A control apparatus includes driving means for rotationally driving a predetermined mechanism, braking means for braking the driving means by pressing a pressing unit against a rotation unit of the driving means, and control means for, in order to change rotation position of the predetermined mechanism, controlling the driving means in a braking release period in which the pressing unit is returned to a predetermined position to temporarily maintain the rotation position of the predetermined mechanism, and then driving the predetermined mechanism to thereby change the rotation position. The control apparatus performs at least one of notification to the user, braking of the predetermined mechanism, and stopping of the driving means when a command time for the driving means at the time of temporarily maintaining the rotation position of the predetermined mechanism is longer than or equal to a predetermined time.

An abnormality factor identification apparatus includes a sensor signal obtaining unit that obtains sensor signals associated with the physical state of a machine, an operating state determination unit that determines operating states of the machine based on information obtained from the machine, an abnormality level calculation unit that calculates the abnormality levels of the sensor signals for each operating state of the machine determined by the operating state determination unit, and a factor identification unit that determines a factor in an abnormality in the machine from historical data being a series of the abnormality levels for each operating state.

A control apparatus includes driving means for rotationally driving a predetermined mechanism, braking means for braking the driving means by pressing a pressing unit against a rotation unit of the driving means, and control means for, in order to change rotation position of the predetermined mechanism, controlling the driving means in a braking release period in which the pressing unit is returned to a predetermined position to temporarily maintain the rotation position of the predetermined mechanism, and then driving the predetermined mechanism to thereby change the rotation position. The control apparatus performs at least one of notification to the user, braking of the predetermined mechanism, and stopping of the driving means when a command time for the driving means at the time of temporarily maintaining the rotation position of the predetermined mechanism is longer than or equal to a predetermined time.

An abnormality factor identification apparatus includes a sensor signal obtaining unit that obtains sensor signals associated with the physical state of a machine, an operating state determination unit that determines operating states of the machine based on information obtained from the machine, an abnormality level calculation unit that calculates the abnormality levels of the sensor signals for each operating state of the machine determined by the operating state determination unit, and a factor identification unit that determines a factor in an abnormality in the machine from historical data being a series of the abnormality levels for each operating state.