Patent ID: 8818649
Filing Date: 2014-08-26
Classification: E02F,H02P

Abstract:
1. A swing control system for a working machine having an upperstructure, working equipment attached to the upperstructure, a swing motor for rotating the upperstructure, a drive unit for driving the swing motor, and a swing control device for outputting a target rotation speed for the swing motor, said target rotation speed corresponding to a control stroke of the swing control device, said swing control system being arranged on the working machine and being provided with an actual rotation speed sensor for sensing an actual rotation speed of the swing motor and a control unit for controlling a drive torque of the drive unit such that a difference between the target rotation speed outputted from the swing control device and the actual rotation speed outputted from the actual rotation speed sensor is reduced to zero, the swing control system comprising: a correction device for correcting the target rotation speed, which has been outputted from the swing control device, based on a drive torque of the drive unit as corrected according to at least one of a work posture of the working equipment and a work load on the working equipment, wherein