Abstract
New agricultural vehicle structure development is critical for agricultural automation. A simulation platform that can be used to validate the designed vehicle in digital space is a safe and efficient solution with low cost. Herein, a simulation platform for four-wheel tractor is constructed in Unity by combining a bicycle model and a simplified non-linear tire model. Based on the proposed model, different tires and center of mass positions were tested through simulation to design a stable vehicle. The results imply that the rear tires are more important for avoiding oversteer and center of mass should be placed at the rear part, demonstrating the potential for a safe, efficient and low-cost way to design vehicle structures in the Unity digital space.
