本文選題：憶阻器 + 憶容器��； 參考：《杭州電子科技大學》2017年碩士論文

【摘要】：自1971年Chua提出憶阻器的概念后,直到2008年HP實驗室才首次使用納米級的TiO_2薄膜成功制作出憶阻器的物理模型,證明了憶阻器是真正存在的。2009年Chua又在憶阻器的基礎上豐富了記憶器件的概念,提出了憶容器和憶感器,之后以憶阻器為主要研究方向的記憶器件的研究迅速成為了國內(nèi)外學者的熱點課題。但是目前由于受到制作材料以及制作工藝的限制,記憶器件并沒有實現(xiàn)市場化,即使是HP實驗室實現(xiàn)的憶阻器也僅存在于實驗室中,更不用說后來才被人們關注的憶容器和憶感器,因此通過建模對憶容器進行預先研究在憶容器的發(fā)展歷程中具有重要意義。本文研究了憶容器的定義,提出了一個電荷控制和一個電壓控制的憶容器數(shù)學模型,創(chuàng)建了它們的等效電路,并構(gòu)造了一個同時含有荷控憶容器和HP實驗室TiO_2憶阻器的混沌振蕩電路,分析了其動力學特性和混沌序列的隨機性,最后將其應用于網(wǎng)絡云存儲文件加密中。本文的創(chuàng)新性工作主要包括以下幾個方面:(1)在HP實驗室TiO_2憶阻器的基礎上提出了一個荷控憶容器和一個磁控憶容器數(shù)學模型,并對其端口特性進行理論分析,并根據(jù)憶容器的數(shù)學模型分別給出了對應的等效電路,通過Multisim軟件進行仿真,在正弦信號激勵下其伏庫特性完全符合憶容器的滯回特性,進一步驗證了憶容器模型的非線性特性。(2)研究混沌的基本理論,分析了一些常見的混沌系統(tǒng)特性,在傳統(tǒng)二維離散Henon映射的基礎上提出了一個優(yōu)化的離散映射,對其動力學特性如分叉圖和最大Lyapunov指數(shù)進行了理論和仿真分析,發(fā)現(xiàn)其具有更大的混沌參數(shù)區(qū)間,因而增大了序列的秘鑰空間,提高了安全性。最后,給出了該映射在圖像加密中的一種應用。(3)為進一步探索記憶器件的非線性特性,設計了一個同時包含荷控憶容器和HP TiO_2憶阻器的混沌振蕩電路。對其復雜的動力學特性,包括平衡點集、分岔圖、Laypunov指數(shù)譜、時域波形、Poincaré映射等進行了詳細分析,發(fā)現(xiàn)其具有超混沌、共存吸引子和突發(fā)混沌等現(xiàn)象。按照該系統(tǒng)的狀態(tài)方程設計了一個等效電路,通過Multisim對該電路進行了仿真實驗,實驗結(jié)果與理論結(jié)果完全相同。利用DSP技術對該混沌系統(tǒng)的混沌序列實現(xiàn)了量化,采用NIST測試軟件對該混沌序列的隨機性進行了分析,并與著名的Lorenz系統(tǒng)進行比較,結(jié)果表明此混沌序列擁有非常好的隨機性。(4)基于所設計的憶容器、憶阻器混沌序列,設計了一個網(wǎng)絡云存儲文件加密系統(tǒng),該系統(tǒng)采取一種混沌-AES混合算法,在Windows操作系統(tǒng)下,使用JAVA語言設計了一個網(wǎng)頁端的能夠?qū)ξ募用苌蟼饕约敖饷芟螺d的系統(tǒng)。最后對該系統(tǒng)的加密算法進行了安全性分析,發(fā)現(xiàn)該算法對密鑰非常敏感,且具有非常大的密鑰空間,這使得加密后的文件具有更好的安全性。
[Abstract]:It was only in 2008, after Chua introduced the concept of a resistive device in 1971, that the physical model of the device was successfully built by HP Labs for the first time using nanoscale TiO_2 thin films. In 2009, Chua enriched the concept of memory device and put forward the memory container and sensor. After that, the research of memory devices with memory resistor as the main research direction has quickly become a hot topic for scholars at home and abroad. But at present, because of the limitation of material and process, memory devices are not market-oriented, even the memory devices realized by HP Labs only exist in the laboratory. Not to mention the memory container and sensor which were paid attention to later, so it is very important to study the memory container in advance through modeling in the course of the development of the memory container. In this paper, the definition of memory vessel is studied, and a mathematical model of memory vessel with charge control and voltage control is proposed, and their equivalent circuits are created. A chaotic oscillating circuit with both charge controlled memory container and HP lab TiO_2 resistor is constructed. Its dynamic characteristics and randomness of chaotic sequence are analyzed. Finally, it is applied to network cloud storage file encryption. The innovative work of this paper mainly includes the following aspects: 1) on the basis of TiO_2 resistor in HP laboratory, a mathematical model of a charge controlled memory vessel and a magnetic controlled memory container is proposed, and its port characteristics are theoretically analyzed. According to the mathematical model of the memory vessel, the corresponding equivalent circuits are given, and the simulation results by Multisim software show that the storage characteristics of the memory vessel under sinusoidal excitation are fully consistent with the hysteresis characteristics of the memory vessel. Furthermore, the nonlinear characteristics of the memory container model are verified. (2) the basic theory of chaos is studied, and some common chaotic system characteristics are analyzed. Based on the traditional two-dimensional discrete Henon map, an optimized discrete map is proposed. The dynamic characteristics such as bifurcation graph and maximum Lyapunov exponent are analyzed theoretically and simulated. It is found that the chaotic parameter interval is larger and the secret key space of the sequence is enlarged and the security is improved. Finally, an application of this mapping in image encryption is presented. In order to further explore the nonlinear characteristics of memory devices, a chaotic oscillating circuit is designed, which includes both a charge controlled memory container and an HP TiO_2 amnesia. Its complex dynamic characteristics, including equilibrium point set, bifurcation diagram Laypunov exponent spectrum, time-domain waveform and Poincar 茅 map, are analyzed in detail. It is found that the complex dynamic properties are hyperchaos, coexisting attractor and sudden chaos. According to the state equation of the system, an equivalent circuit is designed and simulated by Multisim. The experimental results are identical with the theoretical results. The chaotic sequence of the chaotic system is quantized by using DSP technology. The randomness of the chaotic sequence is analyzed by NIST test software, and compared with the famous Lorenz system. The results show that this chaotic sequence has very good randomness. (4) based on the designed memory container and memory resistor chaotic sequence, a network cloud storage file encryption system is designed. The system adopts a chaotic AES hybrid algorithm under Windows operating system. JAVA language is used to design a webpage which can encrypt, upload, decrypt and download files. Finally, the security of the encryption algorithm of the system is analyzed, and it is found that the algorithm is very sensitive to the key and has a very large key space, which makes the encrypted file have better security.
【學位授予單位】：杭州電子科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TN60

