Method and system for representing operation stability of slewing mechanism of tower crane

The invention relates to the technical field of intelligent monitoring of building machinery, and provides a characterization method and system for operation stability of a slewing mechanism of a tower crane. The method comprises the steps that a relative coordinate system is established, and a tower crane tower body top end space position point set of the relative coordinate system is obtained at intervals; establishing a two-dimensional coordinate system according to the tower body top end space position point set of the tower crane, and obtaining a distribution map of the tower body top end space position point set of the tower crane in the coordinate system; according to the distribution map, calculating the space displacement of the top end of the tower body of the tower crane between two adjacent sampling points to obtain a space displacement change curve so as to calculate the space angular displacement change rate of the two adjacent sampling points; according to the space angular displacement change