系统为基础,从最优控制角度出发,基于Riccati型方程构建了线控转向系统主要传感器的最优软件解析故障重构方法,并进行了传感器故障重构的硬件在环仿真。仿真结果表明,该方法能够实现传感器信号的重构,可以满足线控转向系统的容错控制要求。Since the safety and reliability problem of SBW system after canceling the mechanical connection between steering wheel and steering gear,a sensor fault rebuilding method for SBW system was proposed based on software analysis redundancy. On the basis of existing SBW system, from the view of optimal control,a optimal software analysis fault rebuilding method for SBW key sensor system was put forward based on Riccati--type equation. The sensor fault rebuilding hardware in the loop simulation was carried out, and the results show that the method can achieve the fault rebuilding of the sensors＇ signals,and can satisfy the fault tolerant control desire of the SBW system.

关 键 词：汽车 线控转向系统 传感器 故障重构 RICCATI方程 

分 类 号：U463.4[机械工程—车辆工程]