Rollable electronic device including gear assembly

A method for controlling an electronic device including a housing configured to be moved via a gear assembly including a first gear and a second gear, the method comprising:

• sensing, through at least one sensor, a signal related to a driving state of at least a portion of the gear assembly while the first gear and the second gear are driven;
• and
• based on the sensed signal, identifying whether at least one of the first gear or the second gear is deformed,
• wherein identifying whether the at least one of the first gear or the second gear is deformed includes identifying whether the at least one of the first gear or the second gear is deformed based on a change in a rotational speed of the at least one of the first gear or the second gear after detecting that the at least one of the first gear or the second gear is being driven.

An electronic device comprising:

• a housing including a first housing and a second housing, wherein the second housing is configured to receive at least a portion of the first housing, and the first housing is configured to move relative to the second housing;
• a display having a display area exposed to outside of the electronic device, wherein a size of the display area is configured to be extended or contracted based on a slide movement of the first housing;
• a motor disposed in the housing;
• a gear assembly configured to move the first housing, wherein the gear assembly includes a first gear connected to the motor and a second gear configured to mesh with the first gear;
• at least one sensor disposed in the housing and configured to detect a driving state of at least a portion of the gear assembly;
• and
• at least one processor operatively connected with the motor and the at least one sensor;
• memory storing instructions;
• wherein the instructions, when executed by the at least one processor individually or collectively, cause the electronic device to:
• sense, through the at least one sensor, a signal related to the driving state of at least the portion of the gear assembly while the first gear and the second gear are driven,
• identify whether at least one of the first gear or the second gear is deformed, and/or a position of deformation, based on the sensed signal, and
• control the display to display information indicating at least one of:
• (a) the identified presence and/or absence of deformation, and/or (b) the position of deformation.