本文關(guān)鍵詞：基于混合邏輯動(dòng)態(tài)模型的拉索振動(dòng)控制分析　出處：《重慶交通大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

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【摘要】：橋梁中的斜拉索結(jié)構(gòu)由于自身具有質(zhì)量小、阻尼低、柔性大的特點(diǎn)，在各種激勵(lì)下，極易發(fā)生大幅振動(dòng)。這種振動(dòng)會(huì)對(duì)橋梁的施工、正常使用和運(yùn)營(yíng)帶來(lái)較大安全隱患，因此對(duì)斜拉索振動(dòng)形式及振動(dòng)機(jī)理的研究變得非常重要。 本文考察了被動(dòng)粘滯型、主動(dòng)型和半主動(dòng)型等三種阻尼器，重點(diǎn)是半主動(dòng)控制阻尼器，它可以提供任何所需要的耗散力達(dá)到減振的效果。要評(píng)價(jià)半主動(dòng)阻尼器控制技術(shù)，則有必要將半主動(dòng)控制阻尼器與被動(dòng)線性粘滯型阻尼器的減振效果進(jìn)行比較。同時(shí)，主動(dòng)控制代表著控制系統(tǒng)所能達(dá)到的最優(yōu)性能，，所以，也將半主動(dòng)阻尼器與主動(dòng)控制阻尼器進(jìn)行了比較。 在對(duì)拉索阻尼器三種控制方法分析的基礎(chǔ)上，通過(guò)引入輔助變量，分別建立了拉索阻尼器系統(tǒng)被動(dòng)控制、主動(dòng)控制和半主動(dòng)控制的混合邏輯動(dòng)態(tài)模型。仿真結(jié)果表明，該模型可以很好地反映拉索系統(tǒng)振動(dòng)過(guò)程的動(dòng)態(tài)特性，在數(shù)值上MLD模型與狀態(tài)空間模型幾乎達(dá)到一致，證明了MLD模型的有效性。而MLD模型的優(yōu)越性表現(xiàn)在：①使用HYSEDL語(yǔ)言后，在系統(tǒng)的建模方面更加的標(biāo)準(zhǔn)化、模塊化，有利于大型系統(tǒng)的開(kāi)發(fā)。②在數(shù)值模擬運(yùn)算時(shí)間上，MLD模型耗時(shí)短，提高了大型復(fù)雜的系統(tǒng)的運(yùn)算效率。 在此研究基礎(chǔ)上，將混雜系統(tǒng)的MLD模型的建模方法應(yīng)用到了依托工程瓊州海峽大橋典型斜拉索的風(fēng)振控制上。 首次推導(dǎo)了橋梁拉索結(jié)構(gòu)的混雜系統(tǒng)控制理論，提出了基于混合邏輯動(dòng)態(tài)（MLD）模型、半主動(dòng)控制元件和非狀態(tài)依賴邏輯事件（人工智能）的拉索結(jié)構(gòu)振動(dòng)混雜控制技術(shù)的關(guān)鍵算法。該理論和關(guān)鍵算法為具有非狀態(tài)依賴離散事件（人工智能）的結(jié)構(gòu)復(fù)雜非線性振動(dòng)控制提供了統(tǒng)一的數(shù)學(xué)方法，對(duì)提高土木工程結(jié)構(gòu)的系統(tǒng)控制能力、水平和安全性具有重要意義，對(duì)于土木工程在高層次上與電力、汽車、工業(yè)自動(dòng)化等行業(yè)安全控制領(lǐng)域的跨學(xué)科融合具有重大的應(yīng)用價(jià)值。
[Abstract]:Because of its small mass, low damping and large flexibility, the cable-stayed structure in the bridge is easy to occur large vibration under various excitations. This kind of vibration will be used in the construction of the bridge. Normal use and operation bring great hidden trouble to safety, so it is very important to study the vibration form and vibration mechanism of stay cable. In this paper, three kinds of dampers, passive viscous, active and semi-active, are investigated, with emphasis on semi-active control dampers. It can provide any needed dissipation force to achieve the effect of vibration absorption. The semi-active damper control technology should be evaluated. It is necessary to compare the effect of semi-active control damper and passive linear viscous damper. At the same time, active control represents the optimal performance of the control system, so. The semi-active damper and the active control damper are also compared. Based on the analysis of three control methods of cable damper, the passive control of cable damper system is established by introducing auxiliary variables. Hybrid logic dynamic model of active control and semi-active control. The simulation results show that the model can well reflect the dynamic characteristics of cable system vibration process. Numerically, the MLD model is almost consistent with the state space model, which proves the validity of the MLD model, while the superiority of the MLD model is shown by the use of HYSEDL language in the case of the MLD model. The modeling of the system is more standardized and modularized, which is beneficial to the development of large scale system. 2. In numerical simulation, MLD model takes less time and improves the computational efficiency of large and complex system. Based on this research, the modeling method of MLD model of hybrid system is applied to wind vibration control of typical stayed cables of Qiongzhou Strait Bridge. The hybrid system control theory of bridge cable structure is derived for the first time, and a hybrid logic dynamic MLD-based model is proposed. Key algorithms for hybrid vibration control of cable structures with semi-active control elements and non-state dependent logical events (AI). The theory and key algorithms are discrete events with non-state dependence (AI). A unified mathematical method for complex nonlinear vibration control is provided. It is of great significance to improve the system control ability, level and safety of civil engineering structure, for civil engineering in high level with electric power, automobile. The cross-disciplinary integration of industrial automation and other fields of safety control has great application value.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U448.27;U441.3

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

1 李金海;關(guān)新春;劉敏;歐進(jìn)萍;;斜拉索磁流變液阻尼器半主動(dòng)振動(dòng)控制系統(tǒng)的設(shè)計(jì)與應(yīng)用[J];功能材料;2006年05期

2 王修勇,陳政清中南大學(xué) ,倪一清;斜拉橋拉索風(fēng)雨振觀測(cè)及其控制[J];土木工程學(xué)報(bào);2003年06期

相關(guān)博士學(xué)位論文 前1條

1 姜南;應(yīng)用MR阻尼器的相鄰建筑地震反應(yīng)半主動(dòng)控制理論與試驗(yàn)研究[D];天津大學(xué);2008年

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