【摘要】：復(fù)雜網(wǎng)絡(luò)在自然界中和現(xiàn)代社會中無處不在,很多現(xiàn)實生活中的系統(tǒng)都可以以復(fù)雜網(wǎng)絡(luò)的模型建模,在過去的幾十年里,在理學(xué)和工程學(xué)的各個領(lǐng)域,復(fù)雜網(wǎng)絡(luò)的同步控制問題掀起了研究熱潮。而故障的發(fā)生則可能導(dǎo)致系統(tǒng)性能下降,不穩(wěn)定,甚至災(zāi)難性事故。因此,能夠使系統(tǒng)在故障發(fā)生時仍能保持穩(wěn)定,正常運行,完成既定目標(biāo)的容錯控制引起了廣泛的關(guān)注。復(fù)雜網(wǎng)絡(luò)結(jié)構(gòu)復(fù)雜,對系統(tǒng)的可靠性要求很高,復(fù)雜網(wǎng)絡(luò)的容錯同步控制研究具有重大的意義。然而,迄今為止,復(fù)雜網(wǎng)絡(luò)的容錯同步控制仍是一個全新的領(lǐng)域,尚未有其他研究人員發(fā)表相關(guān)研究成果。本課題來源于國家自然科學(xué)基金項目,分別針對非線性系統(tǒng),也就是,耦合不可重構(gòu)的復(fù)雜網(wǎng)絡(luò),和非線性切換系統(tǒng),也就是,耦合可重構(gòu)的復(fù)雜網(wǎng)絡(luò),進行容錯同步控制的研究。首先,這篇論文介紹了復(fù)雜網(wǎng)絡(luò)和容錯控制的研究現(xiàn)狀,包括與復(fù)雜網(wǎng)絡(luò)相似的其他多個體組成的網(wǎng)絡(luò),如神經(jīng)網(wǎng)絡(luò)等的容錯控制研究成果。文中著重介紹了像復(fù)雜網(wǎng)絡(luò)系統(tǒng)這樣,由多個體組成的系統(tǒng),所應(yīng)用的容錯控制思想,和容錯控制方法�；谇叭说难芯砍晒�,提出了相關(guān)容錯控制方法策略,本文的主要研究成果如下:(1)針對一類線性耦合,耦合不可重構(gòu)的復(fù)雜網(wǎng)絡(luò),提出了故障估計和故障調(diào)節(jié)一體化策略。首先設(shè)計了一系列分布式自適應(yīng)觀測器,用以同時獲得系統(tǒng)狀態(tài)和系統(tǒng)故障的信息。然后,基于自適應(yīng)觀測器獲得的信息,設(shè)計了分散式故障調(diào)節(jié)方案,用以鎮(zhèn)定整個復(fù)雜網(wǎng)絡(luò)系統(tǒng)。最后,由多個單連桿機械臂組成的復(fù)雜網(wǎng)絡(luò)模型做出仿真,驗證了所提出的容錯控制方法的有效性。(2)針對一類耦合可重構(gòu)的復(fù)雜網(wǎng)絡(luò)(耦合拓?fù)浣Y(jié)構(gòu)時變),設(shè)計了容錯協(xié)同控制策略。首先,文中基于領(lǐng)域規(guī)則,設(shè)計了線性協(xié)同控制律,并且提出了復(fù)雜網(wǎng)絡(luò)實現(xiàn)同步的充分條件。然后,文中提出了協(xié)同容錯控制思想和相應(yīng)的協(xié)同容錯控制方法,使復(fù)雜網(wǎng)絡(luò)系統(tǒng)在故障存在的情況下,仍然可以完成同步控制。最后,由多個單連桿機械臂組成的復(fù)雜網(wǎng)絡(luò)模型做出仿真,證明了文中所提出的協(xié)同容錯控制方法的有效性。
[Abstract]:Complex networks are ubiquitous in nature and modern society. Many real-life systems can be modeled by complex networks. In the past few decades, synchronization control of complex networks has been a hot topic in various fields of science and engineering. Therefore, fault-tolerant control, which can keep the system stable, run normally and accomplish the set goal when the fault occurs, has attracted wide attention. The complex network structure is complex and the reliability of the system is very high. The research on fault-tolerant synchronization control of complex network is of great significance. So far, the fault-tolerant synchronization control of complex networks is still a new field, and no other researchers have published relevant research results. Firstly, this paper introduces the research status of complex networks and fault-tolerant control, including fault-tolerant control of networks composed of many other bodies similar to complex networks, such as neural networks. Based on the previous research results, the relevant fault-tolerant control strategies are proposed. The main research results of this paper are as follows: (1) For a class of linear coupled, coupled and non-reconfigurable complex networks, an integrated strategy of fault estimation and fault regulation is proposed. Firstly, a series of distributed control strategies are designed. Then, based on the information obtained by the adaptive observer, a decentralized fault regulation scheme is designed to stabilize the whole complex network system. Finally, a complex network model composed of multiple single-link manipulators is simulated to verify the proposed fault-tolerant control. (2) A fault-tolerant cooperative control strategy is designed for a class of coupled reconfigurable complex networks (with time-varying topology). Firstly, based on domain rules, a linear cooperative control law is designed, and sufficient conditions for synchronization of complex networks are proposed. Then, the idea and phase of cooperative fault-tolerant control are proposed. The corresponding cooperative fault-tolerant control method enables the complex network system to complete synchronous control even when the fault exists. Finally, the simulation of a complex network model composed of multiple single-link manipulators proves the effectiveness of the proposed cooperative fault-tolerant control method.
【學(xué)位授予單位】：南京航空航天大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：O157.5;TP273

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