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Title: Nonlinearity Compensation of Linear Variable Displacement Transducer Based on Differential Evolution Algorithm
Authors: S. Murugan; SP. Umayal
Aff: Department of Electrical and Electronics Engineering, Einstein College of Engineering affiliated to Anna University-Chennai, Tirunelveli 627 012, Tamil Nadu, India
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Keywords: Linear Variable Displacement Transducer (LVDT); Nonlinearity; Differential Evolution (DE) Algorithm
Abstract:Background: Transducers rarely possess a perfectly linear transfer characteristic, but always have some degree of non-linearity over their range of operation. Attempts have been made by many researchers to increase the range of linearity of transducers. Objective: This paper presents a method to compensate nonlinearity of Linear Variable Displacement Transducer (LVDT) based on Differential Evolution (DE) algorithm. Because of the mechanism structure, LVDT often exhibit inherent nonlinear inputoutput characteristics. The best approximation capability of optimized ANN technique is beneficial to this. The use of this proposed method is demonstrated through computer simulation with the experimental data of two different LVDT. Results: The results reveal that the proposed method compensated the presence of nonlinearity in the displacement transducer with very low Mean Square Error (MSE) and better linearity. Conclusion: This research work involves less computational complexity and it behaves a good performance for nonlinearity compensation for LVDT and has good application prospect.