Electric power steering, in which an electric motor provides assistance in steering effort, has the problem that the driver's feel can be made worse by the inertia and friction of the motor.To solve this problem, the use of a small motor with large output is necessary. Either by increasing the supply voltage or by the use of rare-earth -metal magnets, EPS offering sufficient assistance for stationary vehicles and satisfactory driver's feel could be developped for vehicles up to 1.5 liter.For 0.55 liter vehicles with relatively small steering effort, it was designed for the motor to provide assistance during low-speed driving only and to be disconnected from the steering system with an electromagnetic clutch at higher speeds. In this manner, satisfactory driver's feel could be secured for this class of vehicles.Incorporation of the differential elements into the control system contributes to improving the response and eliminating self-exited vibration of the system. Such elements also serves to reduce the effect of inertia, but an excessively strong differential element causes adverse effects, such as poor stability when hands are released from the steering wheel.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Improvement of Driver's Feel of Electric Power Steering


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    Autotechnologies Conference and Exposition ; 1989



    Publication date :

    1989-04-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Improvement of drivers feel for electric power steering

    Okamoto,K. / Chikuma,I. / Saito,N. et al. | Automotive engineering | 1989



    Power Steering " Road Feel"

    Adams F.J. / TRW,Cam Gears,GB | Automotive engineering | 1983


    Power Steering ‘Road Feel’

    Adams, F. J. | SAE Technical Papers | 1983


    Automotive Power Steering "Feel"

    Adams,F.J. / Cam Gears,Clevedon,GB | Automotive engineering | 1981