Method and system for measuring maximum steering angle of vehicle by applying changes of internal inclination and horizontal angle
A technology of horizontal angle and steering angle, which is applied in the field of vehicle four-wheel alignment detection, which can solve the problems of inaccurate measurement accuracy and so on.
Inactive Publication Date: 2013-11-27
GUILIN BODA AUTOMOBILE TECH
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[0004] In view of this, the present invention provides a system for measuring the maximum steering angle of a vehicle by changing the inclination angle and the horizontal angle, the purpose of which is to solve the problem of inaccurate measurement accuracy and automatic measurement
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[0073] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0074] The four-wheel aligner is a necessary tool for modern vehicle chassis maintenance and testing. It measures the front wheel toe-in, camber, rear tilt, kingpin, inclination, steering reach, maximum steering angle, and rear wheel toe-in, camber, etc. of the vehicle chassis. Tilt, advance the line and other angles.
[0075] like figure 1...
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The invention discloses a system and method for measuring a steering angle of a vehicle. The system comprises a camera, a measurement target and a measurement and calculation device, wherein the camera is arranged on front wheels of the vehicle, the measurement target is placed on the rear wheels of the vehicle, the system is used for measuring a front wheel inclination angle SAI and a change DL of a front wheel horizontal angle, the change DL of the front wheel horizontal angle is divided by the front wheel inclination angle SAI to obtain a maximum steering constant, and anti-sine calculation is carried out the maximum steering constant through a formula ASIN (anti-sine) (maximum steering constant) to obtain a maximum steering angle of the vehicle. The system and the method provided by the invention are used for designing and completing automatic measurement of a rear inclination, an internal inclination and a steering front toe out angle with low cost when a left front wheel is steered leftwards 20o and the right front wheel is steered rightwards 20o, and achieve the function of automatically measuring the maximum steering angle with low cost.
Description
technical field [0001] The invention relates to the technical field of vehicle four-wheel alignment detection, in particular to a method and a system for measuring the maximum steering angle of a vehicle by using inclination and horizontal angle changes. Background technique [0002] At present, due to the limitation of the resolution and measurement range of the digital camera used, the sensor of the general four-wheel aligner cannot effectively reach the measurement range of ±20°, so it is impossible to turn the left front wheel 20° and turn the right front wheel Automatically measure caster angle, inclination angle and steering reach angle at right 20°. Most of the four-wheel aligners use a smaller rotation angle to automatically measure the caster and inclination angles, and use the method of observing the angle scale of the mechanical turntable to visually measure the steering reach; or use the method of observing the angle scale of the mechanical turntable to visually ...
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IPC IPC(8): B62D17/00
Inventor 蒋新华黄景中刘峰唐显峰
Owner GUILIN BODA AUTOMOBILE TECH