An image processing-based method for determining the geometry transmission ratio of a continuously variable transmission gearbox
Dang Long Tran, Tri Nhut Do · Journal of Physics Conference Series · 2025
Abstract Nowadays, many applications based on image processing methods are deployed to bring convenience to use due to its outstanding superior features. This paper proposes an image processing-based method for determining the geometry transmission ratio of a continuously variable transmission (CVT) gearbox made up of a push-belt and two pulleys with synchronized width adjustments. The proposed method is demonstrated by many experiments on a real system consisting of 1 Logitech C992 Pro Webcam camera and 1 CVT gearbox. The experiments were conducted on more than 100 images. The experimental results show that the method’s error is between 6% and 8%, and the average processing time of 1 image is 0.07 seconds. This error depends on whether the camera position is parallel to the CVT gearbox’s cross-sectional plane or not. Furthermore, the reliability of the method is evaluated by the RMSE method up to 99%.