[특허]Vehicle brake hydraulic pressure control apparatus and road surface friction coefficient estimating device

Vehicle brake hydraulic pressure control apparatus and road surface friction coefficient estimating device 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60T-008/1755 B60T-008/1761 B60T-008/1763
출원번호	US-0362163 (2016-11-28)
등록번호	US-10239507 (2019-03-26)
우선권정보	JP-2011-231712 (2011-10-21); JP-2011-231717 (2011-10-21)
발명자 / 주소	Asano, Kiyonori
출원인 / 주소	AUTOLIV NISSIN BRAKE SYSTEMS JAPAN CO., LTD.
대리인 / 주소	Calderon, Andrew M.
인용정보	피인용 횟수 : 0 인용 특허 : 39

초록 ▼

One embodiment provides a vehicle brake hydraulic controller including: an antilock braking controlling module configured to perform an antilock braking control in which a brake hydraulic pressure applied to wheel brakes is reduced under the condition that a slip-related amount has reached a pressure reduction threshold value; and a turning judging module configured to judge whether a vehicle is turning based on a steering angle, wherein, when the antilock braking control is performed and in the case that the turning judging module judges that the vehicle is turning, the antilock braking controlling module performs a turning pressure reduction control so as to: change the pressure reduction threshold values to be more easily reached by the slip-related amount than at the time of straight running; and change the pressure reduction amounts to be larger than that at the time of straight running.

대표청구항 ▼

1. A road surface friction coefficient judging device comprising: a first estimating module configured to estimate a first road surface friction coefficient based on a lateral acceleration;a second estimating module configured to estimate a second road surface friction coefficient based on a longitudinal acceleration; anda selecting module configured to select either the first road surface friction coefficient or the second road surface friction coefficient to thereby estimate a road surface friction coefficient of a road surface,wherein the selecting module has a limit steering judgment section configured to judge whether steering exceeding a limit of road surface conditions is performed based on at least a steering angle and a vehicle speed, andwherein the selecting module selects: the first road surface friction coefficient or the second road surface friction coefficient, whichever smaller, as the road surface friction coefficient when the limit steering judgment section judges that steering exceeding the limit of road surface conditions is performed; andthe second road surface friction coefficient as the road surface friction coefficient when the limit steering judgment section judges that steering exceeding the limit of road surface conditions is not performed. 2. The road surface friction coefficient judging device of claim 1, wherein the limit steering judgment section includes: a normative yaw rate calculation section configured to calculate a normative yaw rate from the steering angle and the vehicle speed;a road surface limit yaw rate calculation section configured to calculate a road surface limit yaw rate from the lateral acceleration and the vehicle speed; anda yaw rate judgment section configured to judge whether a deviation obtained by subtracting the road surface limit yaw rate from the normative yaw rate is larger than a third given value, andwherein the limit steering judgment section judges: that steering exceeding the limit of road surface conditions is performed in the case that the deviation is larger than the third given value; andthat steering exceeding the limit of road surface conditions is not performed in the case that the deviation is not larger than the third given value. 3. The road surface friction coefficient judging device of claim 1, wherein the first estimating module calculates the first road surface friction coefficient from a lateral acceleration filter value obtained by performing a filtering process in which an absolute value of the lateral acceleration is made difficult to be changed to a decreasing side. 4. A vehicle brake hydraulic controller comprising: the road surface friction coefficient judging device of claim 1;an antilock braking controlling device configured to perform an antilock braking control using at least the road surface friction coefficient estimated by the road surface friction coefficient judging device; anda low μ road judging module configured to judge whether the road surface on which a vehicle runs is a low friction coefficient road surface,wherein the low μ road judging module includes: a first judgment section configured to judge whether a first condition that the road surface friction coefficient is smaller than a fourth given value is satisfied; andat least one of a second judgment section and a third judgment section, the second judgment section configured to judge whether a second condition that an estimated lateral acceleration calculated based on an actual yaw rate actually applied to the vehicle is smaller than a fifth given value is satisfied, the third judgment section configured to judge whether a third condition that a locking hydraulic pressure during the antilock braking control is smaller than a sixth given value is satisfied, andwherein the low μ road judging module judges that the road surface is the low friction coefficient road surface when the first condition and at least one of the second and third conditions are satisfied. 5. The vehicle brake hydraulic controller of claim 4, wherein the road surface friction coefficient is estimated using an actual lateral acceleration obtained by a lateral acceleration sensor. 6. The vehicle brake hydraulic controller of claim 4, wherein the second judgment section calculates: a tentatively-estimated lateral acceleration from an absolute value of the actual yaw rate and the vehicle speed; andthe estimated lateral acceleration by subjecting the tentatively-estimated lateral acceleration to a filtering process in which the tentatively-estimated lateral acceleration is made difficult to be changed only to a decreasing side. 7. The vehicle brake hydraulic controller of claim 4, wherein the third judgment section judges that the third condition is satisfied when the locking hydraulic pressures of a right front wheel and a left front wheel are respectively smaller than the sixth given value, the sixth given value being the same for all wheels or different for the respective wheels.

