AMD low-dimensional controller design considering structural high modes information

作者：Teng, Jun; Chen, Chao-Jun; Xing, Hou-Bing; Lu, Wei

来源：Journal of Vibration Engineering, 2016, 29(6): 1048-1056.

DOI：10.16385/j.cnki.issn.1004-4523.2016.06.014

• Balanced truncation
• Balanced truncation method
• Controlled structure modeling
• Dimensionality
• Dimensionality reduction
• Low dimensional structure
• Pole assignment
• Reduced structural models

To reduce the influence of AMD control system's time delay, the dimensionality of controlled structure model is needed to reduce. However, structural information which is corresponded to system's small characteristic values is directly abandoned in the process of dimensionality reduction, and the low-dimensional structure will lack high modes and other information of original structure. That is to say, the process becomes inaccurate and thus the design of the controller will be influenced. Based on the balanced truncation method and pole assignment algorithm, the low-dimensional controller is designed and the discarded structural information which includes the natural frequencies, damping ratios and modes information of the original structure is reconsidered. In addition, in order to reduce the effect of the inaccuracy at the design stage, part of information which will affect the pole position of the system is considered before performing the pole. The ten-story structure is taken as an example, in which the system control effect, the peak force and peak schedule of AMD are used as the control indexes to analyzes the effects on dimensionality of reduced structural model to the improved low-dimensional controller. Furthermore, the four-layer experimental frame's AMD control system is taken as an example to test the conclusions.

• 出版日期2016-12-1