安裝磁流變阻尼器控制系統(tǒng)的控制效果分析*
張海為1， 程亞鵬2， 林慶立1
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張海為1， 程亞鵬2， 林慶立1(1機械工業(yè)第九設(shè)計研究院，長春130011; 2哈爾濱工業(yè)大學(xué)建筑設(shè)計研究院，哈爾濱150090)[摘要] 磁流變阻尼器控制系統(tǒng)在工程抗震中的推廣和應(yīng)用還有許多問題需要解決，本文力圖在安裝該控制系統(tǒng)的抗震設(shè)計方法方面做一些工作。首先在總結(jié)磁流變阻尼器的力學(xué)模型及工作原理的基礎(chǔ)上，提煉出振動控制設(shè)計需要的力學(xué)參數(shù)。應(yīng)用經(jīng)典線性最優(yōu)控制算法對結(jié)構(gòu)受控方程進行分析，從振動控制本質(zhì)出發(fā)，給出了磁流變阻尼器控制系統(tǒng)的5種控制方法。采用本文提出的庫侖可調(diào)控制律，結(jié)合具體工程算例對不同控制方法進行了控制效果分析和比較，發(fā)現(xiàn)只有連續(xù)可調(diào)控制才能在不放大結(jié)構(gòu)的絕對加速度的條件下，具有較好的層間位移控制效果。[關(guān)鍵詞] 磁流變阻尼器；開關(guān)控制；峰值可調(diào)控制；控制效果中圖分類號：TU352.1 文獻標識碼：A 文章編號：1002-848X(2012) S2-0342-05Analysis on control effect with magnetorheological damper control systemZhang Haiwei1, Cheng Yapeng2, Lin Qingli1(1 MMI Planning & Engineering Institute Ⅸ,Changchun 130011, China; 2 Institute of Architectural Design and Research, Harbin Institute of Technology, Harbin 150090, China)Abstract: The development and application of MRD control system in seismic design still have a lot of problems to be solved. This paper mainly deals with seismic design methods of control system. Firstly, based on the summarization of MRD's damping force model and its working principle, the mechanical parameters for vibration control are extracted. Implementing the LQR controllaw the controlled structural equation is analyzed. From the view of control essence, five control methods of MRD control system are introduced. Employing the Kulun adjustable control law presented by the thesis, different control methods are applied to the actual structure. The conclusion that only the continuous adjustable control method can decrease the relative drift on condition that the absolute acceleration can't increase is drawn.Keywords: magnetorheological dampers; on-off control; peak regulating control; material nonlinear, control effect
