Integrated modeling and process control of continuous induction heating of ferromagnetic workpieces
The approach to the complex solution of the modeling problems and control process continuous induction heating ferromagnetic workpieces to plastic deformation temperature is suggested. Simulation of electromagnetic and thermal processes is carried out in a two-dimensional formulation by finite element method by using the COMSOL Multiphysics software. The analytical model of the plant comprising an inertial element and a transport delay element was used. Analysis of the control process quality is carried out by means of numerical methods of solving ordinary differential equations, built in Simulink® software. To reduce oscillation amplitude and transient time the separation of inductor into two independent sections is proposed. Investigation of dynamic modes of the system with various approximating expressions for the transport delay element allowed to find the control system parameters with a compensator taking into account the advantages of implementation more correctly. The simulation system results taking into account the distributed facility parameters are given.