頻率選擇表面寬帶吸波體的參數(shù)化設(shè)計(jì)與優(yōu)化
發(fā)布時(shí)間：2018-10-30 10:30
【摘要】：頻率選擇表面(FSS)吸波體作為一種重要的新型結(jié)構(gòu)型吸波材料,具有廣闊的應(yīng)用前景。系統(tǒng)的設(shè)計(jì)與優(yōu)化方法對(duì)于推動(dòng)FSS寬帶吸波體的發(fā)展具有重要意義。本文研究了FSS吸波體的吸波機(jī)理及其模型的參數(shù)化方法,討論了FSS寬帶吸波體的性能評(píng)價(jià)方法、分析方法及其優(yōu)化框架。通過(guò)建立合理的參數(shù)化模型,使用合適的評(píng)價(jià)與分析方法,針對(duì)單元圖案、結(jié)構(gòu)排布等不同的側(cè)重點(diǎn),優(yōu)化設(shè)計(jì)了多種FSS寬帶吸波體。論文主要研究工作如下： 從諧振、阻抗匹配等角度討論了FSS吸波體的吸波原理,以傳輸線模型為基礎(chǔ)定性分析了影響FSS吸波體諧振與阻抗匹配狀態(tài)的各種要素,以此為基礎(chǔ)提出FSS吸波體的模型參數(shù)化方法。FSS的單元圖案尺寸、器件以及結(jié)構(gòu)等均可以使用此方法參數(shù)化。 根據(jù)FSS寬帶吸波體的性能特點(diǎn),討論并提出了能夠有效評(píng)價(jià)其寬帶吸收性能的評(píng)價(jià)方法,以評(píng)價(jià)函數(shù)為基礎(chǔ)提出了FSS寬帶吸波體的二維解空間描述方法�；贔SS寬帶吸波體的參數(shù)化模型,有針對(duì)性地梳理與改進(jìn)遺傳算法在FSS優(yōu)化中的應(yīng)用。最后以設(shè)計(jì)、評(píng)價(jià)、分析、優(yōu)化等為基礎(chǔ)構(gòu)建FSS寬帶吸波體的智能優(yōu)化框架。 研究與設(shè)計(jì)了一種4-8GHz開關(guān)切換式FSS寬帶吸波體。側(cè)重圖案參數(shù),對(duì)開關(guān)性能進(jìn)行設(shè)計(jì)與優(yōu)化。以雙開口環(huán)耦合圖案為基礎(chǔ),設(shè)計(jì)具有雙諧振特性的可調(diào)單元結(jié)構(gòu)。提出多態(tài)聯(lián)合評(píng)價(jià)遺傳算法(PUE-GA)對(duì)其開關(guān)特性進(jìn)行評(píng)價(jià)與優(yōu)化。最終實(shí)現(xiàn)了OFF狀態(tài)-10dB吸收、ON狀態(tài)全反射的開關(guān)切換式FSS寬帶吸波體。 研究與設(shè)計(jì)了一種1-5GHz超寬帶連續(xù)可調(diào)式FSS寬帶吸波體。側(cè)重圖案參數(shù),對(duì)連續(xù)可調(diào)吸波性能進(jìn)行設(shè)計(jì)與優(yōu)化。以一種簡(jiǎn)單諧振單元為基礎(chǔ),優(yōu)化與設(shè)計(jì)具有多諧振特性的單元圖案,并在此基礎(chǔ)上設(shè)計(jì)提出具有漸變邊緣的多諧振單元圖案。通過(guò)設(shè)計(jì)合理的可調(diào)器件加載和激勵(lì)方式,賦予FSS吸波體雙可調(diào)自由度,從而充分發(fā)揮出漸變邊緣圖案的多諧振特性。最終實(shí)現(xiàn)了1-5GHz范圍-10dB寬帶可調(diào)吸波性能。 研究與設(shè)計(jì)了一種具有極化無(wú)關(guān)性能的1-8GHz超寬帶連續(xù)可調(diào)式FSS吸波體。側(cè)重圖案參數(shù)與結(jié)構(gòu)層厚度,對(duì)連續(xù)可調(diào)吸波性能進(jìn)行設(shè)計(jì)與優(yōu)化�；跐u變邊緣圖案的設(shè)計(jì)思路,在保持可調(diào)性以及吸波性能的同時(shí),通過(guò)簡(jiǎn)化、改進(jìn)得到具有極化無(wú)關(guān)特性的基礎(chǔ)圖案。使用PUE-GA進(jìn)行性能優(yōu)化后,結(jié)合可調(diào)器件激勵(lì)方法,最終在1-8GHz超寬帶范圍實(shí)現(xiàn)了極化無(wú)關(guān)性能與-10dB吸收性能。 研究與設(shè)計(jì)了一種具有極化無(wú)關(guān)性能的1-8GHz超寬帶多層結(jié)構(gòu)無(wú)源FSS寬帶吸波體。側(cè)重圖案參數(shù)與結(jié)構(gòu)參數(shù),對(duì)不可調(diào)寬帶吸波性能進(jìn)行設(shè)計(jì)與優(yōu)化。通過(guò)放開兩層圖案加載層與電介質(zhì)基底層的排列形式,搜索更適于1-8GHz超寬帶吸波的構(gòu)型。使用“設(shè)計(jì)-全局優(yōu)化-分析-局部?jī)?yōu)化”的優(yōu)化框架,對(duì)多層結(jié)構(gòu)FSS寬帶吸波體的性能進(jìn)行優(yōu)化。最終得到在1-8GHz具有-10dB吸收性能和極化無(wú)關(guān)性能的多層結(jié)構(gòu)無(wú)源FSS寬帶吸波體。 本文的研究說(shuō)明,所提出的模型參數(shù)化方法以及設(shè)計(jì)、評(píng)價(jià)、分析和優(yōu)化方法能用于有源和無(wú)源FSS寬帶吸波體的設(shè)計(jì)與優(yōu)化。所得到的多種FSS寬帶吸波體在其目標(biāo)頻段均具有良好性能。這些研究將為隱身技術(shù)領(lǐng)域的應(yīng)用奠定基礎(chǔ)。
[Abstract]:Frequency selective surface (FSS) wave absorbing body, as an important new type of structure type wave absorbing material, has wide application prospect. The design and optimization of the system is of great significance to promote the development of FSS broadband wave-absorbing body. This paper studies the wave absorbing mechanism of FSS wave absorbing body and the parametric method of its model, and discusses the performance evaluation method, analysis method and optimization framework of FSS broadband wave absorbing body. Through establishing reasonable parametric model, using appropriate evaluation and analysis method, aiming at different emphasis of unit pattern, structure arrangement and so on, a variety of FSS broadband wave absorbing bodies are optimized. The main work of the thesis is as follows: The wave absorbing principle of FSS wave absorbing body is discussed from the angle of resonance and impedance matching, and the resonance and impedance matching state of FSS wave absorbing body are qualitatively analyzed based on the transmission line model. The model parametrization of FSS wave absorbing body is put forward on the basis of this. Methods: The unit pattern size, device and structure of FSS can be used in this method. Based on the performance characteristics of FSS broadband wave-absorbing body, the evaluation method of the broadband absorption