IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0736368
(2009-03-26)
|
등록번호 |
US-8522609
(2013-09-03)
|
우선권정보 |
DE-10 2008 001 339 (2008-04-23) |
국제출원번호 |
PCT/EP2009/053601
(2009-03-26)
|
§371/§102 date |
20101222
(20101222)
|
국제공개번호 |
WO2009/130103
(2009-10-29)
|
발명자
/ 주소 |
- Nobis, Guenter
- Abraham, Steffen
- Uffenkamp, Volker
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
7 |
초록
▼
A method for wheel suspension alignment includes: providing four measuring heads each having a monocular picture recording device; recording at least three geometrical details of one wheel, respectively, of a vehicle in an initial position, using each of the four measuring heads; carrying out relati
A method for wheel suspension alignment includes: providing four measuring heads each having a monocular picture recording device; recording at least three geometrical details of one wheel, respectively, of a vehicle in an initial position, using each of the four measuring heads; carrying out relative motion between the vehicle and the measuring heads from the initial position into at least one further position; recording at least three geometrical details of one wheel, respectively, of the vehicle in the further position, using each of the four measuring heads; carrying out local 3D reconstructions for determining translation vectors, rotation vectors and wheel rotational angles between the at least two positions, and wheel rotational centers and wheel rotational axes from the recorded geometrical details; determining a global scale for the measuring heads by scaling the translation vectors to have the same length; and determining camber, single toe and/or total toe of the vehicle.
대표청구항
▼
1. A method for wheel suspension alignment, the method comprising: recording at least three geometrical details of one wheel, respectively, of a vehicle standing in an initial position using each of four measuring heads of a wheel suspension alignment system, the wheel suspension alignment system ha
1. A method for wheel suspension alignment, the method comprising: recording at least three geometrical details of one wheel, respectively, of a vehicle standing in an initial position using each of four measuring heads of a wheel suspension alignment system, the wheel suspension alignment system having the four measuring heads situated in a known position with respect to one another, of which each has a monocular picture recording device;carrying out a relative motion between the vehicle and the measuring heads from the initial position into at least one further position, the relative position of the measuring heads to one another being known;recording at least three geometrical details of one wheel, respectively, of the vehicle standing in the further position using each of the four measuring heads;carrying out local 3D reconstructions for determining translation vectors, rotation vectors and wheel rotational angles between the at least two positions, and of wheel rotational centers and wheel rotational axes of the wheels from the recorded geometrical details;determining a global scale for the measuring heads by scaling the translation vectors of the wheels, so that the translation vectors have the same length; anddetermining at least one of: a camber, a single toe, or a total toe of the vehicle. 2. The method of claim 1, wherein in each case two of the measuring heads are situated in such a way that they lie opposite to each other symmetrically on both sides of the vehicle, the vehicle is moved through, in parallel to the axis of symmetry, between the oppositely situated measuring heads and in addition, the single toe of the rear wheel of the vehicle is determined. 3. The method of claim 1, wherein additionally a metrically known information is recorded by at least one of the measuring heads, in order to determine a scale factor absolutely, and in addition, a wheel base and a tread width of the vehicle are determined. 4. The method of claim 3, wherein the metrically known information is a distance between two features on the vehicle. 5. The method of claim 3, wherein the metrically known information is a distance covered by the vehicle. 6. The method of claim 5, wherein a speed of the vehicle is determined by speed sensors and the distance covered is determined by an integration of the speed. 7. A method for wheel suspension alignment, the method comprising: carrying out a relative motion between a vehicle and four measuring heads of a wheel suspension alignment system at a constant or non-constant speed, the relative position of the measuring heads to one another being known, the wheel suspension alignment system having the four measuring heads situated in a known position with respect to one another, of which each has a monocular picture recording device, picture taking of the measuring heads taking place synchronized in time;recording at least three geometrical details of one wheel, respectively, of the vehicle during the execution of the relative motion, using each of the four measuring heads, that are synchronized with one another in time, in at least two positions of the vehicle;carrying out local 3D reconstructions for determining translation vectors, rotation vectors and wheel rotational angles between the at least two positions, as well as of wheel rotational centers and wheel rotational axes of the wheels from the recorded geometrical details;determining a common global scale for the measuring heads by scaling the translation vectors of the wheels, so that the translation vectors have the same length; anddetermining at least one of: a camber, a single toe, or a total toe of the vehicle. 8. A method for wheel suspension alignment, the method comprising: carrying out a relative motion between a vehicle and four measuring heads of a wheel suspension alignment system at a non-constant speed, the relative position of the measuring heads to one another being known, the wheel suspension alignment system having four measuring heads situated in a known position with respect to one another, of which each has a monocular picture recording device;recording at least three geometrical details of one wheel, respectively, of the vehicle during the execution of the relative motion, using each of the four measuring heads, that are synchronized with one another, in a plurality of positions of the vehicle;carrying out local 3D reconstructions for determining translation vectors, rotation vectors and wheel rotational angles between the positions, as well as wheel rotational centers and wheel rotational axes of the wheels from the recorded geometrical details;determining motion profiles of the wheels from the recorded motions of the geometrical details;synchronizing the motion profiles of the wheels by adjusting the motion profiles with respect to position, shape and scale; and determining at least one of: a camber, a single toe, or a total toe of the vehicle. 9. A device for aligning the wheel suspension geometry of a vehicle, comprising: a system of four measuring heads situated in a known position with respect to one another, of which each has a monocular picture recording device and is equipped, in operation, using the picture recording device, to record in each case at least three geometrical details of one wheel, respectively, of the vehicle standing in an initial position and a further position; andan evaluation device, which is equipped, in operation, to determine, from the motion of the recorded geometrical details, translation vectors and rotation vectors of the wheels, to determine a global scale by scaling the translation vectors of the wheels, in such a way that the translation vectors have the same length, and to determine at least one of: a camber, a single toe, or a total toe of the vehicle. 10. A device for aligning the wheel suspension geometry of a vehicle, comprising: a system of four measuring heads situated in a known position with respect to one another, of which each has a monocular picture recording device and is equipped so that picture taking of the measuring heads takes place synchronized in time, and using the picture recording device, during operation to record in each case at least three geometrical details of one wheel, respectively, of the vehicle during the execution of a motion of the vehicle at constant or at non-constant speed relative to the measuring heads; andan evaluation device, which is equipped, in operation, to determine, from the motion of the recorded geometrical details, translation vectors and rotation vectors of the wheels, to determine a common global scale factor by scaling the translation vectors of the wheels, in such a way that the translation vectors have the same length, and to determine at least one of: a camber, a single toe, or a total toe of the vehicle. 11. A device for aligning the wheel suspension geometry of a vehicle, comprising: a system of four measuring heads situated in a known position with respect to one another, of which each has a monocular picture recording device and is equipped, in operation, using the picture recording device, to record in each case at least three geometrical details of one wheel, respectively, of the vehicle during the execution of a motion of the vehicle at non-constant speed relative to the measuring heads; andan evaluation device, which is equipped, in operation, to determine motion profiles of the wheels from the motion of the recorded geometrical details, to determine, from the motion of the recorded geometrical details, translation vectors and rotation vectors of the wheels, to synchronize the motion profiles of the wheels by adjusting the motion profiles with respect to position, shape and scale, and to determine at least one of: a camber, a single toe, or a total toe of the vehicle.
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