Enhancing The Linearity Range of LVDT Using Hyperbolic Sine Function

A low-cost and low-complexity technique for enhancement the linearity range of linear variable differential transformer (LVDT) is described in this paper. The realization of the proposed technique is based on the use of the hyperbolic sine (sinh) function of the electronics circuit. The designed circuit comprises inexpensive commercial devices such as operational amplifiers and a small number of passive elements. Moreover, the proposed technique provides excellent performance without modifying the LVDT structure. The simulation results demonstrate the performance of LVDT linearity range, with the linearity errors below 3.5%. The simulation results are carried out to confirm the excellent performances and low cost.