Riassunto analitico
In the domain of agricultural machinery development, simulations have become an integral tool for advancing design and performance. This study focuses on implementing a dynamic model for a common subsystem in agricultural tractors—the rear hitch—within the digital twin framework. Utilizing Simscape Multibody, a comprehensive multibody model of the rear hitch mechanical subsystem was created. It was then integrated with the hydraulic system model of the rear hitch. Open-loop model testing, incorporating various loads for the rear hitch implement mass, was conducted, accompanied by an analysis of the effect of the implement centre of mass position on the rear hitch system. Dynamic tests were executed to gain deeper insights into the rear hitch characteristics and the tractor’s behaviour under heavy loading conditions. These rigorous tests aimed to evaluate the developed system’s behaviour and responsiveness. The results revealed a robust system adept at effectively managing heavy loads. Lastly, the control logic, tasked with managing the rear hitch’s position from the ground, was developed and assessed. It exhibited precise adherence to a user-defined target profile with acceptable precision.
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