Patent ID: 8434303

Claim:
A shape memory alloy driving device, comprising: a movable portion; a moving mechanism portion which includes a shape memory alloy member, and moves the movable portion; a restraining member which is contactable with the movable portion to thereby restrain a movement of the movable portion, and defines a moving range of the movable portion; a drive control section which outputs a drive signal in accordance with an instruction value for positioning the movable portion to the shape memory alloy member, and controls the moving mechanism portion to move the movable portion by deforming the shape of the shape memory alloy member; a contact detecting section which detects whether the movable portion is positioned to a contact position in contact with the restraining member; a storing section which stores initial position information for determining a relation between a position of the movable portion and an instruction value in an initial state; a correcting section which calculates an actual standby instruction value, based on an actual contact instruction value obtained when the contact detecting section has detected that the movable portion is positioned to the contact position, and the initial position information; and a setting section which sets a standby position corresponding to the actual standby instruction value, as an actual standby position of the movable portion.