이 특허에 인용된 특허 (39)

Fischer Gerhard (Munchen DEX), ABS and/or ASC control system for motor vehicles.
상세보기
Terasaka, Masato, ABS control system.
상세보기
Shimada Kousaku (Katsuta JPX) Horikoshi Shigeru (Mito JPX) Monji Tatsuhiko (Katsuta JPX), Anti-skid control system for vehicle.
상세보기
Becker Rolf (Ditzingen DEX), Antilock brake adjusting system.
상세보기
Doden Berend-Wilhelm (Ludwigsburg DEX) Mller Elmar (Markgrningen DEX), Antilock brake control method.
상세보기
Zomotor Adam (Waiblingen DEX) Klinkner Walter (Stuttgart DEX) Schindler Erich (Unterweissach DEX) Mohn Frank-Werner (Esslingen DEX) Wohland Thomas (Stuttgart DEX), Apparatus and method for preventing instabilities in vehicle handling.
상세보기
Harada Masaharu,JPX ; Matsuda Katsushi,JPX ; Sakata Kunio,JPX, Automatic deceleration control method and apparatus for a vehicle.
상세보기
Ohtsu Nobuyuki,JPX ; Tanikawa Shigeyuki,JPX, Automotive brake control system with skid control unit.
상세보기
Ito Ken (Kanagawa JPX) Yasuno Yoshiki (Kanagawa JPX), Automotive yaw-sensitive brake control system.
상세보기
Maeda, Yoshinori; Okumura, Kazuya; Tsuchida, Michitaka; Uragami, Yoshio; Yoshizue, Kensuke; Ando, Satoshi; Sugiyama, Koji, Braking-driving force control device of vehicle.
상세보기
Kato Toshihisa,JPX ; Abe Yasuhiro,JPX, Coefficient of friction peak estimation apparatus.
상세보기
Lutz, Albert; Gerdes, Manfred, Device and method for controlling at least one operating-dynamics variable of a vehicle in a closed loop.
상세보기
Monzaki Shirou,JPX ; Sugiyama Mizuho,JPX, Drift-out suppress control device of vehicle improved for termination of control.
상세보기
Eckert Alfred,DEX ; Kranz Thomas,DEX, Driving stability control system with selective brake actuation.
상세보기
Abe Masaru (Tochigi JPX) Kohata Takashi (Tochigi JPX) Yahagi Toshio (Tochigi JPX) Iwagawa Yoshihiro (Tochigi JPX), Four-wheel steering motor vehicle.
상세보기
Meier Thomas,FRX ; Dressler Norbert,DEX ; Strehle Alfred,DEX, Method and apparatus for controlling the brake system of a vehicle.
상세보기
Hac, Aleksander Boguslaw; Bodie, Mark Olen, Method and apparatus for determining an individual wheel surface coefficient of adhesion.
상세보기
Negrin Dan (Wiesbaden DEX), Method and system for controlling rear wheel anti-lock brake control on four-wheel drive vehicles braking on high mu sur.
상세보기
Weber Darryl C. (Ann Arbor MI), Method and system for estimating vehicle speed reference value.
상세보기
Pickenhahn Josef (Plaidt DEX) Barr Stephen P. J. (Nauort DEX) Beuerle Christoph (Koblenz DEX) Glasmacher Klaus (Boppard DEX) Weidele Alois (Essingen DEX) Fischer Martin (Erzhausen DEX), Method of anti-lock brake control for motorcycle vehicle.
상세보기
Braschel Volker (Neuwied DEX) Pickenhahn Josef (Plaidt DEX), Method of controlling the brake pressure in an anti-lock vehicle brake system.
상세보기
Hauser Berthold (Frauenneuharting DEX) Ohm Heinz F. (Weiterstadt DEX) Roll Georg (Heusenstamm DEX), Motorcycle ABS using horizontal and vertical acceleration sensors.
상세보기
