本文關(guān)鍵詞： 網(wǎng)絡(luò)化控制系統(tǒng) 瞬時(shí)故障 故障傳播分析 系統(tǒng)知識(shí) 故障檢測(cè) 故障恢復(fù) 策略優(yōu)化 無線監(jiān)測(cè)控制系統(tǒng)　出處：《華中科技大學(xué)》2015年博士論文　論文類型：學(xué)位論文

【摘要】：網(wǎng)絡(luò)化的控制系統(tǒng)已經(jīng)成為現(xiàn)代控制系統(tǒng)的主要方式,其運(yùn)行安全受到了廣泛的關(guān)注。隨著系統(tǒng)規(guī)模變大和復(fù)雜程度提高,設(shè)計(jì)缺陷和外部擾動(dòng)引起的瞬時(shí)故障,已成為網(wǎng)絡(luò)化控制系統(tǒng)運(yùn)行安全的主要威脅。目前,針對(duì)網(wǎng)絡(luò)化控制系統(tǒng)瞬時(shí)故障,尚沒有系統(tǒng)化的有效控制方法。在此背景下,本文提出了以瞬時(shí)故障傳播分析為基礎(chǔ)的瞬時(shí)故障檢測(cè)和恢復(fù)及安全控制方法,利用基于本體論的系統(tǒng)建模知識(shí),建立以對(duì)象為中心的系統(tǒng)抽象層模型和以系統(tǒng)為中心的工作流模型,根據(jù)模型元素關(guān)系從兩個(gè)方面進(jìn)行瞬時(shí)故障傳播分析,并依據(jù)傳播影響及影響軌跡,建立層次化的多重故障檢測(cè)和故障恢復(fù)策略,使得在瞬時(shí)故障傳播影響的早期區(qū)域?qū)崿F(xiàn)故障檢測(cè)和恢復(fù)及安全控制,保障系統(tǒng)在瞬時(shí)故障影響下依然能滿足安全控制需求。本文的主要內(nèi)容概括如下： 首先,總結(jié)了網(wǎng)絡(luò)化控制系統(tǒng)瞬時(shí)故障致因及特性,分析了瞬時(shí)故障檢測(cè)和恢復(fù)及安全控制的需求,指出了瞬時(shí)故障恢復(fù)及安全控制關(guān)鍵技術(shù),并針對(duì)實(shí)現(xiàn)重難點(diǎn)進(jìn)行了討論,給出了基于系統(tǒng)監(jiān)測(cè)環(huán)節(jié)、瞬時(shí)故障傳播分析環(huán)節(jié)、瞬時(shí)故障檢測(cè)環(huán)節(jié)、瞬時(shí)故障恢復(fù)策略制定環(huán)節(jié)和恢復(fù)策略執(zhí)行環(huán)節(jié)構(gòu)成的瞬時(shí)故障恢復(fù)及安全控制閉環(huán)控制框架和結(jié)構(gòu)。 然后,針對(duì)現(xiàn)有瞬時(shí)故障傳播分析方法中傳播分析模型無法全面表達(dá)系統(tǒng)知識(shí)的不足,在瞬時(shí)故障傳播方式分析的基礎(chǔ)上,提出了基于全面系統(tǒng)知識(shí)的瞬時(shí)故障傳播分析方法。利用本體論建模知識(shí),建立了系統(tǒng)FBS (Function, Behavior and Structure)模型和工作流任務(wù)模型,利用模型,從以對(duì)象為中心和以系統(tǒng)為中心的本體論角度,有效發(fā)掘了瞬時(shí)故障傳播影響及影響軌跡,并基于AADL及其擴(kuò)展實(shí)現(xiàn)了將兩種模型統(tǒng)一表示的瞬時(shí)故障傳播分析仿真平臺(tái),結(jié)合案例分析,驗(yàn)證了故障傳播分析方法有效性,為系統(tǒng)化實(shí)現(xiàn)瞬時(shí)故障恢復(fù)及安全控制奠定了基礎(chǔ)。 接著,針對(duì)瞬時(shí)故障難以定位和枚舉及其檢測(cè)對(duì)傳播影響依賴的特性,提出了基于傳播分析的層次化故障檢測(cè)方法。利用瞬時(shí)故障在網(wǎng)絡(luò)化控制系統(tǒng)節(jié)點(diǎn)層和系統(tǒng)層的不同表現(xiàn),設(shè)置層次化的故障檢測(cè),將瞬時(shí)故障限制在一定的影響區(qū)域?qū)崿F(xiàn)檢測(cè),給出了節(jié)點(diǎn)級(jí)和系統(tǒng)級(jí)參數(shù)匹配及基于模型的瞬時(shí)故障檢測(cè)流程,結(jié)合液體混合控制系統(tǒng)仿真模型進(jìn)行了瞬時(shí)故障檢測(cè)仿真驗(yàn)證,驗(yàn)證了基于傳播分析的層次化故障檢測(cè)方法的有效性。 接下來,針對(duì)網(wǎng)絡(luò)化控制系統(tǒng)瞬時(shí)故障恢復(fù)受系統(tǒng)資源約束的問題,提出了基于瞬時(shí)故障傳播影響進(jìn)行故障恢復(fù)點(diǎn)選擇和故障恢復(fù)策略制定的瞬時(shí)故障恢復(fù)方法,并給出了多可用恢復(fù)策略的優(yōu)化選擇過程。根據(jù)瞬時(shí)故障傳播影響軌跡,選擇恢復(fù)點(diǎn)進(jìn)行故障恢復(fù)；利用瞬時(shí)故障對(duì)控制和數(shù)據(jù)的影響,建立故障恢復(fù)策略庫,并基于恢復(fù)策略庫中的恢復(fù)手段,同時(shí)考慮恢復(fù)點(diǎn)選擇的非唯一性,利用任務(wù)可調(diào)度性分析和恢復(fù)效果評(píng)估,給出了瞬時(shí)故障恢復(fù)策略的優(yōu)化方法,結(jié)合簡(jiǎn)化的精確加工位置控制系統(tǒng)仿真模型進(jìn)行了故障恢復(fù)方法的可行性和有效性驗(yàn)證。 實(shí)踐方面,針對(duì)隧道施工安全監(jiān)控系統(tǒng)的安全需求,以瞬時(shí)故障恢復(fù)及安全控制為目標(biāo),對(duì)系統(tǒng)安全約束進(jìn)行了分析,分析了系統(tǒng)中瞬時(shí)故障對(duì)系統(tǒng)安全的影響,并基于瞬時(shí)故障的傳播影響進(jìn)行了層級(jí)化故障檢測(cè)和恢復(fù)設(shè)置,結(jié)合原型系統(tǒng)進(jìn)行實(shí)驗(yàn),結(jié)果表明,利用基于故障傳播分析的瞬時(shí)故障恢復(fù)及安全控制方法進(jìn)行故障控制設(shè)計(jì),能有效提高系統(tǒng)安全性。 最后,對(duì)全文進(jìn)行總結(jié),對(duì)本文存在的不足進(jìn)行了闡述,并對(duì)網(wǎng)絡(luò)化控制系統(tǒng)瞬時(shí)故障恢復(fù)及安全控制技術(shù)進(jìn)行了展望。
