Simulation of electromagnetic suspension functioning processes in the MATLAB/Simulink system

Abstract

Abstract In various fields of technology, the electromagnetic method of suspending various elements has a number of advantages, but the limits of the stability of the system and the justification of its optimal parameters require additional research. According to the well-known Irnshaw theorem, in technical applications, there are certain limitations on solving the engineering problem of stable suspension of moving bodies using electric or magnetic fields, often in combination with a gravitational field. An effective way to solve the problem of ensuring the stability of electromechanical systems based on magnetic suspension is to use automatic feedback control in the control circuit. In order to obtain the necessary accuracy and quality of the regulated transient, automatic control systems can use PID controllers. The problem of selecting the parameters of PID controllers is based on mathematical modeling, which is implemented using computer systems that provide the construction and research of designed electromechanical systems, for example, MATLAB with the Simulink module. The computer simulation of transients carried out in the Simulink system allowed us to obtain the dynamic characteristics of the PID controller with variations in their main parameters. The developed electromagnetic suspension circuit for stability requires a position sensor that is electrically connected to the PID controller in the feedback loop. Mathematical modeling of the dynamics of the electromagnetic suspension system should take into account the nonlinear nature of the main elements, including the PID controller, and their characteristic parameters. Simulation of the dynamics of the electromagnetic suspension system under study can be carried out and visually visualized in the MATLAB/Simulink environment in a wide range of parameter variations.