Vehicle Centroid Measurement System Based On Forward Tilt Method Error Analysis

This paper proposes a calculation method for accurately measuring axle weight, total weight and centroid coordinates of vehicles based on forward tilting method. The composition of the measuring device is elaborated, and the centroid calculation method is proposed.Then the vehicle's centroid height error and error influencing factors are discussed under different conditions. It is concluded that the variation of the centroid error is smaller when the inclination angle of the bearing platform is greater than 12 degrees, so the inclination angle is recommended to be 12∼15 degrees. The system is calibrated by standard parts, and the position of the center of mass of the vehicle is actually measured. The repeatability error of the centroid position of the measuring system is calculated to be 0.86 mm, and the relative error when the center of mass height is maximum is 0.1%, which achieves high test accuracy.Therefore, the measuring device can be extended to the actual use field.