performance of FSS is discussed and put forward, and the two-dimensional solution of FSS broadband wave-absorbing body is proposed based on the evaluation function. In this paper, based on the parametric model of FSS broadband wave-absorbing body, the improved genetic algorithm based on the parametric model of FSS broadband wave-absorbing body is proposed in this paper. Application of FSS broadband wave-absorbing body based on design, evaluation, analysis and optimization Can optimize the framework. Research and design a 4-8GHz switch switching type FSS broadband wave-absorbing body, focusing on pattern parameters, switching properties The design and optimization can be carried out. Based on the double-open loop coupling pattern, the design has a double resonance. In this paper, a multi-state joint evaluation genetic algorithm (PUE-GA) is proposed for its switch. Evaluation and optimization are carried out. In the end, the switching mode of OFF state-10dB absorption and ON state total reflection is realized. FSS broadband wave-absorbing body. A 1-5GHz ultra-wide band continuum is designed and designed. Adjustable FSS broadband wave absorbing body, focusing on pattern parameters, continuous adjustable The design and optimization of the wave absorbing performance are designed and optimized based on a simple resonance unit, and the unit pattern with multi-resonant characteristics is optimized and designed, and the design is given. By designing reasonable adjustable device loading and excitation mode, the FSS wave absorbing body can be endowed with two adjustable degrees of freedom so as to give full play to the taper. Multi-resonant characteristic of variable-edge pattern. 1-5GHz range is finally realized-1 0dB broadband adjustable wave absorption performance. A 1-8GHz with polarization independent performance is studied and designed. Ultra-wide band continuous adjustable FSS wave absorbing body, focusing on the pattern parameters and thickness of the structure layer, and Design and optimization of continuous adjustable suction wave performance. Based on the design idea of gradual edge pattern, it can be improved through simplification and improvement while maintaining adjustability and wave absorption performance. When the PUE-GA is used for performance optimization, the polarization is finally realized in the 1-8GHz ultra wide band range after the performance optimization is performed using the PUE-GA. Independent performance and-10dB absorption performance. A 1-8GHz with polarization-independent performance was studied and designed The invention discloses an ultra-wideband multilayer structure non-source FSS broadband wave absorption body, The design and optimization of the non-adjustable broadband wave absorption performance are carried out. The arrangement forms of the two layers of pattern loading layer and the dielectric substrate layer are released, more suitable for the configuration of 1-8ghz ultra-wideband suction waves, multi-layer using an optimized framework of 鈥淒esign-Global Optimization-Analysis-Locally Optimized鈥，
本文編號(hào)：2299750
[Abstract]:Frequency selective surface (FSS) wave absorbing body, as an important new type of structure type wave absorbing material, has wide application prospect. The design and optimization of the system is of great significance to promote the development of FSS broadband wave-absorbing body. This paper studies the wave absorbing mechanism of FSS wave absorbing body and the parametric method of its model, and discusses the performance evaluation method, analysis method and optimization framework of FSS broadband wave absorbing body. Through establishing reasonable parametric model, using appropriate evaluation and analysis method, aiming at different emphasis of unit pattern, structure arrangement and so on, a