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張路， 朱炳寅
（中國建筑設(shè)計研究院，北京 100044）[摘要] 作者自行設(shè)計的阻尼力雙向調(diào)節(jié)的MR阻尼器由于其自身的結(jié)構(gòu)特點，具備特殊的三狀態(tài)出力特性?；谏鲜鎏匦?，結(jié)合一實尺三層鋼框架結(jié)構(gòu)數(shù)值模型研究了阻尼器各出力狀態(tài)的選取方法，并對控制效果進(jìn)行了比較分析。研究結(jié)果表明：合理選擇最大出力狀態(tài)可以在阻尼器有限出力條件下盡可能提升系統(tǒng)的半主動最優(yōu)控制效果；合理選擇中等出力狀態(tài)能夠有效提升控制系統(tǒng)在零電流狀態(tài)的被動控制效果，獲得優(yōu)異的故障安全( fail-safe)性能。
[關(guān)鍵詞] 磁流變阻尼器；阻尼力；雙向調(diào)節(jié)；故障安全性能；出力狀態(tài)
中圖分類號：TU352 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2011) Sl-0170-04State design method of output powers based on new MR damper
Zhang Lu, Zhu Bingyin
( China Architectural Design & Research Group, Beijing 100044, China)Abstract: Because of the structural character of MR damper with bidirectional adjusting damping force which is designed by the author, there are three states of output powers of the damper. Based on this character, the methods of choosing states of output powers were studied and the control results were compared and analyzed conjunction with aactual size steel-frame construction with three floors. It is shown that the semi-active control results may be improved with limited value of damping force of the damper if the maximal state of output powers is reasonably selected; the passive control results with zero current may be improved and excellent fail-safe property can be obtained if the medium state of output powers is reasonably selected.
Keywords: magnetorheological (MR) damper; damping force; bidirectional adjustment; fail-safe property; states of output powers