【參考文獻】

相關期刊論文 前10條

1 王光義;蔡博振;靳培培;胡體玲;;Memcapacitor model and its application in a chaotic oscillator[J];Chinese Physics B;2016年01期

2 譚志平;楊紅姣;劉奇能;曾以成;;最簡荷控型憶阻器混沌電路的設計及實現(xiàn)[J];計算物理;2015年04期

3 袁方;王光義;王曉媛;;Dynamical characteristics of an HP memristor based on an equivalent circuit model in a chaotic oscillator[J];Chinese Physics B;2015年06期

4 俞清;包伯成;胡豐偉;徐權(quán);陳墨;王將;;基于一階廣義憶阻器的文氏橋混沌振蕩器研究[J];物理學報;2014年24期

5 洪慶輝;李志軍;曾金芳;曾以成;;基于電流反饋運算放大器的憶阻混沌電路設計與仿真[J];物理學報;2014年18期

6 包伯成;胡豐偉;劉中;許建平;;Mapping equivalent approach to analysis and realization of memristor-based dynamical circuit[J];Chinese Physics B;2014年07期

7 丘嶸;劉威;;一種混沌手機令牌網(wǎng)絡身份認證系統(tǒng)的設計與實現(xiàn)[J];通信技術;2014年07期

8 翟依依;王光義;;基于Tent混沌序列的數(shù)字圖像加密方法[J];現(xiàn)代電子技術;2014年12期

9 齊國元;Sandra Bazebo Matondo;;Hyper-chaos encryption using convolutional masking and model free unmasking[J];Chinese Physics B;2014年05期

10 楊芳艷;冷家麗;李清都;;基于Chua電路的四維超混沌憶阻電路[J];物理學報;2014年08期

相關博士學位論文 前1條

1 羅玉玲;混沌圖像編碼加密及Hash函數(shù)構(gòu)造研究[D];華南理工大學;2013年

相關碩士學位論文 前5條

1 劉威;憶阻器在混沌及語音保密通信中的應用研究[D];杭州電子科技大學;2015年

2 王大朋;憶阻器混沌及PC機文件加密系統(tǒng)的設計[D];杭州電子科技大學;2014年

3 賀潔玲;憶阻器模型及其在混沌電路與圖像水印中的應用研究[D];杭州電子科技大學;2014年

4 袁方;基于Android平臺的手機混沌加密系統(tǒng)的設計與實現(xiàn)[D];杭州電子科技大學;2013年

5 鐘薺芳;基于混沌-DES混合加密算法的安全文件傳輸系統(tǒng)的設計與實現(xiàn)[D];杭州電子科技大學;2012年

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