variety of FSS broadband wave absorbing bodies are optimized. The main work of the thesis is as follows: The wave absorbing principle of FSS wave absorbing body is discussed from the angle of resonance and impedance matching, and the resonance and impedance matching state of FSS wave absorbing body are qualitatively analyzed based on the transmission line model. The model parametrization of FSS wave absorbing body is put forward on the basis of this. Methods: The unit pattern size, device and structure of FSS can be used in this method. Based on the performance characteristics of FSS broadband wave-absorbing body, the evaluation method of the broadband absorption performance of FSS is discussed and put forward, and the two-dimensional solution of FSS broadband wave-absorbing body is proposed based on the evaluation function. In this paper, based on the parametric model of FSS broadband wave-absorbing body, the improved genetic algorithm based on the parametric model of FSS broadband wave-absorbing body is proposed in this paper. Application of FSS broadband wave-absorbing body based on design, evaluation, analysis and optimization Can optimize the framework. Research and design a 4-8GHz switch switching type FSS broadband wave-absorbing body, focusing on pattern parameters, switching properties The design and optimization can be carried out. Based on the double-open loop coupling pattern, the design has a double resonance. In this paper, a multi-state joint evaluation genetic algorithm (PUE-GA) is proposed for its switch. Evaluation and optimization are carried out. In the end, the switching mode of OFF state-10dB absorption and ON state total reflection is realized. FSS broadband wave-absorbing body. A 1-5GHz ultra-wide band continuum is designed and designed. Adjustable FSS broadband wave absorbing body, focusing on pattern parameters, continuous adjustable The design and optimization of the wave absorbing performance are designed and optimized based on a simple resonance unit, and the unit pattern with multi-resonant characteristics is optimized and designed, and the design is given. By designing reasonable adjustable device loading and excitation mode, the FSS wave absorbing body can be endowed with two adjustable degrees of freedom so as to give full play to the taper. Multi-resonant characteristic of variable-edge pattern. 1-5GHz range is finally realized-1 0dB broadband adjustable wave absorption performance. A 1-8GHz with polarization independent performance is studied and designed. Ultra-wide band continuous adjustable FSS wave absorbing body, focusing on the pattern parameters and thickness of the structure layer, and Design and optimization of continuous adjustable suction wave performance. Based on the design idea of gradual edge pattern, it can be improved through simplification and improvement while maintaining adjustability and wave absorption performance. When the PUE-GA is used for performance optimization, the polarization is finally realized in the 1-8GHz ultra wide band range after the performance optimization is performed using the PUE-GA. Independent performance and-10dB absorption performance. A 1-8GHz with polarization-independent performance was studied and designed The invention discloses an ultra-wideband multilayer structure non-source FSS broadband wave absorption body, The design and optimization of the non-adjustable broadband wave absorption performance are carried out. The arrangement forms of the two layers of pattern loading layer and the dielectric substrate layer are released, more suitable for the configuration of 1-8ghz ultra-wideband suction waves, multi-layer using an optimized framework of 鈥淒esign-Global Optimization-Analysis-Locally Optimized鈥，
本文編號(hào)：2299750
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