A robotic vacuum cleaner,  is an autonomous machine that combines intelligent programming with a limited vacuuming system to clean a room without human intervention. These devices are typically small enough to navigate under furniture and are capable of reaching tight corners with the help of spinning brushes.

History

The first robot cleaner to be put into production was Electrolux Trilobite by the Swedish household and professional appliances manufacturer, Electrolux. In 1997, one of Electrolux's first versions of the Trilobite vacuum was featured on the BBC's science program, Tomorrow's World. Since then, a number of competitors have made entered into this market. 

In 2002, the American advanced technology company, iRobot launched the Roomba floor vacuuming robot. Initially, iRobot decided to produce 15,000 units and 10,000 more units depending on the success of the launch. The Roomba immediately became a huge consumer sensation.
By the Christmas season, iRobot produced 50,000 units to meet the holiday demand. After this success, major specialty retailers as well as more than 4,000 outlets such as
 Target, Kohl's and Linens 'n Things began to carry the Roomba.

Since 2002, new variations of robotic vacuum cleaners have appeared in the market. For example, the Canadian bObsweep robotic vacuum that both mops and vacuums, or the Neato Robotics XV-11 robotic vacuum, which uses laser-vision rather than the traditional ultrasound based models.

In 2014, Dyson announced its comeback to the robotic vacuum industry with the Dyson 360 Eye. The 360 refers to the 360 degree camera that is
mounted on the robot and is supposed to provide a better orientation while cleaning. This is a different approach to navigation and path
finding compared to products from Neato Robotics or iRobot. The robot vacuum is scheduled for a Japan-only release in Spring 2015
but international launches are expected to follow later in the year.


source Wikipedia article: https://en.wikipedia.org/wiki/Robotic_vacuum_cleaner