Drive device and method for controlling the drive device

A drive device comprising:

• a fixed frame on which one of a drive coil and a magnet facing the drive coil is disposed;
• a movable frame on which another one of the drive coil and the magnet is disposed and which is movable relative to the fixed frame;
• a detector that is disposed on one of the fixed frame and the movable frame on which the drive coil is disposed, and that detects and outputs a detection signal corresponding to a magnetic flux of the magnet;
• a noise signal calculation unit that calculates a noise signal corresponding to a magnetic flux generated from a current flowing through the drive coil;
• a signal correction unit that corrects the detection signal detected by the detector based on the noise signal;
• and
• a drive controller that controls, based on a corrected signal obtained from correction by the signal correction unit, a drive signal to be applied to the drive coil and that drives the movable frame to a position corresponding to the corrected signal,
• wherein
• from the detection signal detected by the detector when a drive signal, in which a high-frequency drive signal is superimposed on a drive current to drive the movable frame, is applied to the drive coil, the noise signal calculation unit acquires an amplitude of a predetermined frequency band including a frequency of the high-frequency drive signal, and calculates the noise signal included in the detection signal based on the acquired amplitude.