Since the application domains are representing a rather wide range of different systems at different levels of autonomy, it is obvious that the technology behind the systems is diverse as well. However, each of the systems discussed has at least three fundamental constituents: Control mechanisms, Sensors, and actuators. The basics of those constituents are discussed in the following chapters. The following topics are discussed in more details:

• Intelligent control;

• Sensor technology;

• Power sources;

• Electric motors.