KR102569899B1 - 전기 모터를 구비하는 차량 및 그를 위한 주행 제어 방법 - Google Patents
전기 모터를 구비하는 차량 및 그를 위한 주행 제어 방법 Download PDFInfo
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- KR102569899B1 KR102569899B1 KR1020180153767A KR20180153767A KR102569899B1 KR 102569899 B1 KR102569899 B1 KR 102569899B1 KR 1020180153767 A KR1020180153767 A KR 1020180153767A KR 20180153767 A KR20180153767 A KR 20180153767A KR 102569899 B1 KR102569899 B1 KR 102569899B1
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Abstract
Description
도 2는 본 발명의 일 실시예에 따른 모터의 회생 제동 토크 제어를 수행하기 위한 차량 구성의 일례를 나타내는 블럭도이다.
도 3은 본 발명의 일 실시예에 따른 모터의 회생 제동 토크 제어가 적용되는 상황에서 작용하는 물리력의 기본 전제를 설명하기 위한 도면이다.
도 4는 본 발명의 일 실시예에 따른 모터의 회생 제동 토크 제어가 적용되는 곡선 주로 상황에서 작용하는 물리력을 설명하기 위한 도면이다.
도 5는 본 발명의 일 실시예에 따른 모터의 회생 제동 토크 제어에서 곡률 정보 보정을 설명하기 위한 도면이다.
도 6은 본 발명의 일 실시예에 따른 모터의 회생 제동 토크 제어에서 곡선 주로의 경사에 의한 보정을 설명하기 위한 도면이다.
도 7은 본 발명의 일 실시예에 따른 회생 제동 토크 제어가 수행되는 과정의 일례를 나타내는 순서도이다.
도 8은 본 발명의 일 실시예에 따른 모터의 회생 제동 토크 제어의 형태 및 효과를 일반적인 비교례와 비교하여 설명하기 위한 도면이다.
Claims (15)
- 모터의 동력을 차동 기어를 통해 양측 휠에 전달하는 차량에서 상기 모터의 회생 제동 토크를 제어하는 방법에 있어서,
전방의 곡선 주로의 존재 여부를 판단하는 단계;
상기 전방에 상기 곡선 주로가 존재하는 경우, 적어도 상기 곡선 주로의 곡률과 차속을 기반으로 상기 곡선 주로에서의 횡방향 하중 이동에 따라 상기 양측 휠 중 내측 휠에 가해질 하중을 판단하는 단계;
상기 판단된 하중을 기반으로 상기 내측 휠의 접지력을 판단하는 단계; 및
상기 곡선 주로의 진입 전에 상기 판단된 접지력을 기반으로 회생 제동 한계를 보정하는 단계를 포함하는, 회생 제동 토크 제어 방법. - 삭제
- 제1 항에 있어서,
상기 접지력을 판단하는 단계는,
상기 판단된 하중에 타이어와 노면의 마찰 계수를 곱하는 단계를 포함하는, 회생 제동 토크 제어 방법. - 제1 항에 있어서,
상기 보정하는 단계는,
상기 모터와 배터리의 상태를 기반으로 제1 회생 제동 토크를 판단하는 단계; 및
상기 접지력과 상기 제1 회생 제동 토크 중 작은 값인 제2 회생 제동 토크를 상기 회생 제동 한계로 결정하는 단계를 포함하는, 회생 제동 토크 제어 방법. - 제1 항에 있어서,
상기 곡선 주로의 진입 여부를 판단하는 단계; 및
상기 곡선 주로에 진입한 것으로 판단되면, 롤 각 정보 및 상기 양측 휠 각각의 휠속 중 적어도 하나를 기반으로 상기 회생 제동 한계를 재보정하는 단계를 더 포함하는, 회생 제동 토크 제어 방법. - 제5 항에 있어서,
상기 재보정하는 단계는, 상기 곡선 주로를 주행하는 동안 실시간으로 수행되는, 회생 제동 토크 제어 방법. - 제1 항에 있어서,
상기 곡률은 상기 곡선 주로의 최소 곡률을 포함하는, 회생 제동 토크 제어 방법. - 삭제
- 차동 기어를 통해 동력을 양측 휠에 전달하는 모터; 및
상기 모터의 회생 제동 토크를 결정하는 제어기를 포함하되,
상기 제어기는,
네비게이션 시스템을 통해 전방의 곡선 주로의 존재가 판단되면, 적어도 상기 곡선 주로의 곡률과 차속을 기반으로 상기 곡선 주로에서의 횡방향 하중 이동에 따라 상기 양측 휠 중 내측 휠에 가해질 하중을 판단하는 제1 연산부; 및
상기 곡선 주로의 진입 전에 상기 판단된 하중을 기반으로 상기 내측 휠의 접지력을 판단하고 상기 판단된 접지력을 기반으로 회생 제동 한계를 보정하는 제2 연산부를 포함하는, 자동차. - 삭제
- 제9 항에 있어서,
상기 제2 연산부는,
상기 판단된 하중에 타이어와 노면의 마찰 계수를 곱하여 상기 접지력을 판단하는, 자동차. - 제9 항에 있어서,
상기 제2 연산부는,
상기 모터와 배터리의 상태를 기반으로 결정된 제1 회생 제동 토크를 상기 접지력과 비교하고, 비교 결과 더 작은 값인 제2 회생 제동 토크를 상기 회생 제동 한계로 결정하는, 자동차. - 제9 항에 있어서,
상기 곡선 주로에 진입하면,
상기 제1 연산부는 롤 각 정보 및 상기 양측 휠 각각의 휠속 중 적어도 하나를 기반으로 상기 내측 휠에 가해질 하중을 보정하고,
상기 제2 연산부는 상기 보정된 하중을 기반으로 상기 회생 제동 한계를 재보정하는, 자동차. - 제13 항에 있어서,
상기 제1 연산부는,
상기 곡선 주로를 주행하는 동안 실시간으로 상기 하중을 보정하는, 자동차. - 제9 항에 있어서,
상기 곡률은 상기 곡선 주로의 최소 곡률을 포함하는, 자동차.
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US11904878B2 (en) * | 2020-08-18 | 2024-02-20 | Ford Global Technologies, Llc | System and method for off-road driving assistance for a vehicle |
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