STATE-CHANGING ELEMENT OPERATING DEVICE, RANGE CHANGING DEVICE FOR AUTOMATIC TRANSMISSION, AND PARKING APPARATUS

摘要

A state-changing element operating device (40) comprises a detent mechanism (50) for moving and positioning movable members (22, 33) of a state changing element (10), an actuator (60) for driving the detent mechanism (50), and a controller (5) for controlling the actuator (60). The controller (5) includes initial motion means (S1) for reducing the play in the rotation direction present in the actuator (60) by driving an electric motor (61) when changing the posture of the detent member (51) in response to a state change request of the state changing element (10) and management means (S2 to S5) for setting a target rotation angle of the electric motor (61) to the value which is the sum of the rotation angle necessary to change the posture of the detent member (51) responding to the request and the play in the rotation direction present in the coupling portion of the support shaft (52) and the output shaft (63) when the play is judged to be reduced.