Patent ID: 8912737

Claim:
A linear actuator driving device, comprising: an electromagnetic driving unit which makes a moving element reciprocate by carrying out energization in response to a driving command and; an offset correcting unit which corrects the driving command to carry out offset energization to make the center of reciprocation of the moving element be moved in the direction in which deviation between the center of reciprocation of the moving element and the center of a movement possible range is eliminated in a case in which, in a non-energized state, the moving element is displaced from the center of the predetermined movement possible range due to self weight and, therefore, a movable range is narrower than the movement possible range, wherein the offset correcting unit acquires amplitude information corresponding to an amplitude value of the moving element required for the reciprocation in response to the driving command and, if a movable amplitude with respect to an amplitude value corresponding to the acquired amplitude information is in a movable area insufficient condition, performs correction of the driving command and, on the other hand, if the movable amplitude is not in the movable area insufficient condition, releases correction of the driving command.