【摘要】 电动助力转向(EPS)系统的传感器故障将严重危害汽车的可靠性与安全性,研究EPS系统的容错控制技术具有重要的应用价值。在分析传感器故障容错控制概念的基础上,提出了利用调整观测器增益阵参数的方法并确定了传感器重要度的计算公式。通过建立EPS系统动力学模型的状态方程,设计了一种对任意k个传感器失效的分析表。提出的方法能较方便地确定EPS系统的传感器数量配置。更多还原

【Abstract】 The sensor failure of electric power-steering(EPS) system damages vehicle reliability and safety seriously.The research of fault-tolerance control technology of EPS has important application value.Based on description concept of functional redundancy of fault-tolerance for sensor failures,a method of adjusting the parameters of observer gain matrix was proposed and a formula of computing the degree of importance for the sensor was established.By forming the dynamic state space model of EPS system,a analysis table was built for the random K number sensors functional failure on the sense of observability. By analyzing that table and computing the degree of sensor importance,the configuration of the quantity of the needed sensors for EPS system can be more easily decided than by existing method.更多还原