A decentralized vibration control algorithm for large-scale engineering structures

作者：Lei Ying^*; Wu De Ting; Liu Zhong Hua

来源：Journal of Vibration Engineering, 2012, 25(4): 411-417.

• Decentralized vibration control
• Instantaneous optimal control
• Kalman estimator
• Least square estimation
• Sub-structures

In this paper, a decentralized vibration control algorithm is proposed for large-scale engineering structures utilizing the instantaneous optimal control scheme. Based on finite element model, a large-scale structure is divided into small size substructures. Interconnection forces between adjacent substructures are considered as "additional unknown disturbances" to the substructures. A computational algorithm based on sequential application of Kalman estimator for the state vector and least-square estimation for the "additional unknown disturbances" in each substructure, respectively is developed. The optimal control forces are determined by the instantaneous optimal control scheme. The proposed decentralized vibration control algorithm is applied to the ASCE 20-story control benchmark building under earthquake excitation and compared with the conventional centralized vibration control approach. It is demonstrated that the proposed decentralized vibration control algorithm provides satisfactory control performances. Thus, the proposed decentralized control algorithm is suitable for the vibration control of large-scale engineering structures.

• 出版日期2012
• 单位厦门大学