The use of mechanical, electrical, electronic, computer, and control engineering concepts combined in a particular machine or process is occurring at an increasingly rapid pace. The integration of these concepts is referred to as mechatronics. Engineers and technicians now must have knowledge and skills in all of the areas mentioned. Mobile machines have always incorporated knowledge from a variety of areas as needed to incorporate desired features and work functions. However, the time has come to make a more formal recognition of this integration of ideas.