[Abstract]:Networked control system has become the main way of modern control system , and its operation safety has been paid much attention . With the large scale and complexity of the system , the transient fault caused by design defect and external disturbance has become the main threat to the operation of networked control system . Firstly , the instantaneous fault cause and characteristics of networked control system are summarized , the requirement of instantaneous fault detection and recovery and safety control is analyzed , the key technology of instantaneous fault recovery and safety control is pointed out , and the key technology of instantaneous fault recovery and safety control is pointed out , and the instantaneous fault recovery and safety control closed - loop control framework and structure are given based on system monitoring , transient fault propagation analysis , instantaneous fault detection , instantaneous fault recovery strategy and recovery strategy . Then , based on the analysis of instantaneous fault propagation method , a transient fault propagation analysis method based on comprehensive system knowledge is proposed . Based on the analysis of instantaneous fault propagation method , an instantaneous fault propagation analysis method based on comprehensive system knowledge is proposed . Based on the ontology modeling knowledge , an instantaneous fault propagation analysis simulation platform based on object - centered and system - centered theory is established . Based on the case analysis , the validity of fault propagation analysis method is verified , which lays a foundation for system realization of instantaneous fault recovery and safety control . In this paper , a hierarchical fault detection method based on propagation analysis is put forward aiming at the difficult location and enumeration of instantaneous fault and its dependence on propagation . Then , according to the problem of system resource constraint of the transient fault recovery of networked control system , the instantaneous fault recovery method based on the influence of instantaneous fault propagation is put forward , and the optimization selection process of multi - available recovery strategy is given . Based on the influence of instantaneous fault propagation on control and data , the fault recovery strategy library is established . Based on the recovery method in the recovery strategy library , the optimization method of the instantaneous fault recovery strategy is given , and the feasibility and validity of the fault recovery method are verified by combining the simplified precision machining position control system simulation model . In practice , aiming at the safety requirement of the safety monitoring system for tunnel construction , the system safety constraint is analyzed based on the instantaneous fault recovery and safety control , and the influence of the instantaneous fault on the system security is analyzed , and the hierarchical fault detection and recovery setting is carried out based on the propagation influence of the instantaneous fault , and the experimental results show that the fault control design is carried out by using the instantaneous fault recovery and the safety control method based on the fault propagation analysis , and the system safety can be effectively improved . At last , the paper summarizes the full text , explains the shortage in this paper , and looks forward to the instantaneous fault recovery and safety control technology of networked control system .

【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2015
【分類號(hào)】：TP273

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