Dual-Redundancy Steering by Wire Control System with High Safety

Steering by wire control system cannot be applied to mass production cars because of the low safety. A structure of dual-redundancy steering by wire control system with high safety and redundancy management method are proposed in this paper. By applying the redundancy theory to the design of steering by wire control system and combining the redundancy management method, when any single random electrical fault occurs, no system failure can be achieved. The whole system has a working mode of “fault-safe-forewarning,” thus the safety of steering by wire control system is enhanced, increasing the possibility of applying the system to mass production cars.