Mechatronics is the fusion of machinery (mechanics) and electricity (electronics) and the field of control engineering. Mechanical and electrical elements are inseparable. For example, when moving a robot arm, the movement of the arm requires a mechanical element, and the motor for driving force requires an electric element. Currently, our laboratory is studying electric transporter, industrial AC motors, DC/DC converters, walking robots reproducing human muscle structures, and so on. Our laboratory is engaged in research to control these electrical and mechanical elements at will.