Samsung patents vacuum that senses floor type via pressure and motor load

1. A vacuum cleaner comprising: a main body; a suction head including a suction port through which debris is sucked up; a brush configured to rotate in the suction head; a brush motor configured to rotate the brush; a suction motor configured to generate suction force so that debris is sucked up through the suction port; a pressure sensor configured to measure atmospheric pressure and pressure at the suction port; a current sensor configured to measure current supplied to the brush motor; a memory configured to store trained data of a support vector machine (SVM), wherein the trained data includes correlation information in form of suction pressure values stored in correspondence with brush motor load values, such that the correlation information represent a two-dimensional graph of the suction pressure values and the brush motor load values, resulting in the trained data further representing a plurality of information regions determinable by the SVM in the two-dimensional graph, an information region among the plurality of information regions corresponding to a different cleaner state among a plurality of cleaner states based upon the information region corresponding to a region of suction pressure values and a region of brush motor load values among the suction pressure values and the brush motor load values in the correlation information; and at least one processor configured to: determine a currently determined suction pressure at the suction port based on the atmospheric pressure and the pressure measured by the pressure sensor, determine a currently determined load of the brush motor based on the current measured by the current sensor, determine a currently determined cleaner state among the plurality of cleaner states, based on the currently determined suction pressure, the currently determined load of the brush motor and the correlation information stored in the trained data by identifying an information region among the plurality of information regions to which the currently determined suction pressure and the currently determined load of the brush motor belong, the currently determined cleaner state including at least one of an operation state or a type of surface to be cleaned, and control an output of at least one motor among the brush motor and the suction motor, based on the currently determined cleaner state.