Rotation control device of work machine and work machine equipped with same
AssigneeKobelco Construction Machinery Co., Ltd.
InventorMasaki Okubo
Life of this patent
Estimating the term…
Abstract
A slewing control device is used for a crane that includes an upper slewing body, a lower travelling body, a slewing drive unit, and an attachment. A controller in the slewing control device enables the slewing drive unit to operate based on feedforward control to slew the upper slewing body at a target slewing speed. The controller generates a corrected command signal by correcting a reference command signal set in advance in response to a predetermined target slewing speed, based on information about a variation factor causing the slewing speed to vary. The controller inputs the corrected command signal to the slewing drive unit.
Claims15
A slewing control device for a work machine, the slewing control device being used for the work machine including:
- a lower body;
- an upper slewing body supported by the lower body so as to be slewable;
- a slewing drive unit to slew the upper slewing body through driving force according to amplitude of an input command signal;
- and
- an attachment supported by the upper slewing body so as to be pivotable in a derricking direction,
- wherein the slewing control device comprises a controller to enable the slewing drive unit to operate based on feedforward control to slew the upper slewing body at a predetermined target slewing speed, the controller being configured to generate a corrected command signal by correcting a reference command signal set in advance in response to the predetermined target slewing speed, based on information about a variation factor causing slewing speed to vary, the controller being configured to input the corrected command signal to the slewing drive unit.
Dependencies are inferred from the claim text.