Patent ID: 8473165

Claim:
A turning drive control apparatus that controls a drive of a turning mechanism of a construction machine driven to turn by an electric motor, comprising: a drive command creation part configured to create a drive command to drive said single electric motor based on an amount of operation input through an operation part of the construction machine; a turning motion detection part configured to detect a turning motion of said turning mechanism; and a drive command correction part configured to retain a plurality of different output characteristics corresponding to turning directions with respect to said single electric motor, wherein said drive command correction part outputs a correction command based on one of the output characteristics to correct said drive command, when a turning motion in a direction opposite to a turning operation direction input to said operation part is detected by said turning operation direction in response to a degree of the turning motion in the direction opposite to the turning operation direction, and wherein the output characteristics retained by said drive command correction part includes an output characteristic that maintains said drive command created by said drive command creation part when a turning direction input to said operation part is coincident with a turning direction detected by said turning motion detection part.