模型结构的磁流变阻尼减振控制试验研究-oalib.pdfVIP

23 10 Vol.23 No.10 2006 10 Oct. 2006 ENGINEERING MECHANICS 125 1000-4750(2006)10-0125-07 ∗ 1,3 2 2 (1. , 100084; 2. , 150090; 3. , 100022) MTS 793 H ∞ Passive-off Passive-on Passive-off Passive-on Passive-off H ∞ TU311.3 A EXPERIMENTAL STUDY OF MODEL STRUCTURE WITH MAGNETORHEOLOGICAL DAMPER *ZHANG Wei-jing1,3, TIAN Shi-zhu2 , OU Jin-ping2 (1. Tsinghua University; Beijing 100084, China; 2. Harbin Institute of Technology, Harbin, Heilongjiang 150090, China 3. Beijing University of Technology, Beijing 100022, China) Abstract: Magnetorheological (MR) damper performance experiments were conducted. Based on the MTS 793 software system, shaking table tests of a five-story steel frame model with two different MR dampers were carried out using different control strategies, including two passive ones and some semi-active ones based on H ∞ static output feedback. The results experimentally demonstrated that the control system is effective for the five story model structure with all the control strategies. When off-state force corresponding to zero input current of MR damper was sufficiently large, MR damper in the case of on-stage almost does not move. When off-state force corresponding to zero input current of MR damper is small, the performance of MR device in the case of on-stage is superior to that of off-stage. The semi-active control system is not considerably more than the passive systems. Experimental results also show that MR damper must match the structure, which is particularly important for the semi-active seismic response control. Key words: structural