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An mclc-type memristive chaotic signal generator
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A technology for generating devices and chaotic signals, which is applied in security communication devices, digital transmission systems, electrical components, etc., can solve the problems of complex circuit structure of chaotic circuits, difficulty in simulation and experimental process, etc., and achieve rich chaotic phenomena, simple structure, and reduced effect of quantity
Active Publication Date: 2018-01-12
常州市常大科技园管理有限公司
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[0004] In order to solve the problem that the circuit structure of the existing chaotic circuit is relatively complicated, and the simulation and experiment process have certain difficulties, the present invention proposes a new type of simple chaotic signal generating device, and the adopted technical scheme is as follows:
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Embodiment 1
[0033] Mathematical modeling:
[0034] like figure 1 shown in the main circuit, figure 1 There are four state variables in it, which are capacitance C 1 voltage across 1 , capacitance C 2 voltage across 2 , the current i flowing through the inductor L L , the internal state variable of the memristor M is the voltage v across the capacitor C C ;
[0035] According to the above four state variables, the dynamic equations of the MCLC type memristive chaotic signal generator circuit are as follows:
[0052] like Figure 11 As shown in the circuit diagram, two operational amplifiers U 1a and U 1b All use OP07AH, diode D 1 -D 4 Both use D1N4148, fixed circuit parameter R C =20kΩ, C 1 =10nF, C 2 =0.22μF, L=100mH, C=1μF and R=1kΩ, by adjusting the resistor R L different parameter values for circuit simulation, when R is selected L =0.9kΩ, R L =1.1kΩ, R L = 1.25kΩ and R L =1.45kΩ, there are corresponding circuit simulation phase rail diagrams as Figure 12 , 13 , 14, 15 shown. It can be seen that different circuit component parameters will show different chaotic characteristics, and a variety of chaotic behaviors with complex dynamic characteristics can be obtained.
[0053] By comparing the results, it can be concluded that the circuit simulation results are basically consistent with the mathematical modeling calculation results, both of which indicate that the present invention can generate chaotic signals.
[0054] Based on the e...
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Abstract
The invention discloses an MCLC-type memristive chaoticsignal generating device. The main circuit includes: two operational amplifiers U1a and U1b, a capacitor C1, a capacitor C2, an inductor L, a resistor RC, a resistor RL, and a diode bridge cascaded RC filter. The memristor M formed; the memristor M formed by the diode bridge cascaded RC filter includes: a diode D1, a diode D2, a diode D3, a diode D4, a resistor R, and a capacitor C, and the diodes D1 to D4 form a full bridge, The output of the full bridge is connected to a first-order RC shunt filter; it can generate chaotic behavior by using only one memristor with the advantages of double-ended input and no ground restriction characteristics, two operational amplifiers, and simple components. This novel circuit structure Not only is it rich in chaotic phenomena, but it can also reduce the number of physical and model components to the greatest extent, and will greatly promote the development of chaotic systems.
Description
technical field [0001] The invention relates to a MCLC type memristive chaotic signal generating device, which is a new type of memristive chaotic signal generator formed by combining a memristive equivalent circuit composed of a diode bridge cascaded RC filter and a CLC circuit. . Background technique [0002] A memristor is a non-linear resistor with a memory function, which can memorize the amount of charge flowing through it, and its resistance value can be changed by controlling the change of the current. Since the successful manufacture of memristors, research on memristors and memristor circuits has rapidly been widely studied all over the world. Research on memristors includes the physical fabrication of nano-memristor devices, the modeling of memristors and the research and analysis of their basic circuit characteristics, the design of memristor circuits and the theoretical analysis and numerical simulation methods of corresponding system characteristics, etc. The...
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