Discloses are a motor-driven power steering (MDPS) system and an operating method thereof. The method for operating an MDPS system according to the present invention comprises the steps of: generating motor torque for assisting a steering wheel during steering according to the control of a driver and detecting the steering angle of the steering wheel; estimating a vertical load based on the motor torque and the steering angle; adjusting a boost curve depending on the surface state of a road determined according to the vertical load; and adjusting and outputting the motor torque in response to the boost curve.

    MDPS 시스템 및 그 동작방법이 개시된다. 본 발명의 MDPS 시스템의 동작방법은 운전자의 제어에 따라 스티어링 휠을 조향시 보조하기 위한 모터 토크를 발생하고, 상기 스티어링 휠의 조향각을 감지하는 단계, 상기 모터 토크와 상기 조향각에 기초하여 수직 부하를 추정하는 단계, 상기 수직 부하에 따라 판단된 노면 상태에 따라 부스트 커브를 조정하는 단계 및 상기 부스트 커브에 응답하여 상기 모터 토크를 조정하여 출력하는 단계를 포함한다.


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    Title :

    MOTOR DRIVEN POWER STEERING SYSTEM AND METHOD THEREOF


    Additional title:

    MDPS 시스템 및 그 동작방법


    Contributors:

    Publication date :

    2015-06-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B62D MOTOR VEHICLES , Motorfahrzeuge



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