Abstract
Rollover accidents of tractors frequently occur in the upland field in Korea, accounting for more than 50% due to the sloppy land. A new type of platform that can be highly stable to perform agricultural operations on the sloppy field like an upland field, should be developed. In this study, a simulation model of the platform was developed using AMESim (19.2, SIMENSE, Germany). Therefore, this is a basic study for the development of the new platform focused on stability in the upland field. The hydraulic simulation model of the platform was validated for performance evaluation during the driving conditions. The driving system of the developed platform is configured with the hydraulic pump, relief valve, hydraulic motor, control valve, and hydraulic tank. The hydraulic component of the model was tuned using the manufacturing specifications of each component. The input load of the simulation model was set as the torque of the driving unit, and the hydraulic pressure and vehicle speed generated by the hydraulic pump were selected for validation. A measurement system was installed to measure the actual field test data. Validation of the simulation model was carried out through comparative analysis of measurement and simulation results. The results show that there is an error between the pressure of the simulation and measurement, which is approximately 10%. In the future, the simulation model of the hydraulic part according to road conditions will be conducted through Co-simulation between the hydraulic simulation model and the dynamic model.
Figures & Tables
Fig. 1. Schematic diagram of hydraulic power transmission for agricultural multipurpose driving platform.
