本文關(guān)鍵詞： 自適應(yīng)控制 模糊邏輯系統(tǒng) 嚴(yán)格反饋 Backstepping　出處：《青島大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：工業(yè)工程中非線性和時(shí)滯現(xiàn)象是普遍存在的,而系統(tǒng)存在的非線性,不確定性和時(shí)滯等因素會(huì)影響系統(tǒng)的性能,也對(duì)系統(tǒng)的控制設(shè)計(jì)帶來(lái)一定的困難。近年來(lái),隨著現(xiàn)代技術(shù)的進(jìn)步,非線性系統(tǒng)和時(shí)滯系統(tǒng)的分析與控制設(shè)計(jì)也成為專家學(xué)者關(guān)注的熱點(diǎn)。運(yùn)用模糊邏輯系統(tǒng)的逼近理論與自適應(yīng)backstepping技術(shù)相結(jié)合的控制設(shè)計(jì)方法受到極大關(guān)注。嚴(yán)格反饋系統(tǒng)雖是純反饋系統(tǒng)的特殊形式,但其控制設(shè)計(jì)與性能分析具有廣泛的應(yīng)用背景。本文主要研究了單輸入單輸出非線性嚴(yán)格反饋系統(tǒng)及其時(shí)滯系統(tǒng)的控制設(shè)計(jì)問題。主要內(nèi)容如下:第一,研究了一類單輸入單輸出非線性嚴(yán)格反饋系統(tǒng),利用自適應(yīng)模糊backstepping方法構(gòu)建系統(tǒng)控制器,由于此系統(tǒng)狀態(tài)是不可直接測(cè)量的,所以設(shè)計(jì)狀態(tài)觀測(cè)器估計(jì)系統(tǒng)的狀態(tài)變量。為減少系統(tǒng)狀態(tài)變量的估計(jì)誤差,在觀測(cè)器中設(shè)置模糊邏輯系統(tǒng),增加狀態(tài)估計(jì)值的準(zhǔn)確度。運(yùn)用凸組合和矩陣不等式求解觀測(cè)增益矩陣,解決了現(xiàn)有的觀測(cè)器設(shè)計(jì)與觀測(cè)誤差動(dòng)態(tài)穩(wěn)定性的不一致的問題。第二,研究了一類非線性嚴(yán)格反饋時(shí)滯系統(tǒng)的自適應(yīng)模糊控制問題。將上述獲得的基于觀測(cè)器的模糊自適應(yīng)輸出反饋控制設(shè)計(jì)方法進(jìn)一步擴(kuò)展到非線性嚴(yán)格反饋時(shí)滯系統(tǒng)上,給出了相應(yīng)的模糊自適應(yīng)輸出反饋鎮(zhèn)定控制方案。第三,針對(duì)上述兩類非線性系統(tǒng)進(jìn)行仿真研究。
[Abstract]:Nonlinear and time-delay phenomena are common in industrial engineering, but the nonlinear, uncertain and time-delay of the system will affect the performance of the system, and it will also bring some difficulties to the control design of the system in recent years. With the progress of modern technology. The analysis and control design of nonlinear systems and time-delay systems have also become the focus of attention of experts and scholars. Control Design combining the approximation Theory of Fuzzy Logic Systems with Adaptive backstepping Technology. The strict feedback system is a special form of pure feedback system. But its control design and performance analysis have a wide application background. This paper mainly studies the control design of single-input single-output nonlinear strict feedback system and its time-delay system. The main contents are as follows: 1. A class of nonlinear strict feedback system with single input and single output is studied. The adaptive fuzzy backstepping method is used to construct the system controller. The state of the system can not be measured directly. Therefore, the state observer is designed to estimate the state variables of the system. In order to reduce the estimation error of the system state variables, the fuzzy logic system is set up in the observer. By using convex combination and matrix inequality to solve the observation gain matrix, the problem that the observer design is inconsistent with the dynamic stability of observation error is solved. In this paper, the adaptive fuzzy control problem for a class of nonlinear strictly feedback time-delay systems is studied. The proposed design method of fuzzy adaptive output feedback control based on observer is further extended to nonlinear strictly feedback time-delay systems. In general. The corresponding fuzzy adaptive output feedback stabilization scheme is presented. Thirdly, the simulation of the two kinds of nonlinear systems is carried out.
【學(xué)位授予單位】：青島大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TP273

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本文編號(hào)：1484497