Method for determining the driving resistance of a vehicle
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B60W-040/10
G06F-019/00
출원번호
US-0002903
(2011-11-17)
등록번호
US-8768536
(2014-07-01)
우선권정보
DE-10 2011 013 022 (2011-03-04)
국제출원번호
PCT/EP2011/005798
(2011-11-17)
§371/§102 date
20130903
(20130903)
국제공개번호
WO2012/119621
(2012-09-13)
발명자
/ 주소
Papajewski, Jens
Wilhelm, Christian
Bass, Kostyantyn
출원인 / 주소
Audi AG
대리인 / 주소
Feiereisen LLC, Henry M
인용정보
피인용 횟수 :
0인용 특허 :
7
초록▼
A method for determining the driving resistance of a vehicle by taking into account a value for the vehicle mass is described. Before beginning to drive, the vehicle mass and driving resistance coefficients are estimated with an estimation method by taking into account sensor signals, and an initial
A method for determining the driving resistance of a vehicle by taking into account a value for the vehicle mass is described. Before beginning to drive, the vehicle mass and driving resistance coefficients are estimated with an estimation method by taking into account sensor signals, and an initial value for the driving resistance is calculated from the vehicle mass and the driving resistance coefficients. A corrected value for the driving resistance and the vehicle mass is calculated while driving, based on measured driving-related values, which are measured in chronological succession.
대표청구항▼
1. A method of determining a driving resistance of a vehicle, wherein the driving resistance is calculated by taking into account a value of a vehicle mass, the method comprising: before driving begins, estimating the vehicle mass and driving resistance coefficients with an estimating method by taki
1. A method of determining a driving resistance of a vehicle, wherein the driving resistance is calculated by taking into account a value of a vehicle mass, the method comprising: before driving begins, estimating the vehicle mass and driving resistance coefficients with an estimating method by taking into consideration sensor signals,determining from the estimated vehicle mass and the estimated driving resistance coefficients an initial value of the driving resistance,while driving, consecutively measuring driving-related values, andwhile driving, determining corrected values for the driving resistance and for the vehicle mass based on the measured driving-related values. 2. The method of claim 1, wherein before driving begins, the vehicle mass and the driving resistance coefficients are estimated with a mathematical simulation model by taking into account data that are transmitted via a data bus to a control unit disposed in the vehicle or data that are stored in a control unit. 3. The method of claim 2, wherein the sensor signals comprise data obtained from sensors selected from load sensors, temperature sensors, seat occupancy sensors, pressure sensors, moisture sensors and wheel sensors. 4. The method of claim 1, wherein vehicle-specific default values and correction values derived from the sensor signals are used in the estimation method for estimating the vehicle mass and the driving resistance coefficients. 5. The method of claim 1, wherein the measured driving-related values are values selected from a driving force, a road gradient resistance force, a speed and an acceleration. 6. The method of claim 5, wherein the corrected values for the vehicle mass and the driving resistance coefficients are calculated based on the measured driving-related values by using the following equation of motion: ⅆvⅆt*m+F0+F1v+F2v2=FA-FST-(JMOTiG2RWHEEL2+JWHEEL1RWHEEL2)*ⅆvⅆtwherein RWHEEL is a radius of wheels, JMOT is a motor inertia, JWHEEL is a combined mass inertia of the wheels, brakes and drive shafts, and iG is a total gear ratio. 7. The method of claim 5, wherein the driving-related values are measured at different speeds, and the corrected values for the driving resistance coefficients and the vehicle mass are obtained by solving the following matrix equation with a least-squares method: [a11v1v12a21v2v22⋮⋮⋮⋮ai1vivi2⋮⋮⋮⋮aN1vNvN2]·[mF0F1F2]= [FA,1-FST,1-(JMOT·iG2RWHEEL2+JWHEELRWHEEL2)·a1FA,2-FST,2-(JMOT·iG2RWHEEL2+JWHEELRWHEEL2)·a2⋮FA,i-FST,i-(JMOT·iG2RWHEEL2+JWHEELRWHEEL2)·ai⋮FA,N-FST,N-(JMOT·iG2RWHEEL2+JWHEELRWHEEL2)·aN]wherein N is a total number of measurements, ai, is an acceleration, vi is a speed, FA,i is the driving force, FST,i is the road gradient force, RWHEEL is a radius of wheels, JMOT is a motor inertia, JWHEEL is a combined mass inertia of the wheels, brakes and drive shafts, and iG is a total gear ratio.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (7)
Loffler Jurgen,DEX ; Frei Rasmus,DEX ; Steiger-Pischke Andrea,DEX ; Bolz Martin-Peter,DEX ; Poljansek Marko,DEX ; Hermsen Wolfgang,DEX ; Hulser Holger,DEX, Method and device for determining a variable representing the road resistance on a motor vehicle.
Petzold, Rainer; Steinborn, Mario; Herter, Peter; Bitzer, Franz, Method for adjusting the clutch torque of a motor vehicle depending upon the driving resistance.
Piepenbrink Andreas,DEX ; Rossmann Thomas,DEX, Method for determining an intersection-torque in a driving line of a vehicle with an automatic transmission.
Tokimasa, Mitsuhiro; Kumabe, Hajime; Niwa, Satoshi; Fukuda, Shotaro; Takeda, Masayoshi; Osaki, Shintaro, Running control apparatus and running control program for the apparatus.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.