Method of automatically adjusting strength of suction power of suction motor and cordless vacuum cleaner therefor

A cordless vacuum cleaner comprising:

• a vacuum cleaner body;
• and
• a brush apparatus detachably coupled to the vacuum cleaner body,
• wherein the vacuum cleaner body comprises:
• a suction motor configured to generate a vacuum inside the cordless vacuum cleaner;
• a pressure sensor configured to measure a flow path pressure inside the cordless vacuum cleaner;
• a load detection sensor configured to measure an electrical load of the brush apparatus;
• a memory storing at least one artificial intelligence (AI) model trained to identify a type of floor to which the brush apparatus is applied, wherein the at least one AI model is dynamically modifiable;
• and
• at least one processor configured to:
• determine an electrical input power consumed by the cordless vacuum cleaner and determine a suction power of the suction motor based on the electrical input power,
• modify at least one parameter of the at least one AI model stored in the memory based on the determined suction power of the suction motor,
• determine the flow path pressure through the pressure sensor,
• determine the electrical load of the brush apparatus through the load detection sensor,
• identify a current type of floor by applying the flow path pressure and the electrical load of the brush apparatus to the at least one AI model having the modified at least one parameter, and
• adjust the suction power of the suction motor, based on the current type of floor identified by the at least one AI model having the modified at least one parameter.