I am president of Delta Computer Systems, Inc.
Delta Computer Systems specializes in industrial motion control for motors and hydraulics.
My expertise is control theory, physics and the math required.
I am a member of the International Fluid Power Society Hall of Fame for my contribution to hydraulic motion control theory and writing magazine articles.
I have a YouTube channel about control theory
https://www.youtube.com/results?search_query=peter+ponders+pid
called Peter Ponder PID. Don't let the name fool you. I go much deeper into control theory than most colleges classes and it is all backed up with 35+ years of motion control.