Kim Yong-Ho,KRX ; Lee Young-Sik,KRX, Power supply circuit with load protection function.
상세보기
Batistic Ivica,DEX ; Fennel Helmut,DEX ; Buttner Hans-Joachim,DEX, Process for improving the regulating behavior of an anti-lock systems.
상세보기
Yamamoto Osamu,JPX ; Shiraishi Shuji,JPX ; Yano Osamu,JPX, Reference value correcting device in driven wheel slip control system.
상세보기
Tachihata Tetsuya,JPX ; Kageyama Fumio,JPX, Road surface condition determining system.
상세보기
Takenaka, Toru; Urabe, Hiroyuki; Yano, Osamu; Mori, Yoshihiro; Ushimura, Tomoya, Road surface frictional coefficient estimating apparatus.
상세보기
Monzaki Shirou,JPX ; Inagaki Shoji,JPX, Stability control device of vehicle improved against hunting.
상세보기
Iwata Toru,JPX, System for controlling driving torque of vehicle.
상세보기
Wanke Peter,DEX, System for controlling yaw moment based on an estimated coefficient of friction.
상세보기
Eckert Alfred,DEX, System for driving stability control.
상세보기
Eckert Alfred,DEX ; Lammen Benno,DEX ; Wanke Peter,DEX ; Worsdorfer Karl-Friedrick,DEX ; Geiger Thomas,DEX ; Graber Johannes,DEX ; Drumm Stefan,DEX ; Kranz Thomas,DEX ; Neederkorn C. Jan,NLX, System for driving stability control.
상세보기
Eckert Alfred (Bodenheim DEX) Lammen Benno (Florsheim DEX) Wanke Peter (Frankfurt DEX) Worsdorfer Karl-Friedrick (Bodenheim DEX) Geiger Thomas (Freigericht/Neuses DEX) Graber Johannes (Eschborn DEX) , System for integrated driving stability control.
상세보기
Sano Yoshiaki,JPX, Turn control apparatus for a motor vehicle equipped with antiskid braking system.
상세보기
Chin Yuen-Kwok (Troy MI) Lin William C. (Troy MI), Vehicle handling control method for antilock braking.
상세보기
Watanabe, Takashi; Masaki, Shoichi; Sakai, Moriharu, Vehicle movement stabilizing device.
상세보기
Pilutti Thomas Edward ; Hrovat Davorin David ; Ulsoy Ali Galip, Vehicle steering system and method for controlling vehicle direction through differential braking of left and right road wheels.
상세보기
Tozu Kenji,JPX ; Yamazaki Norio,JPX ; Mihara Jun,JPX ; Itoh Takayuki,JPX ; Nishizawa Yoshiharu,JPX ; Kojima Seiichi,JPX ; Kuromitsu Hiromu,JPX, Wheel brake pressure controlling system in which vehicle operating conditions are calculated to alter wheel brake press.
상세보기
Kimbrough Scott Stephen, Wheelslip regulating brake control.
상세보기

IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

Vehicle brake hydraulic pressure control apparatus and road surface friction coefficient estimating device 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

이 특허에 인용된 특허 (39)

관련 콘텐츠

특허 원문 보기

IPC 상위 출원인

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

선택된 텍스트

연합인증

Vehicle brake hydraulic pressure control apparatus and road surface friction coefficient estimating device 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

전체(0) 논문(0) 특허(0) 보고서(0)

전체(0) 논문(0) 특허(0) 보고서(0)

이 특허에 인용된 특허 (39)

관련 콘텐츠

특허 원문 보기

IPC 상위 출원인

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

선택된 텍스트