mechatronics is a combination of electrical engineering and mechanical engineering and uses concepts from both fields. Moreover, alot of coding and programming is involved. In the u.s, there aren't very many universities that give out mechatronics degrees. This is more common in countries like Japan, Singapore and some in Europe where there is heavy use of robotic manipulators in the factories. in the U.S, u either take M.E or E.E and then specialize in control systems meaning take alot of controls courses.
do a search on what "electric motor drives" are and see if that interests u. also check out sites like
www.microchip.com
www.freescale.com
and read their tutorials, application notes, etc. Microchip is very simple and u will like reading their technical presentations.
but it would help if u can tell us why mechatronics interests u ?
the person below me sounds like Dr.' Ned Mohan', a famous electrical engineering professor from the University of Minnesota. He specializes in Motor Drives as well as Power Electronics and he is well known leading expert in the area of Mechatronics in the U.S.
the funny thing about university of minnesota,t.c, is that they have a very small power program yet they have a very famous professor in this area. He should move to University of Wisconsin, Madison.