Medical delivery robots, autonomous cleaning robots like the Roomba, and other robots that navigate around a physical place on their own without human physical guidance are some examples of autonomous robots. Contrarily, when most people think of robots, they tend to picture industrial robots, ones that are stationed at a fixed workstation, or those that are operated by a person.
Autonomous robots normally carry out their tasks without interacting with humans, unless doing so is essential to completing their duty. Many of these robots are equipped with sensors and other useful equipment that enables them to see any impediments in their path and move around in spaces like rooms, hallways, or other environments. Even sophisticated delivery robots can be taught to use elevators and move autonomously within a multi-story building. However, physical maintenance is still required for autonomous robots.