Signal generation apparatus and method thereof for controlling output frequency and output characteristic of chaotic signal

A technology of signal generating device and output frequency, which is applied in the direction of safety communication device, transmission system, digital transmission system, etc., can solve the problem of not being able to change the output frequency and characteristics of the chaotic system, so as to avoid copying and tracking, and control is convenient, fast and convenient The effect of frequency control

Active Publication Date: 2014-04-30
李锐
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  • Description
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  • Application Information

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Problems solved by technology

[0003] However, the current chaotic analog circuit can only generate corresponding chaotic signals by the chaotic circuit built by the fixed mathematical model, and cannot change the output frequency and characteristics of the chaotic system.
For example, the Chinese invention patent "third-order chaotic autonomous system" with the publication number CN101355417A discloses a third-order autonomous chaotic system, but it can only generate chaotic signals in a fixed mathematical model, and cannot change the output frequency and characteristics of the chaotic system; For example, the Chinese invention patent "differential chaotic system signal generating device and signal generating method" with the publication number CN101848077A discloses a differential chaotic system signal generating method and a signal generating device. Although the device can generate chaotic signals of various differential systems, But it cannot change the output frequency and characteristics of the chaotic system

Method used

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  • Signal generation apparatus and method thereof for controlling output frequency and output characteristic of chaotic signal
  • Signal generation apparatus and method thereof for controlling output frequency and output characteristic of chaotic signal
  • Signal generation apparatus and method thereof for controlling output frequency and output characteristic of chaotic signal

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Experimental program
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Effect test

Embodiment 1

[0053] At this time, the circuit diagram of the system is as follows figure 2 , as can be seen from the figure, the simulated chaotic circuit includes channel circuit I, channel circuit II, channel circuit III and channel circuit IV;

[0054] Channel circuit I, channel circuit II, channel circuit III and channel circuit IV are respectively used to realize the first, second, third and fourth functions in the mathematical model;

[0055] Channel circuit I includes resistors R1, R2, R10, R20, R30, and R40, capacitor C1, and inverting amplifiers U1, U2, and U3. The non-inverting terminals of U1, U2, and U3 are all grounded, and one end of the resistors R1 and R2 They are respectively used as the input ends of the state variables, and the other end is connected in parallel to the inverting end of U1. The resistor R10 is connected between the inverting end and the output end of U1, and the resistor R20 is connected between the output end of U1 and the inverting end of U2. Between ...

Embodiment 2

[0062] Change the output frequency of the chaotic system:

[0063] When replacing the first integral capacitor of the system with C1=5nf, the circuit diagram of the new system is as follows Figure 5 As shown, the system output is as Figure 6 shown. It can be seen from the figure that the up and down fluctuations of the chaotic signal are more frequent.

Embodiment 3

[0065] Change the output characteristics of the chaotic system:

[0066] When putting the first parameter of the system in the controller R 1 replace R 1 =4K, the circuit diagram of the new system is as follows Figure 7 As shown, the system output is as Figure 8 shown. It can be seen from the figure that the system produces different chaotic attractors.

[0067] In fact, capacitors C1, C2, C3, C4, R20, R21, R22 and R23 can be combined into a system output frequency changing module, which is equivalent to the function of the output frequency controller and can facilitate the modification of the system output frequency; The resistors R1 , R2 , R3 , R4 , R5 , R6 , R7 and R8 can be combined into a chaotic characteristic changing module, which is equivalent to the function of the output characteristic controller and can facilitate modification of the chaotic characteristic of the system. Through the way of module control, a variety of output signals can be obtained with the ...

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Abstract

The invention relates to a signal generation apparatus for controlling an output frequency and an output characteristic of a chaotic signal. The apparatus is composed of a simulated chaotic circuit, an output frequency controller and an output characteristic controller. Besides, the output frequency controller is used for changing a circuit component in the simulated chaotic circuit to change a system output frequency; and the output characteristic controller is used for changing a resistance value in the simulated chaotic circuit to change a chaotic characteristic of an original system output. Meanwhile, the invention also discloses a method for controlling an output frequency and an output characteristic of a chaotic signal; and the method can be applied to a hyper-chaotic system.

Description

technical field [0001] The invention relates to the technical field of chaos, in particular to a signal generating device and method for controlling the output frequency and characteristics of a chaos system. Background technique [0002] In the past nearly 50 years, chaos has been deeply studied in the fields of science and engineering such as mathematics, physics, and communication. Researches in this field at home and abroad have achieved a lot of relevant results, and put forward many methods that can generate chaotic signals. [0003] But the current chaotic analog circuit can only generate corresponding chaotic signals by the chaotic circuit built by the fixed mathematical model, and cannot change the output frequency and characteristics of the chaotic system. For example, the Chinese invention patent "third-order chaotic autonomous system" with the publication number CN101355417A discloses a third-order autonomous chaotic system, but it can only generate chaotic sign...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/00
Inventor 李锐罗小华周围梁亦龙李俐敏罗明伟李良忠
Owner 李锐
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