Torque Assist Strategy for Hybrid Agricultural Tractor with Consideration of Field Operations

This paper proposes a torque assist strategy for operating a hybrid agricultural tractor in the field. In general, different field operations such as baling and rotary tillage require different patterns and amounts of torque. Thus, a large agricultural tractor is used to improve the farming efficiency. Therefore, this research has the goal of developing a hybrid tractor that uses a small electric motor to provide additional torque for specific field operations. To achieve this objective, a rule-based torque assist strategy is proposed and validated for a simulation model in the Autonomie framework, which is a commercial simulation tool. Finally, the work efficiencies and fuel consumptions of a conventional tractor and the hybrid tractor with the proposed torque assist strategy are compared using simulations. § 이 논문은 대한기계학회 동역학 및 제어부문 2013 년도 춘계 학술대회 (2013. 6. 4.-6., ICC제주) 발표논문임. † Corresponding Author, bsong@ajou.ac.kr C 2014 The Korean Society of Mechanical Engineers