Mathematical Modeling and Experimental Check of Output Signals of Magnetostrictive Converters of Movement

摘要

The article is dedicated to the studies of the output signal in magnetostrictive transducers of linear and angular displacements. The authors consider the issues related to the modeling of the magnetic fields of a permanent magnet and current pulses, the processes of formation of ultrasonic torsion waves and reading. The main purpose of the article is to simulate and research the output signal. Besides, modeling of an output signal of the magnetostrictive converter of movements and its experimental check at the author's laboratory stand is carried out. Also, reproduction signal shape research from magnet thickness were conducted with the fixed solenoid width along with the conduct of reproduction of signal amplitudes from the magnet width with the fixed width of the reproduction coil and from the internal radius of the solenoid at the fixed thickness of a permanent magnet and solenoid width. The results of the computational experiment showed that not only the amplitude of the output signal, but also its shape depends on the thickness of the permanent magnet. Also, studies showed that changing the inner radius of the solenoid is an inefficient way to increase the amplitude of the output signal. The analysis of the output signal received as a result of modeling and experimentally is completely confirmed by the results of theoretical research.