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Steering assist device

  • US 10,647,354 B2
  • Filed: 06/04/2018
  • Issued: 05/12/2020
  • Est. Priority Date: 06/06/2017
  • Status: Active Grant
First Claim
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1. A steering assist device comprising:

  • surrounding monitoring means for monitoring surroundings of an own vehicle;

    lane recognition means for recognizing a lane to obtain lane information including a relative positional relationship of said own vehicle with respect to said lane;

    lane change assist control means for starting a lane change assist control to control, in response to a lane change assist request, a steering so as to have said own vehicle change lanes from an original lane in which said own vehicle is currently traveling toward a target lane adjacent to said original lane, based on said lane information, when an other vehicle which has a probability to be an obstacle when said own vehicle is changing lanes is not detected by said surrounding monitoring means;

    lane change assist stop means for stopping said lane change assist control, when said surrounding monitoring means detects an approaching vehicle which has a probability of excessively approaching said own vehicle if said lane change assist control continues being performed, while said lane change assist control is being performed;

    notification means for notifying a driver of said own vehicle that said lane change assist control is stopped halfway;

    original lane return assist control means for performing original lane return assist control to control said steering so as to have said own vehicle return to said original lane from said target lane, when said approaching vehicle is detected while said own vehicle is travelling in said target lane after entering said target lane so that said lane change assist control is stopped;

    approaching vehicle-in-original-lane determination means for determining, based on monitoring information detected by said surrounding monitoring means, whether or not an original lane side vehicle is detected, said original lane side vehicle being an other vehicle having a probability of excessively approaching said own vehicle if said own vehicle is returned to said original lane; and

    lateral speed zero control means for prohibiting said original lane return assist control means from performing said original lane return assist control, and for performing lateral speed zero control to control said steering so as to maintain a lateral speed which is a speed in a lane width direction of said own vehicle at zero, when said approaching vehicle-in-original-lane determination means determines that said original lane side vehicle is detected.

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