本文關(guān)鍵詞： 集成電路 混沌系統(tǒng) 非線性電路 電流模式電路 同步電路　出處：《湘潭大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：混沌電路作為混沌信號(hào)發(fā)生器可以產(chǎn)生真正意義上的連續(xù)混沌信號(hào),具有重要理論意義也是工程應(yīng)用的基礎(chǔ)。由于混沌信號(hào)固有的特性,混沌電路被廣泛應(yīng)用于混沌保密通信和隨機(jī)數(shù)發(fā)生器中。采用集成方式實(shí)現(xiàn)的混沌電路比用分立元件構(gòu)建的混沌電路性能更優(yōu)良。國(guó)外對(duì)于可集成混沌電路的研究始于上個(gè)世紀(jì)九十年代,目前已經(jīng)集成實(shí)現(xiàn)經(jīng)典系統(tǒng)如Chua’s系統(tǒng)、Lorenz系統(tǒng)和基于上述經(jīng)典系統(tǒng)的混沌加密系統(tǒng),對(duì)于多渦卷混沌電路的研究則不充分,沒(méi)有文獻(xiàn)提出基于多渦卷混沌系統(tǒng)加密系統(tǒng)的集成實(shí)現(xiàn)�；谏鲜鲈�,對(duì)可集成多渦卷混沌電路的研究具有一定理論意義和重要工程實(shí)踐價(jià)值。本論文著重研究可集成多渦卷混沌電路以及基于多渦卷混沌系統(tǒng)的同步電路設(shè)計(jì)。在研究對(duì)比了以往電路結(jié)構(gòu)的情況下,本文將跨導(dǎo)器和一種電流輸入電流輸出飽和函數(shù)電路結(jié)合,提出了一種電壓輸入電流輸出飽和函數(shù)電路,該電路輸出特性曲線可以被靈活調(diào)節(jié),用其可以構(gòu)成各種分段線性函數(shù)電路;在一種電壓輸入電流輸出階躍函數(shù)電路的結(jié)構(gòu)上進(jìn)行改進(jìn)得到了一種電壓輸入電流輸出遲滯函數(shù)電路,該電路的特性曲線滯環(huán)大小可以通過(guò)電壓來(lái)調(diào)節(jié),為實(shí)時(shí)改變混沌吸引子的分布提供了可能;在一種電流輸入電流輸出階躍函數(shù)電路的基礎(chǔ)上改進(jìn)得到了一種電流輸入電流輸出遲滯函數(shù)電路,通過(guò)改變電路的偏置可以調(diào)整電路特性曲線;并且創(chuàng)新性地設(shè)計(jì)了電流模式混沌同步電路,由于采用電流作為電路的狀態(tài)變量,簡(jiǎn)化了控制器的設(shè)計(jì)。本文分別仿真實(shí)現(xiàn)了電壓模式混沌電路和電流模式混沌電路,結(jié)果表明相比于采用分立元件構(gòu)建的混沌電路,采用集成方式設(shè)計(jì)的混沌電路具有更加優(yōu)良的性能;同時(shí)電流模式混沌電路產(chǎn)生的混沌吸引子的頻譜范圍要大于電壓模式混沌電路;相對(duì)于現(xiàn)有的電壓模式混沌同步電路,提出的電流模式混沌同步電路可以簡(jiǎn)化控制器的設(shè)計(jì)。本論文采用TSMC 0.35微米工藝參數(shù)對(duì)所有的電路都進(jìn)行了Pspice仿真分析,電路仿真結(jié)果與理論分析結(jié)果、數(shù)值仿真結(jié)果完全吻合,有效地證明本文電路的正確性。本文設(shè)計(jì)的集成型混沌電路由于具有低的電源功耗,寬的信號(hào)頻率范圍,可以廣泛應(yīng)用于混沌相關(guān)的實(shí)際工程領(lǐng)域。
[Abstract]:As a chaotic signal generator, chaotic circuit can produce real continuous chaotic signal, which has important theoretical significance and is the foundation of engineering application, because of the inherent characteristics of chaotic signal. Chaotic circuits are widely used in chaotic secure communication and random number generators. The performance of integrated chaotic circuits is better than that of discrete components. The investigation began on -10s. At present, classical systems such as Chua's system and chaotic encryption system based on the above classical system have been integrated, but the research of multi-scroll chaotic circuit is not sufficient. There is no literature on the implementation of the encryption system based on multi-scroll chaotic system, which is based on the above reasons. This paper focuses on the research of the integrated multi-scroll chaotic circuit and the design of the synchronization circuit based on the multi-scroll chaotic system. Compared with the previous circuit structure. In this paper, a voltage input current output saturation function circuit is proposed by combining the transconductors with a current input current output saturation function circuit. The output characteristic curve of the circuit can be adjusted flexibly. It can be used to form various piecewise linear function circuits. A voltage input current output hysteresis function circuit is obtained by improving the structure of a voltage input current output step function circuit. The hysteresis loop size of the characteristic curve of the circuit can be adjusted by voltage. It is possible to change the distribution of chaotic attractors in real time. Based on a step function circuit of current input current output, a current input current output hysteresis function circuit is obtained. The circuit characteristic curve can be adjusted by changing the bias of the circuit. And innovative design of current-mode chaotic synchronization circuit, because of the use of current as a state variable of the circuit. In this paper, the voltage mode chaotic circuit and the current mode chaotic circuit are simulated, the results show that compared with the chaotic circuit constructed by discrete elements. The integrated chaotic circuit has better performance. At the same time, the frequency range of the chaotic attractor produced by the current-mode chaotic circuit is larger than that of the voltage-mode chaotic circuit. Compared with the existing voltage-mode chaotic synchronization circuit. The proposed current-mode chaotic synchronization circuit can simplify the design of the controller. In this paper, all circuits are simulated and analyzed by Pspice using TSMC 0.35 micron process parameters. The simulation results are in good agreement with the theoretical analysis results and the numerical simulation results show the correctness of the circuit effectively. The integrated chaotic circuit designed in this paper has low power consumption. The wide frequency range of the signal can be widely used in the practical engineering fields related to chaos.
【學(xué)位授予單位】：湘潭大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN402

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