Method for determining the steering angle of a car

Abstract

The method for determining automobile steering angle, comprises the following steps: S1, establishes the structural model of steering system; S2, establishes the geometric model of full-load working condition right steering tie rod-steering knuckle; S3, based on full-load working condition right steering tie-rod-steering knuckle The geometric model and geometric theory establish a two-dimensional model of the position of the steering knuckle on the basis of the oblique projection plane; and obtain the position coordinates of the center of the spherical joint at the outer end of the right steering rod on the oblique projection plane; S4, simulating the relationship between the steering knuckle and the right steering For the movement of the tie rod, according to the position coordinates of the center of the spherical joint at the outer end of the right steering tie rod on the oblique projection plane, a two-dimensional model for calculating the steering angle is established to obtain the steering angle. The present invention determines the position of the center of the spherical joint at the outer end of the right steering rod on the oblique projection plane by projecting the steering knuckle and the right steering rod on the oblique projection plane and drawing two intersecting motion trajectories. The CAD two-dimensional modeling method is used to determine the position of the steering knuckle, thereby determining the steering angle, which has the advantages of good intuition, low cost and high precision.

Description

technical field [0001] The invention relates to the technical field of automobile information, in particular to a method for determining the steering angle of an automobile. Background technique [0002] The confirmation of the steering angle of the car is very critical to the intelligent control of the car and the improvement of the safety performance of the car. Now, common methods include graphing method, function method, three-dimensional modeling method, etc. The drawing method is to simulate the steering movement on the drawing according to the theory of descriptive geometry to determine the steering angle. The drawing method is characterized by strong intuition, but poor precision and low efficiency. The function method is to establish a mathematical model for calculating the steering angle of the steering wheel and substitute it into the initial conditions for calculation. Although the function method has high precision, modeling is time-consuming, inefficient and...

AI Technical Summary

Problems solved by technology

[0003] In view of this, the purpose of the embodiments of the present invention is to provide a method for determining the steering angle of a car, so as to improve the problem in the prior art that the acquisition of the steering angle of a car cannot take into account the requirements of intuitiveness, cost, and accuracy.

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