본 발명은 조향휠의 조향각을 감지하는 조향각 센서, 모터의 전류량을 감지하는 모터 전류량 센서, 모터의 위치를 감지하는 엔코더, 차량의 속도를 감지하는 차속 센서, 토크 센서의 에러가 감지되면, 엔코더와 조향각 센서 및 모터 전류량 센서 각각에 의해 감지된 모터의 위치, 조향휠의 조향각 및 모터의 전류량을 이용하여 가상 토크를 추정하는 가상토크 추정부, 및 조향각 센서, 차속 센서 및 가상토크 생성부 각각으로부터 입력된 조향휠의 조향각, 차속 및 가상토크를 이용하여 모터의 동작을 위한 보조 토크를 검출하는 보조토크 검출부를 포함하는 것을 특징으로 한다.

    A motor driven power steering system may include: a steering angle sensor configured to sense a steering angle of a steering wheel; a motor current sensor configured to sense a current of a motor; an encoder configured to sense a position of the motor; a vehicle speed sensor configured to sense a speed of a vehicle; a virtual torque estimation unit configured to estimate, when an error of a torque sensor is detected, a virtual torque using the position of the motor, the steering angle of the steering wheel, and the current of the motor; and an assist torque calculation unit configured to calculate an assist torque for operation of the motor using the steering angle of the steering wheel, the speed of the vehicle, and the virtual torque.


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    Title :

    MOTOR DRIVEN POWER STEERING SYSTEM AND CONTROL METHOD THEREOF


    Additional title:

    전동식 조향 장치 및 그 제어 방법


    Contributors:
    KIM CHEON KYU (author) / YOO JI HOON (author)

    Publication date :

    2017-06-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / G01L Messen von Kraft, mechanischer Spannung, Drehmoment, Arbeit, mechanischer Leistung, mechanischem Wirkungsgrad oder des Drucks von Fluiden , MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE



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