US 11,654,906 B2
Control apparatus and method for improving fuel efficiency in CACC system
Yoon Soo Kim, Suwon-si (KR); Dong Gyu Noh, Dongducheon-si (KR); In Yong Jung, Suwon-si (KR); Su Lyun Sung, Anyang-si (KR); Seung Wook Park, Yongin-si (KR); Jong Rok Park, Seoul (KR); Kyung Joo Bang, Seoul (KR); Cho Rong Ryu, Incheon (KR); Min Byeong Lee, Seongnam-si (KR); Hahk Rel Noh, Bucheon-si (KR); and Dae Sung Hwang, Hwaseong-si (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA MOTORS CORPORATION, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA MOTORS CORPORATION, Seoul (KR)
Filed on Jan. 21, 2021, as Appl. No. 17/154,025.
Application 17/154,025 is a continuation of application No. 16/424,023, filed on May 28, 2019, granted, now 10,946,859.
Application 16/424,023 is a continuation of application No. 15/638,093, filed on Jun. 29, 2017, granted, now 10,308,248, issued on Jun. 4, 2019.
Application 15/638,093 is a continuation in part of application No. 15/368,023, filed on Dec. 2, 2016, granted, now 10,052,952, issued on Aug. 21, 2018.
Claims priority of application No. 10-2016-0083493 (KR), filed on Jul. 1, 2016; and application No. 10-2016-0184301 (KR), filed on Dec. 30, 2016.
Prior Publication US 2021/0146925 A1, May 20, 2021
Int. Cl. B60W 30/14 (2006.01); B60W 30/16 (2020.01); B60W 30/095 (2012.01); B60W 40/04 (2006.01)
CPC B60W 30/143 (2013.01) [B60W 30/095 (2013.01); B60W 30/0953 (2013.01); B60W 30/16 (2013.01); B60W 40/04 (2013.01); B60W 2554/80 (2020.02); B60W 2556/65 (2020.02); B60W 2720/103 (2013.01); B60W 2754/10 (2020.02)] 12 Claims
OG exemplary drawing
 
1. A cooperative adaptive cruise control (CACC) system of a subject vehicle to control a driving speed of the subject vehicle, the CACC system comprising:
a communication unit configured to wirelessly connect the subject vehicle and neighboring vehicles through Vehicle to Vehicle (V2V) communication and receive vehicle information including position and driving information from the neighboring vehicles using the V2V communication;
an information collection unit configured to comprise sensors, and collect driving information of a forward vehicle and vehicle information of the subject vehicle using at least one of the sensors of the subject vehicle; and
a controller configured to select a target vehicle to be followed by the subject vehicle based on the vehicle information of the neighboring vehicles that is acquired by the communication unit and the driving information of the forward vehicle that is collected by the information collection unit, to control the driving speed of the subject vehicle based on a target speed of the subject vehicle if the target vehicle to be followed by the subject vehicle is not selected, and to control the driving speed of the subject vehicle based on speed information of the target vehicle, speed information of the subject vehicle, and a target time gap if the target vehicle to be followed by the subject vehicle is selected,
wherein the controller selects the target vehicle by:
selecting vehicles that travel in the same lane as the subject vehicle as a first group of potential vehicles of interest,
selecting, in the first group of potential vehicles of interest, vehicles that exist within a predetermined distance as a second group of potential vehicles of interest, wherein the distance is measured by both the V2V communication and the at least one of the sensors,
selecting, in the second group of potential vehicles of interest, vehicles in which a difference between speed information received by the V2V communication and a speed measured by the at least one of the sensors is within a predetermined value as a third group of potential vehicles of interest, and
selecting one vehicle in the third group of potential vehicles of interest as the target vehicle to be followed by the subject vehicle.