Method of operating an electrically controllable brake system and brake system which is operated according to the method
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G06F-007/70
G06F-019/00
G06G-007/00
G06G-007/76
B60T-017/22
B60T-008/36
B60T-008/40
B60T-008/90
B60T-013/68
출원번호
US-0812655
(2011-07-25)
등록번호
US-9085289
(2015-07-21)
우선권정보
DE-10 2010 032 929 (2010-07-30)
국제출원번호
PCT/EP2011/003722
(2011-07-25)
§371/§102 date
20130403
(20130403)
국제공개번호
WO2012/013328
(2012-02-02)
발명자
/ 주소
Knechtges, Josef
Heller, Frank
Bach, Thomas
출원인 / 주소
Lucas Automotive GmbH
대리인 / 주소
MacMillan, Sobanski & Todd, LLC
인용정보
피인용 횟수 :
0인용 특허 :
6
초록▼
A method for operating an electrically controllable brake system for a motor vehicle having at least one electrically actuated valve arrangement for setting a pressure difference between a second brake pressure and a first brake pressure, wherein in a first time interval a predetermined first pressu
A method for operating an electrically controllable brake system for a motor vehicle having at least one electrically actuated valve arrangement for setting a pressure difference between a second brake pressure and a first brake pressure, wherein in a first time interval a predetermined first pressure difference is set and an associated first power consumption value of the pump is identified; in a second time interval a predetermined second pressure difference is set and an associated second power consumption value of the pump is identified; a correction value is obtained from the first power consumption value and the second power consumption value; the correction value is taken into account for setting a set-point value for the pressure difference.
대표청구항▼
1. A method for operating an electrically controllable brake system for a motor vehicle with a master cylinder for generating a first brake pressure, with an electrically driven pump for generating a second brake pressure, and with at least one electrically driven valve arrangement for setting a pre
1. A method for operating an electrically controllable brake system for a motor vehicle with a master cylinder for generating a first brake pressure, with an electrically driven pump for generating a second brake pressure, and with at least one electrically driven valve arrangement for setting a pressure difference between the second brake pressure and the first brake pressure, wherein: in a first time-interval a predetermined first pressure difference is set and an associated first power consumption of the pump is ascertained,in a second time-interval a predetermined second pressure difference is set and an associated second power consumption of the pump is ascertained,a correction value is ascertained from the first power consumption and the second power consumption, andthe correction value taken into consideration for the purpose of setting a set-point value for the pressure difference. 2. A method for operating an electrically controllable brake system for a motor vehicle with wheel cylinders in which a first brake pressure is generated, with an electrically driven pump for generating a second brake pressure, and with at least one electrically driven valve arrangement for setting a pressure difference between the second brake pressure and the first brake pressure, wherein: in a first time-interval a predetermined first pressure difference is set and an associated first power consumption of the pump is ascertained,in a second time-interval a predetermined second pressure difference is set and an associated second power consumption of the pump is ascertained,a correction value is ascertained from the first power consumption and the second power consumption, andthe correction value is taken into consideration for the purpose of setting a set-point value for the pressure difference. 3. The method according to claim 1, wherein a termination of the method occurs if a braking operation initiated by a driver of the vehicle and/or an automatic braking operation occurs. 4. The method according to claim 1, wherein a termination of the method occurs if a braking operation is imminent. 5. The method according to claim 1, wherein for the purpose of ascertaining the correction value a ratio is derived from the first power consumption and the second power consumption. 6. The method according to claim 1, wherein for the purpose of ascertaining the correction value a difference is derived from the first power consumption and the second power consumption. 7. The method according to claim 5, wherein an existence of a system error is inferred if a value of the correction value is ascertained that does not lie within a predetermined range. 8. The method according to claim 1, wherein the first pressure difference or the second pressure difference is set to a value of an order of magnitude zero. 9. The method according to claim 1, wherein the first time-interval and the second time-interval are of a same duration. 10. The method according to claim 1, wherein the first time-interval and the second time-interval are of different duration. 11. The method according to claim 1, wherein the pump is driven in such a way that in the first time-interval and in the second time-interval a rate of delivery of a same magnitude is achieved. 