Teacher Cheng XXX, the designer of this thesis, gave detailed instructions and explanations on all aspects of the final design of this thesis, which enabled me to complete my graduation thesis design study. My teacher's rigorous attitude, rich knowledge, keen technical thinking, working attitude of striving for perfection, and insulting teacher style will always inspire the support and help of my three teachers. Express sincere thanks and high respect to the teacher.

Thanks to all the teachers who took the time to review and comment on this paper and participated in the defense of this paper.