Curtain wall working modal parameter identification method and system based on MWTLMDS

• Main Authors: WANG CHENG, MA HAOLIN, LIAO JINJIE
• Format: Patent
• Language: Chinese; English
• Published: 06.09.2022
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention relates to an MWTLMDS-based curtain wall working modal parameter identification method and system, and the method comprises the steps: obtaining a vibration displacement response signal of a curtain wall in a preset time, and carrying out the interception of the vibration displacement response signal through a sliding window, and obtaining the interception data in the sliding window; representing the intercepted data in the sliding window with modal coordinates to obtain a modal shape of the curtain wall; applying a multi-dimensional scaling analysis method and transfer learning to the vibration displacement data intercepted in the sliding window to obtain a distance matrix; introducing a centralization matrix into the distance matrix of the sliding window to obtain a deformation matrix, performing eigenvalue and eigenvector decomposition, and applying a single-degree-of-freedom technology or Fourier transform to obtain modal inherent frequency of the curtain wall; and traversing all the sliding