Patent ID: 7594487
Filing Date: 2009-09-29
Classification: F01L,F02D,Y02T

Abstract:
1. An apparatus for controlling a motion mechanism, which is configured to move a movable member by an actuator, the apparatus comprising: a stopper which restricts a movable range of the movable member; a position sensor for outputting a signal in response to a position of the movable member; a control unit that determines a manipulated variable for the actuator in response to a position of the movable member, which is detected based on the signal from the position sensor, to output the determined manipulated variable; a reference position detecting unit that forcibly operates the actuator to move the movable member toward a reference position at which a movement of the movable member is restricted by the stopper, to detect the signal from the position sensor at the reference position; and a correcting unit that corrects control by the control unit based on the signal from the position sensor at the reference position, wherein the reference position detecting unit restricts the manipulated variable for the actuator based on a limit value when the movable member is moved toward the reference position, and wherein the reference position detecting unit restricts the manipulated variable for the actuator according to the limit value, and also restricts a moving speed of the movable member to a predetermined speed or less, when the movable member is moved toward the reference position.