Intelligent automobile redundant steer-by-wire device and control method thereof

Abstract

The invention discloses an intelligent automobile redundant steer-by-wire device and a control method thereof. The intelligent automobile redundant steer-by-wire device comprises a steering wheel, a steering column, a road sensing motor, an electromagnetic clutch, a redundant motor, a gear rack steering gear, a power-assisted motor and a control unit, and the steering wheel is assembled at the topend of the steering column; and the road sensing motor, the electromagnetic clutch, the redundant motor and the gear rack steering gear are sequentially assembled on the steering column. The controlmethod comprises the steps that the steering device starts to work only when it is detected that a vehicle is started, and the steering device comprises two working modes and corresponding control methods, namely the driving auxiliary mode control method and the the automatic driving mode control method. The intelligent automobile redundant steer-by-wire device and a control method thereof have the advantages that redundant backup of the sensor, the motor, the control unit and the power source is achieved, and the service life can be prolonged. When slave ECU monitors that master ECU fails, the control right is taken over immediately, other structures are not needed, and seamless switching of the control right is easy to realize.

Description

technical field [0001] The invention relates to a steering device and a control method thereof, in particular to a redundant wire-control steering device and a control method thereof for an intelligent automobile. Background technique [0002] At present, the steering by wire (Steering by wire, SBW) system is regarded as the development of the steering system in the future unmanned driving scenario because of its good handling stability, collision safety, and the decoupling of the driver's operation and vehicle motion. inevitable trend. The application of electronic components such as sensors, controllers and motors in the steer-by-wire system not only brings excellent system performance, but also reduces the overall reliability of the steer-by-wire system. Once one or some electronic components Failure will bring safety hazards and even cause safety accidents, which is also an important reason for limiting the industrialization of steer-by-wire systems. [0003] A very im...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a redundant steering-by-wire device for smart cars and its control method in order to solve many problems existing in the existing redundant steering-by-wire device

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