Patent attributes
A positioning method for positioning a movable member so as to maximize a detection output of a position detecting means whose detection output varies corresponding to positions of the movable member, comprising: performing a wobbling control when the detection output is small, in which the movable member is moved forward and backward by a predetermined minute amount, and the movable member is moved in proportion to a difference between the detection output when the movable member is moved forward by the predetermined minute amount and the detection output when the movable member is moved backward; and performing a hill climbing control when the detection output is large, in which the movable member is moved in one direction by only a predetermined adjustment amount and when the detection output increases, the movable member is moved again in an identical direction by the adjustment amount.
