Method and system for controlling rotation of cranes

The present invention provides a method and system for a crane slewing control to solve the prior art lifting heavy kinetic energy have a greater impact on the stability of the crane problem. The method comprising: determining Slewing during lifting the rotary acceleration of heavy or rotary force; the case where the rotation acceleration is greater than the swivel acceleration preset value, or the force by default value in the rotation force greater than a rotation next, reducing the rotational speed of the swing motor at the preset time period the swing acceleration of the crane is reduced. According to the present invention of, it helps to avoid the effects of lifting the weight of the kinetic energy of the overall stability of the crane or the local stability of disruption of resistance.