12. The method according to claim 1, wherein the pump is driven in such a way that in the first time-interval and in the second time-interval rates of delivery of differing magnitude are achieved. 13. The method according to claim 1, wherein the first and second power consumptions are ascertained if in the respective first and second time-intervals the rate of delivery of the pump is constant. 14. The method according to claim 1, wherein the correction value is compared with a reference value, and the set-point value for the pressure difference is set in such a way that the correction value approximates to the reference value. 15. The method according to claim 14, wherein the comparison of the correction value with the reference value and the setting of the set-point value for the pressure difference are repeated until such time as the correction value has approximated to the reference value within a predetermined deviation. 16. The method according to claim 14, wherein the existence of a system error is inferred if the approximation of the correction value to the reference value has not occurred within a predetermined period of time and/or after a predetermined number of repetitions. 17. The method according to claim 14, wherein the reference value is predetermined in a manner depending on the first and/or second pressure difference. 18. An electrically controllable brake system that is operated in accordance with a method according to claim 1. 19. The method according to claim 6, wherein an existence of a system error is inferred if a value of the correction value is ascertained that does not lie within a predetermined range. 20. The method according to claim 2, wherein a termination of the method occurs if a braking operation initiated by a driver of the vehicle and/or an automatic braking operation occurs. 21. The method according to claim 2, wherein a termination of the method occurs if a braking operation is imminent. 22. The method according to claim 2, wherein for the purpose of ascertaining the correction value a ratio is derived from the first power consumption and the second power consumption. 23. The method according to claim 2, wherein for the purpose of ascertaining the correction value a difference is derived from the first power consumption and the second power consumption. 24. The method according to claim 22, wherein an existence of a system error is inferred if a value of the correction value is ascertained that does not lie within a predetermined range. 25. The method according to claim 2, wherein the first pressure difference or the second pressure difference is set to a value of an order of magnitude zero. 26. The method according to claim 2, wherein the first time-interval and the second time-interval are of a same duration. 27. The method according to claim 2, wherein the first time-interval and the second time-interval are of different duration. 28. The method according to claim 2, wherein the pump is driven in such a way that in the first time-interval and in the second time-interval a rate of delivery of a same magnitude is achieved. 29. The method according to claim 2, wherein the pump is driven in such a way that in the first time-interval and in the second time-interval rates of delivery of differing magnitude are achieved. 30. The method according to claim 2, wherein the first and second power consumptions are ascertained if in the respective first and second time-intervals the rate of delivery of the pump is constant. 31. The method according to claim 2, wherein the correction value is compared with a reference value, and the set-point value for the pressure difference is set in such a way that the correction value approximates to the reference value. 32. The method according to claim 31, wherein the comparison of the correction value with the reference value and the setting of the set-point value for the pressure difference are repeated until such time as the correction value has approximated to the reference value within a predetermined deviation. 33. The method according to claim 31, wherein the existence of a system error is inferred if the approximation of the correction value to the reference value has not occurred within a predetermined period of time and/or after a predetermined number of repetitions. 34. The method according to claim 31, wherein the reference value is predetermined in a manner depending on the first and/or second pressure difference. 35. An electrically controllable brake system that is operated in accordance with a method according to claim 2. 36. The method according to claim 23, wherein an existence of a system error is inferred if a value of the correction value is ascertained that does not lie within a predetermined range.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (6)
Inagaki Shoji (Susono JPX) Yamamoto Masaki (Susono JPX) Hattori Noriaki (Anjo JPX) Tozu Kenji (Kariya JPX) Mihara Jun (Toyoake JPX) Itoh Takayuki (Nagoya JPX) Sugiura Shingo (Kariya JPX) Yamazaki Nor, Brake control apparatus for automotive vehicle that includes feedfoward/feedback mixing device.
Attallah, Faouzi; Scheller, Tobias; Robert, Tom, Method and device for the calibration or diagnosis of a motor vehicle brake system having a cyclically operated pump.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.