**2.4 Actuator and control system technology**

Complex systems of actuators, joints and links are controlled based on information sensed and interpreted by internal and external sensor systems. Actuators create the activity and movement within robotic systems. Today following actuation systems are used in a robotic power, motion/sensing and cognition augmentation:


Besides the increasing ability to downsize motors it is by now possible to improve precision and speed. Advances in robot kinematics and robot dynamics are important for developing robust and save control system technology for more complex man-robot systems in construction and building technology.
