Investigation and Simulation in Magnetostrictive Transducers of the Displacements Dynamic Parameters of the Solenoid Used for Reading the Output Signal and as a Device for Fixing the Magnetic Flux

摘要

The article is devoted to the study of the influence of dynamic parameters of solenoids used in magnetostrictive converters of linear or angular displacements. The influence of the internal resistance and capacitance of inductive elements on the accuracy of the measurement signal formation was studied. The existing mathematical models were considered. It was found that since inductive elements have not only internal resistance and inductance, but also capacitance, which allows us to conclude that resonance may appear, leading to a significant reduction in the frequency range of the inductive element and distortion of the output signal as a whole. At the internal resistances of the inductive element, as it was shown in computational experiments, the coupling point of the asymptotes is observed on the amplitude-frequency characteristics, the number of which increases to two when the internal resistance increases. With an increase in internal resistance, as studies have shown, the phenomenon of resonance appears. The selection and calculation of the required parameters of inductive elements can significantly increase their operating frequency range, which will allow forming the output signal shape without distortion.