The present disclosure relates to an ECU protection circuit, an electronic control unit and a steering assist system. Specifically, the ECU protection circuit according to the present disclosure includes: a Zener diode that allows a reverse current to flow when the phase voltage of a steering motor is more than a preset breakdown voltage; and a first switch that is turned on when the reverse current is applied and allows a first current to flow; and a second switch that is turned on when the first current flows and allows a second current to flow so that voltage supplied from a battery can be conducted to a PCO switch. The PCO switch is turned on when the supplied voltage is applied.

    본 개시는 ECU 보호회로, 전자 제어 유닛 및 조향 보조 시스템에 관한 것이다. 구체적으로, 본 개시에 따른 ECU 보호회로는 조향모터의 상전압이 미리 설정된 항복전압 이상인 경우, 역전류가 흐르도록 하는 제너 다이오드와, 역전류가 인가되면 턴온되어, 제1 전류가 흐르도록 하는 제1 스위치 및 제1 전류가 흐르면 턴온되어, 제2 전류가 흘러 배터리의 공급전압이 PCO 스위치로 도통되도록 하는 제2 스위치를 포함하며, PCO 스위치는, 공급전압이 인가되면 턴온되는 것을 특징으로 한다.


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    Title :

    ECU Circuit for protecting Electronic controller unit Electronic controller unit and System for assisting Steering


    Additional title:

    ECU 보호회로, 전자 제어 유닛 및 조향 보조 시스템


    Contributors:
    KANG JAE JUN (author) / LEE SU MIN (author)

    Publication date :

    2020-11-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern






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