Electric power assisted steering system

Abstract

The invention discloses an electric power assisted steering system which comprises a torque sensor, a control motor and an electric power assisted system control unit, wherein the electric power assisted system control unit is connected with the torque sensor through signals and is inputted with an input shaft torque signal of a steering column in a direction operating system; the electric power assisted system control unit outputs a control signal to the control motor; the control motor provides assistance by the revolving speeds in forward and backward revolution; and the torque sensor of the system is arranged in a steering wheel. According to the invention, the torque sensor is arranged in the steering wheel, a steering wheel input shaft torque signal outputted by the torque sensor is connected to a spiral cable connector through two wire harnesses, and the signal is transmitted to the electric power assisted system control unit via the wire harnesses by the spiral cable, therefore, the structure of the spiral cable does not need to be changed, only a plurality of conducting wires are needed to add to the wire harnesses, and the electric power assisted steering system can be shared with other devices including an airbag and the like. The electric power assisted steering system disclosed by the invention can ensure the system reliability and also simplify the structure of the electric power assisted system and reduce the cost.

Description

technical field [0001] The invention discloses an automobile electric power steering system. By changing the structure and installation position of the torque sensor, the electric power steering system changes the structure of the entire power steering device, which solves the defects of the existing electric power steering system, such as complex structure, high processing precision requirements, and high cost, so as to reduce the weight and reduce the cost. structure and save costs. Background technique [0002] In recent years, with the continuous increase of car ownership and the complicated urban traffic conditions, the driver's steering wheel operation frequency has been increasing, which requires reducing driving fatigue and improving the portability and flexibility of manipulation. Therefore, power steering The system requirements are getting higher and higher. [0003] The power steering system has gone through three development stages: conventional hydraulic powe...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an electric power steering system for the problems of complex installation structure and high cost of components in the existing electric power steering system. The electric power steering system redesigns the structure of the torque sensor and The installation position changes the structure of the entire power steering device, so as to achieve the purpose of reducing weight, structure and cost.

Images