Abstract
EHPS는 탈엔진형 조향기술로 BLDC 모터를 통해 유압펌프를 작동시켜 조향력을 보조하는 동력 조향장치이다. EHPS는 BLDC 모터, 기어펌프 및 유압회로, 파워 스티어링 등으로 이루어진 전기전자, 유압 및 기계시스템의 복합적 시스템으로 모델링이 어렵다. 본 논문에서는 EHPS 시스템의 구성 부품을 수학적 모델링 하였고, AMESim을 이용하여 multi-domain 시스템의 시뮬레이션 모델을 구축하였다. 이를 활용한 다양한 시뮬레이션을 통해 개발 초기단계에서의 시행착오를 줄이고 완성도 높은 EHPS 개발 업무를 수행하는 데 도움을 줄 수 있을 것으로 사료된다. Electro-hydraulic power steering (EHPS) system is the power-assisted steering which operates the hydraulic pump by BLDC motors for assisting the steering force. EHPS consists of BLDC motor, gear pump, oil-hydraulic circuit and steering system. Since EHPS is a convergence system consisting of electricity and electronic, hydraulic and mechanical system, it is difficult to establish the simulation model. In this paper, the mathematical model of EHPS system components were presented, and the simulations of the multi-domain system were performed by using AMESim. The trial and error of development would be reduced by using this simulation results, and it would be helpful for developing high-quality EHPS.
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