Since "robot" has evolved to mean just about everything from toys to industrial welders, we need to define exactly what an autonomous mobile service robot means. These are the main criteria for evaluating the functionality, Mobility, Fault Tolerance, and User Interace, Environmental Interface, and Onboard Intelligence. Detailed ratings are summarized by general categories..
Mobility
The orange robots in the background must be contained in a safety zone while the autonomous mobile robot is free to roam (although the young man in the stroller is more interested in the "big iron".
Avg. Time Between Rescues (ATBR)
User Interface
Onboard Intelligence
Environmental Interface
Alpha - continuous control from outside operator.
Beta - semi-autonomous operation. Some functions are done by on-board decision making. Reacting to sensors or coordinated motor control upon single external command.
Gamma - all decisions are made onboard once configured from an external controller. IF-THEN or state machine programming for all possible conditions with a default or OTHERWISE state.
Delta - adds adaptive inference to the Gamma's default state. In the case of autonomous navigation, the ability to infer a route based on map data not preplanned alternate routes.
Epsilon - complete mobility within unrestricted indoor envronments. Direct human interaction without controller.
D 5 / h 7 3
Mobility
ATBR
User Interface
Intelligence
Enviro Interface
General Mobile Robot Categories
Typical Delta 5 characteristics
Standards