System and method for autonomous mopping of a floor surface
First Claim
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1. An autonomous cleaning robot comprising:
- a housing;
a drive to move the housing across a surface;
a dispenser to apply fluid to the surface;
a cleaning assembly configured to attach a detachable cleaning pad to a bottom surface of the autonomous cleaning robot; and
a controller to operate the drive to move the autonomous cleaning robot along a room coverage cleaning trajectory to traverse the surface to be cleaned in two or more parallel straight paths and to move along a local scrub cleaning trajectory in which the autonomous cleaning robot repeatedly moves forward along a first path and backward along a second path such that the cleaning assembly pivots relative to the housing, the local scrub cleaning trajectory having a forward travel distance that exceeds a backward travel distance.
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Abstract
A mobile robot configured to travel across a residential floor or other surface while cleaning the surface with a cleaning pad and cleaning solvent is disclosed. The robot includes a controller for managing the movement of the robot as well as the treatment of the surface with a cleaning solvent. The movement of the robot can be characterized by a class of trajectories that achieve effective cleaning. The trajectories include sequences of steps that are repeated, the sequences including forward and backward motion and optional left and right motion along arcuate paths.
68 Citations
22 Claims
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1. An autonomous cleaning robot comprising:
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a housing; a drive to move the housing across a surface; a dispenser to apply fluid to the surface; a cleaning assembly configured to attach a detachable cleaning pad to a bottom surface of the autonomous cleaning robot; and a controller to operate the drive to move the autonomous cleaning robot along a room coverage cleaning trajectory to traverse the surface to be cleaned in two or more parallel straight paths and to move along a local scrub cleaning trajectory in which the autonomous cleaning robot repeatedly moves forward along a first path and backward along a second path such that the cleaning assembly pivots relative to the housing, the local scrub cleaning trajectory having a forward travel distance that exceeds a backward travel distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method comprising:
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moving an autonomous cleaning robot along a room coverage cleaning trajectory across a surface in an area to be cleaned; and moving the autonomous cleaning robot along a local scrub cleaning trajectory across a surface through a room, wherein moving the autonomous cleaning robot in the first local scrub cleaning trajectory comprises repeatedly moving the autonomous cleaning robot forward across the surface a forward travel distance while a cleaning assembly of the autonomous cleaning robot rotates relative to the surface, and moving the autonomous cleaning backward across the surface a backward travel distance while the cleaning assembly of the autonomous cleaning robot rotates relative to the surface, wherein the forward travel distance exceeds the backward travel distance. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification