Moving robot and control method thereof

A mobile robot, comprising:

• a main body configured to travel on a surface and remove foreign substances from the surface;
• a spin mop coupled to the main body, wherein the spin mop includes a first rotary plate with a first cleaning cloth and a second rotary plate with a second cleaning cloth, wherein the main body is configured to travel on the surface in response to rotation of the spin mop;
• and
• a controller configured to (a) set a traveling pattern of the mobile robot on the surface, (b) set a moving path of the main body based on the set traveling pattern, (c) determine a traveling state of the mobile robot by calculating a location change of the main body during traveling, (d) detect an occurrence of abnormal traveling during the traveling, wherein abnormal traveling occurs when the moving path of the main body deviates from the set moving path, (e) output a notification in response to the occurrence of abnormal traveling, and (f) activate automatically re-cleaning to clean a location where the abnormal traveling occurs after completing the traveling pattern for an area,
• wherein the controller is further configured to determine whether abnormal traveling occurs due to slipping of the spin mop caused by the foreign substances on the surface on which the main body is traveling, and
• wherein the controller sets automatically the re-cleaning to clean the location where the abnormal traveling occurs so that the main body moves in a straight direction.