A method for controlling an AI apparatus mounted on home appliance, the method comprising: receiving a sound signal at a predetermined time; removing noises of the received signal and separating the signal from which the noises are removed, into a signal by a user and a device signal; acquiring a result value outputted by an AI model by inputting the separated signal to the AI model using a multi-class separation; and executing a sleep mode of the home appliance and outputting a sleep mode switch notice when the result value is a user sleep, and requesting a feedback from the user when the result value is an unclear signal and updating the AI model using the feedback.