MODELING AND VISUALIZATION OF THE MAGNETIC FIELD OF AN INDUCTIVE COIL USING LABVIEW

Abstract

The article considers the urgent problem of developing a modern laboratory practicum in physics under conditions of distance and blended learning, when the lack of access to real experimental equipment requires the use of virtual tools for modeling physical processes. It is shown that most existing simulators of electric and magnetic fields, in particular Ansys Electronics Desktop and Finite Element Method Magnetics (FEMM), are intended for trained users, have a complex interface, and require deeper preparation, which complicates their use at the initial stages of studying physics. In order to increase the clarity of the educational process and to form practical competencies of students, the use of the LabVIEW software environment is proposed, which combines the capabilities of graphical programming, visualization of results, and the creation of interactive virtual instruments. Within the framework of the study, a virtual instrument was developed for modeling the magnetic field of a current-carrying loop and an inductive coil based on the Biot – Savart – Laplace law. An algorithm for discretizing the loop into current elements with subsequent calculation of the coordinate components of the magnetic induction vector at a selected point in space has been implemented. Automatic construction of magnetic field lines of a coil with an arbitrary number of turns, symmetrical reflection of results relative to the coordinate axes, as well as the possibility of interactive investigation of the magnetic induction vector direction by entering coordinates or selecting a point with the mouse cursor in the graphical field, have been provided. The developed virtual instrument can be used as a demonstration tool during lectures and practical classes, as well as a component of a physics laboratory practicum under distance learning conditions. In the future, it is planned to integrate the program with a three-axis MEMS digital magnetometer to experimentally confirm the theoretical results and to expand the functional capabilities of the system.