【摘要】：在建筑抗震技術(shù)與理論不斷發(fā)展的過(guò)程中,結(jié)構(gòu)抗震試驗(yàn)技術(shù)具有舉足輕重的地位�，F(xiàn)代建筑結(jié)構(gòu)日趨大型化和復(fù)雜化,新型抗震設(shè)計(jì)理論、結(jié)構(gòu)構(gòu)造形式以及隔震與耗能減震技術(shù)的涌現(xiàn),為抗震試驗(yàn)技術(shù)提出了新的挑戰(zhàn)。實(shí)時(shí)混合試驗(yàn)由擬動(dòng)力試驗(yàn)發(fā)展而來(lái),能夠一定程度上解決原型結(jié)構(gòu)足尺試驗(yàn)以及率相關(guān)試件的試驗(yàn)驗(yàn)證問(wèn)題,自1992年被提出以來(lái)得到了快速發(fā)展。時(shí)滯問(wèn)題是實(shí)時(shí)混合試驗(yàn)的核心問(wèn)題。傳統(tǒng)時(shí)滯補(bǔ)償方法往往假定試驗(yàn)中時(shí)滯不變,然而加載系統(tǒng)的非線(xiàn)性以及試件性能的變化可能導(dǎo)致系統(tǒng)時(shí)滯變化,使得此類(lèi)方法性能不夠理想。針對(duì)變時(shí)滯實(shí)時(shí)混合試驗(yàn),本文提出了基于模型參數(shù)在線(xiàn)識(shí)別的自適應(yīng)時(shí)滯補(bǔ)償方法。該方法采用離散模型描述伺服系統(tǒng),通過(guò)在線(xiàn)參數(shù)估計(jì)確定系統(tǒng)狀態(tài),從而對(duì)伺服系統(tǒng)進(jìn)行在線(xiàn)時(shí)滯補(bǔ)償。本文的主要研究?jī)?nèi)容如下:(1)以自校正控制技術(shù)為基礎(chǔ),結(jié)合實(shí)時(shí)混合試驗(yàn)加載系統(tǒng)的簡(jiǎn)化離散模型,提出了基于加載系統(tǒng)離散模型參數(shù)在線(xiàn)識(shí)別的自適應(yīng)時(shí)滯補(bǔ)償方法,采用數(shù)值模擬評(píng)價(jià)了該方法在較大控制步長(zhǎng)實(shí)時(shí)混合試驗(yàn)中的補(bǔ)償效果。同時(shí),離散模型參數(shù)數(shù)目作為影響時(shí)滯補(bǔ)償效果的主要因素,分析了其在不同工況下對(duì)時(shí)滯補(bǔ)償效果的影響;(2)分析了較小加載控制步長(zhǎng)實(shí)時(shí)混合試驗(yàn)中,所提出的自適應(yīng)時(shí)滯補(bǔ)償方法效果變差的原因,并提出了相應(yīng)的改進(jìn)措施,使該時(shí)滯補(bǔ)償方法具有更加廣泛的適用范圍。同時(shí),針對(duì)不同的試驗(yàn)工況,評(píng)價(jià)了不同離散模型的改進(jìn)自適應(yīng)時(shí)滯補(bǔ)償方法的補(bǔ)償效果,驗(yàn)證了改進(jìn)后時(shí)滯補(bǔ)償方法的可行性;(3)建立了MTS-dSPACE實(shí)時(shí)混合試驗(yàn)的試驗(yàn)平臺(tái),規(guī)范了自適應(yīng)時(shí)滯補(bǔ)償實(shí)時(shí)混合試驗(yàn)的流程,并以鋼結(jié)構(gòu)柱的實(shí)時(shí)混合試驗(yàn)驗(yàn)證了本文提出的時(shí)滯補(bǔ)償方法。
[Abstract]:In the process of continuous development of building seismic technology and theory, structural seismic test technology plays an important role. With the increasing scale and complexity of modern building structures, the emergence of new seismic design theory, structural structure form and isolation and energy dissipation technology poses a new challenge to seismic test technology. Real-time hybrid test, developed from quasi-dynamic test, can solve the problem of full-scale test of prototype structure and test verification of rate-related specimens to a certain extent, and has been developed rapidly since it was put forward in 1992. The problem of time delay is the core problem of real-time hybrid test. The traditional time delay compensation methods often assume that the delay is invariant in the test, however, the nonlinear of the loading system and the change of specimen performance may lead to the change of time delay of the system, which makes the performance of this method not ideal. In this paper, an adaptive time delay compensation method based on-line identification of model parameters is proposed for real-time hybrid experiments with variable time delays. In this method, the discrete model is used to describe the servo system, and the state of the servo system is determined by on-line parameter estimation, so as to compensate the servo system for on-line time delay. The main contents of this paper are as follows: (1) based on the self-tuning control technology and the simplified discrete model of real-time hybrid test loading system, an adaptive time-delay compensation method based on-line identification of discrete model parameters of loading system is proposed, and the compensation effect of this method in real-time hybrid test with large control step is evaluated by numerical simulation. At the same time, the number of parameters of discrete model is the main factor affecting the effect of time delay compensation, and its influence on time delay compensation effect under different working conditions is analyzed. (2) the reason why the proposed adaptive time delay compensation method becomes worse in the real time hybrid test of small loading control step size is analyzed, and the corresponding improvement measures are put forward to make the time delay compensation method have a wider range of application. At the same time, according to different test conditions, the compensation effect of the improved adaptive time delay compensation method for different discrete models is evaluated, and the feasibility of the improved time delay compensation method is verified. (3) the test platform of MTS-dSPACE real time hybrid test is established, the flow of adaptive time delay compensation real time hybrid test is standardized, and the delay compensation method proposed in this paper is verified by the real time mixing test of steel structure columns.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TU317

