Drive systems power robot movement and determine the robot's speed, strength, and capabilities. The main types are hydraulic, pneumatic, and electric. Hydraulic systems are used for large, powerful robots and can provide rotational or linear motion, while pneumatic systems are limited to smaller, faster pick-and-place robots. Electric motors like DC, AC servomotors and stepper motors are most common and use a rotor, stator, and commutator assembly to power robotic motion.