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상용차량의 정확한 하중 측정을 위한 겹판스프링의 이력특성 모델링 기법 개발
서명국(M. K. Seo),바트바야르 엔크바트(E. Batbayar),신희영(H. Y. Shin),이호연(H. Y. Lee),고재일(J. I. Ko) 유공압건설기계학회 2021 드라이브·컨트롤 Vol.18 No.2
In recent years, the demand for an onboard scale system which can directly monitor load distribution and overload of vehicles has increased. Depending on the suspension type of the vehicle, the onboard scale system could use different types of sensors, such as, angle sensors, pressure sensors, load cells, etc. In the case of a vehicle equipped with leaf spring suspension system, the load of the vehicle is measured by using the deflection or displacement of the leaf spring. Leaf springs have hysteresis characteristics that vary in displacement depending on the load state. These characteristics cause load measurement errors when moving or removing cargoes. Therefore, this study aimed at developing an onboard scale device for cargo vehicles equipped with leaf springs. A sectional modeling method which can reduce measurement errors caused by hysteresis characteristics was also proposed.