【參考文獻(xiàn)】

相關(guān)期刊論文 前7條

1 趙剛;潘鵬;聶建國(guó);王宗綱;;基于力和位移混合控制的多自由度結(jié)構(gòu)擬靜力試驗(yàn)方法研究[J];土木工程學(xué)報(bào);2012年12期

2 蔡新江;田石柱;;振動(dòng)臺(tái)試驗(yàn)方法的研究進(jìn)展[J];結(jié)構(gòu)工程師;2011年S1期

3 周惠蒙;王濤;陳永盛;吳斌;;采用dSPACE控制的電液伺服試驗(yàn)加載系統(tǒng)[J];結(jié)構(gòu)工程師;2011年S1期

4 倪志偉;紀(jì)金豹;杜陽(yáng)陽(yáng);;擬動(dòng)力試驗(yàn)方法的發(fā)展與展望[J];災(zāi)害學(xué);2010年S1期

5 陳運(yùn)泰;;地震預(yù)測(cè):回顧與展望[J];中國(guó)科學(xué)(D輯:地球科學(xué));2009年12期

6 ;Internet-based collaborative pseudo-dynamic testing of multi-span bridge structure[J];Progress in Natural Science;2009年05期

7 凌賢長(zhǎng);;E-Defense建設(shè)與相關(guān)研究[J];地震工程與工程振動(dòng);2008年04期

相關(guān)博士學(xué)位論文 前4條

1 王貞;實(shí)時(shí)混合試驗(yàn)的控制和時(shí)間積分算法[D];哈爾濱工業(yè)大學(xué);2012年

2 許國(guó)山;實(shí)時(shí)子結(jié)構(gòu)試驗(yàn)的等效力控制方法[D];哈爾濱工業(yè)大學(xué);2010年

3 王大鵬;遠(yuǎn)程協(xié)同結(jié)構(gòu)擬動(dòng)力試驗(yàn)方法與技術(shù)研究[D];哈爾濱工業(yè)大學(xué);2010年

4 王倩穎;實(shí)時(shí)子結(jié)構(gòu)試驗(yàn)方法及其應(yīng)用[D];哈爾濱工業(yè)大學(xué);2007年

相關(guān)碩士學(xué)位論文 前2條

1 寧西占;實(shí)時(shí)混合試驗(yàn)的H_∞控制[D];哈爾濱工業(yè)大學(xué);2013年

2 劉進(jìn)進(jìn);近完全時(shí)滯補(bǔ)償方法及其在實(shí)時(shí)混合試驗(yàn)中的應(yīng)用[D];哈爾濱工業(yè)大學(xué);2013年

，

本文編號(hào)：2501047