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박영태,권성원,강전홍 ( Y . T . Park,S . W . Kwon,J . H . Gang ) 한국센서학회 1996 센서학회지 Vol.5 No.3
A L DT is an electromechanical transducer that produces an electrical output proportional to The displacement of separate movable core. A convential LDT in construction has a disadvantage which the measurement range to the length ratio is small. This paper proposed a new type LDT, which improved methodes of construction. The proposed LDT and a conventional LVDT with the same dimension are simulated by FE. In the process of the simulation and construction, the performance of two type LVDTs are evaluated. Linearity error of a conventional LVDT was ±3 % in measuring range of ±5 mm and linearity error of the proposed LVDT was ±0.5 % in the same range. It was evident from the theoritical relationships and the experimental results that the proposed LVDT has been better performance than a convential type.