Microwave heating based on two rotary waveguides to improve efficiency and uniformity by gradient descent method

This study aims to improve the efficiency and uniformity of microwave heating based on a rotary radiation structure. This study's steps are summarized as follows. First, using the finite element method in a simulation model, two radiation ports revolve on their axes and heat the material. Second, the heating efficiency at different angles is analyzed to find efficient angles of radiation ports. Finally, to improve the uniformity of material with high efficiency, we use the gradient descent method in machine learning to optimize the heating time at selected angles. An experimental system is established for this research and the simulation results are verified by experiments, showing that this research has an obvious superiorly and efficiency and uniformly of the material have improved compared to traditional heating results without angle selection and optimization of the heating time. What is more, influences of material with different shapes, positions and materials have also been discussed.