基于半主動模糊控制的MR阻尼器結構減振數(shù)值模擬
[Abstract]:The seismic design of building structures under earthquake should not only be limited to the study of materials to improve seismic performance, but also should be carried out by more active means. However, the exact value of earthquake excitation and the exact model of building structure can not be obtained under the present scientific and technological means, so it is necessary to establish a control method independent of the exact model to weaken the seismic response of the structure. Fuzzy control is an effective way to solve this problem. It can simulate the thinking mode of human brain and only control the input and output variables based on expert experience in advance. Therefore, fuzzy control does not need the precise model of controlled structure, but only needs a proper actuator to play a better control effect. It is an effective and relatively low cost active seismic method to change the stiffness and damping of the original structure by using the damper as an actuator output control force to change the stiffness and damping of the original structure during the earthquake. Magnetorheological fluid (MRF) has been developed as a smart material for decades. The derived MRF (MR) damper has been widely used in various fields of structural vibration reduction due to its advantages of fast response low power consumption and continuous adjustable large damping force. However, the dynamic model of MR damper has strong nonlinearity. It is a key technology to establish an appropriate constitutive model of MR damper and effective control strategy. The semi-active control method adopted in this paper has the advantages of strong active control effect, low cost of passive control and simple setting. Combined with MR damper and fuzzy control, the seismic response of building structure can be significantly reduced. Therefore, the main contents of this paper are as follows: 1. The advantages and disadvantages of semi-active control and other control methods are analyzed, and the principle of selecting constitutive relation of MR damper and the key principle of fuzzy controller design are expounded. 2. The flow of modeling and simulation. 2. In the MATLAB software, the Simulink platform has designed and written a general shearing valve MR damper program based on Bouc-Wen and used in the fifth chapter of the simulation example. 3. A fuzzy controller with trapezoid membership function and Gao Si membership function is designed under the original interface (m file) and Simulink platform of MATLAB software. A fuzzy vibration reduction rule base under semi-active control is developed and applied to the simulation example in chapter 5. According to the controlled results, when the inner product is close, different membership functions have little effect on the control effect of fuzzy control. In order to simulate an example, a state equation of a three-layer steel frame is established in this paper. It is inputted into the state space of the simulation model of Simulink platform, combined with the different fuzzy controllers designed, and the Wilson- 胃 time-history analysis method is used under the excitation of natural seismic wave. The peak value and peak control rate of each dynamic parameter of the controlled structure are compared. The conclusion is that the semi-active control system has good damping effect and can control the vibration response of the structure in real time and efficiently. It has certain engineering practical significance and reference value.
【學位授予單位】:昆明理工大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:TU352.1
【參考文獻】
相關期刊論文 前10條
1 胡財寶;丁建國;;基于模糊控制的MR阻尼器在結構抗震中的應用研究[J];世界地震工程;2014年04期
2 趙慕楠;單光成;;高層鋼結構建筑房屋抗震設計要點[J];門窗;2014年11期
3 陳旭;李建中;;結構動力分析中Rayleigh阻尼合理取值研究[J];結構工程師;2013年05期
4 李忠獻;呂楊;徐龍河;丁陽;;應用MR阻尼器的混合結構非線性地震損傷控制[J];土木工程學報;2013年09期
5 杜林平;孫樹民;;磁流變阻尼器在結構振動控制中的應用[J];噪聲與振動控制;2011年02期
6 王鴻云;鄭惠強;李泳鮮;;磁流變液的研究與應用[J];機械設計;2008年05期
7 周星德;徐艷紅;;建筑結構STMD參數(shù)優(yōu)化研究[J];應用力學學報;2007年03期
8 趙大海;李宏男;;采用模糊邏輯的半主動摩擦阻尼器對偏心結構的振動控制[J];振動工程學報;2007年02期
9 楊樝;歐進萍;;導管架式海洋平臺磁流變阻尼隔震結構的模型試驗[J];振動與沖擊;2006年05期
10 黃慶豐,王全鳳,胡云昌;Wilson-θ法直接積分的運動約束和計算擾動[J];計算力學學報;2005年04期
相關會議論文 前1條
1 譚平;閻維明;周福霖;;主動變剛度控制系統(tǒng)的瞬時最優(yōu)控制算法[A];第七屆全國結構工程學術會議論文集(第Ⅲ卷)[C];1998年
相關博士學位論文 前2條
1 寧響亮;結構振動控制的多目標優(yōu)化和智能模糊控制[D];哈爾濱工業(yè)大學;2010年
2 李江;高層建筑結構振動半主動控制系統(tǒng)研究[D];天津大學;2003年
相關碩士學位論文 前9條
1 劉苗苗;基于壓電變摩擦阻尼器的半主動優(yōu)化控制研究[D];西安建筑科技大學;2012年
2 孟憲宗;地震作用下累積效應對鋼筋混凝土框架結構的影響[D];大連理工大學;2013年
3 朱曉輝;MR阻尼器用于電視塔結構風振控制的研究[D];武漢理工大學;2004年
4 張巍;MR-TMD半主動控制研究及其應用[D];天津大學;2003年
5 鄒鵬;模糊控制在結構振動控制中的應用[D];大連理工大學;2006年
6 胡杰輝;磁流變阻尼半主動控制系統(tǒng)研究[D];浙江大學;2007年
7 鄧林;基于磁流變阻尼器的建筑結構地震反應模糊控制[D];廣西大學;2008年
8 胡嘉熙;應用MR阻尼器的毗鄰結構地震反應半主動與模糊控制[D];天津大學;2007年
9 周楊;震后城市路網(wǎng)可靠性研究[D];石家莊鐵道大學;2016年
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