Research on Sensor Fault-Tolerant Control Based on Riccati Equation for Electric Power Steering
In order to ensure the safe and reliable operation of electric power steering(eps) system,the fault-tolerant control theory is used to design the feedback control for eps system and the control rule for sensor failure in the linear continuous system is described.On the basis of riccati equation,the design method and steps of fault-tolerant controller are given from the view of optimal control.By taking electric power steering of a certain mini car as research object,the simulation calculation is carried out.By applying such fault-tolerant controller for the eps system,the simulation results show that the system has no sensitiveness to the sensor faults,and the method can satisfy the demand of fault-tolerant control.
Long Chen, Yongkang Zhang, Aixing Feng, Zhenying Xu, Boquan Li and Han Shen
D. C. Wang et al., "Research on Sensor Fault-Tolerant Control Based on Riccati Equation for Electric Power Steering", Key Engineering Materials, Vol. 464, pp. 86-89, 2011