阅读说明：本技术 一种双忆阻的五阶混沌电路 (Five-order chaotic circuit with double memristors ) 是由 黄丽丽 黄强 苏敏 于 2019-11-21 设计创作，主要内容包括：一种双忆阻五阶混沌电路,包括五个通道,第一通道的输出信号-x反馈到输入端作为一路输入信号,该通道的输出信号-x连接第二通道中乘法器U109的一个输入端；第二通道的输出信号-Y连接到第一通道的乘法器U105的一个输入端；第三通道的输出信号-Z的前级信号Z是第二通道的一路输入信号；第四通道的输出信号-U的前级信号U连接第一通道乘法器U103的两个输入端,也连接第二通道乘法器U108的两个输入端；第五通道的输出信号-V的前级信号V连接第一通道的乘法器U132的两个输入端；本发明双忆阻五阶混沌电路结构简单,性能可靠,电阻范围广,适用于大学非线性电路部分教学及演示,在通信加密等领域具有重要的参考价值。(A double-memristor five-order chaotic circuit comprises five channels, wherein an output signal-x of a first channel is fed back to an input end to serve as an input signal, and the output signal-x of the channel is connected with one input end of a multiplier U109 in a second channel; the output signal-Y of the second channel is connected to one input of the multiplier U105 of the first channel; the output signal-Z of the third channel is a preceding-stage signal Z of the second channel; the output signal of the fourth channel, the preceding signal U of the U, is connected to the two inputs of the first channel multiplier U103 and also to the two inputs of the second channel multiplier U108; the former-stage signal V of the output signal-V of the fifth channel is connected with two input ends of the multiplier U132 of the first channel; the double-memristor five-order chaotic circuit is simple in structure, reliable in performance and wide in resistance range, is suitable for teaching and demonstration of a nonlinear circuit part of a university, and has important reference values in the fields of communication encryption and the like.)

1. A double-memristive five-order chaotic circuit is composed of five channels, an output signal-X of a first channel is fed back to an input end to serve as an input signal, the output signal-X of the channel is connected with one input end of a multiplier U109 in a second channel, is also an input signal of the second channel and is also an input signal of a fifth channel, and a previous-stage signal X of the signal output is an input end of a fourth channel and is also connected with one input end of a multiplier U106 of the first channel and one input end of a U133; the output signal-Y of the second channel is connected to one input end of the multiplier U105 of the first channel, and is also an input signal of the third channel and the fourth channel of the first channel, and the preceding-stage signal Y of the signal is fed back to the input end as one-way input signal and fed back to one input end of the multiplier U111; the output signal-Z of the third channel is a preceding-stage signal Z of the second channel; the preceding signal U of the output signal-U of the fourth channel is connected to the two inputs of the multiplier U103 of the first channel, to the two inputs of the multiplier U104 of the first channel, to the two inputs of the multiplier U108 of the second channel, and to the two inputs of U110; the previous-stage signal V of the output signal-V of the fifth channel is connected to both input terminals of the multiplier U132 of the first channel.

The output signal of the first channel is connected with a resistor R2; the negative input end of the inverse integrator U122 is connected with a resistor R1, a resistor R2, a resistor R3, a resistor R4 and a resistor R26; the other ends of the resistor R3, the resistor R4 and the resistor R26 are respectively connected with the output ends of the multipliers U105, U106 and U133; the output ends of the multipliers U103, U104 and U132 are respectively connected to one input end of each of the multipliers U105, U106 and U133; one end of the capacitor C1 is connected with the negative input end of the inverse integrator U122, the other end of the capacitor C1 is connected with the output end of the inverse integrator U122, the output end of the inverse integrator U122 is connected with the negative input end of the inverter U123 through a resistor R5, and the negative input end of the inverter U123 is connected with the output end of the inverter U123 through a resistor R6; the positive output ends of the inverse integrator U122 and the inverter U123 are grounded; the output of inverter U123 is signal-X.

The output ends of the multipliers U108 and U110 of the second channel are respectively connected to one input end of the multipliers U109 and U111; the output signal of the first channel is connected with a resistor R7, the previous-stage signal Y of the output signal of the second channel is connected with a resistor R8, and the previous-stage signal Z of the output signal of the third channel is connected with a resistor R9; the output ends of the multiplier U109 and the multiplier U111 are respectively connected with a resistor R10 and a resistor R11; the other ends of the resistor R10, the resistor R11, the resistor R7, the resistor R8 and the resistor R9 are connected with the negative end input of the inverse integrator U124, one end of the capacitor C2 is connected with the negative end input of the inverse integrator U124, and the other end of the capacitor C2 is connected with the output end of the inverse integrator U124; the output end of the inverting integrator U124 is connected with the negative phase input end of the inverter U125 through a resistor R12; the resistor R13 is connected with the negative phase input end of the inverter U125, and the other end of the resistor R13 is connected with the output end of the inverter U125; the positive input of inverse integrator U124 and inverter U125 is grounded; the output of inverter U125 is signal-Y.

The negative phase input end of the inverting integrator U127 in the third channel is connected with the output signal-Y of the second channel through a resistor R14; the capacitor C3 is connected with the negative phase input end of the inverting integrator U127, and the other end of the capacitor C3 is connected with the output end of the inverting integrator U127; the output end of the inverting integrator U127 is connected with the negative phase input end of the inverter U126 through a resistor R17; the negative phase input terminal of the inverter U126 is connected to the output terminal of the inverter U126 via a resistor R18; the non-inverting input terminal of the inverting integrator U127 and the non-inverting input terminal of the inverter U126 are grounded; the output of inverter U126 is signal-Z.

The negative phase input end of the inverse integrator U128 of the fourth channel is connected with the resistor R24 and the resistor R25, and the other ends of the resistor R24 and the resistor R25 are respectively connected with the output signal-Y of the second channel and the preceding-stage signal X of the output signal of the first channel; the capacitor C5 is connected with the negative phase input end of the inverse integrator U128, and the other end of the capacitor C5 is connected with the output end of the inverse integrator U128; the output end of the inverse integrator U128 is connected with the negative phase input end of the inverter U129 through a resistor R22, and the negative phase input end of the U129 is connected with the output end of the inverter U129 through a resistor R23; the non-inverting input terminal of the inverting integrator U128 and the non-inverting input terminal of the inverter U129 are grounded; the output of inverter U129 is signal-U.

The negative phase input end of the inverting integrator U131 of the fifth channel is connected with the resistor R19, and the other end of the resistor R19 is connected with the output signal of the first channel; the capacitor C4 is connected with the negative phase input end of the inverting integrator U131, and the other end of the capacitor C4 is connected with the output end of the inverting integrator U131; the output end of the inverting integrator U131 is connected with the negative phase input end of the inverter U130 through a resistor R20, and the negative phase input end of the inverter U130 is connected with the output end of the inverter U130 through a resistor R21; the non-inverting input terminal of the inverting integrator U131 and the non-inverting input terminal of the inverter U130 are grounded. The output of inverter U130 is signal-V.

2. The double-memristive chaotic circuit according to claim 1, wherein an operational amplifier LF347 is adopted for each of the inverter U130, the inverter U129, the inverter U126, the inverter U125, the inverter U123, the inverting integrator U124, the inverting integrator U127, the inverting integrator U128, the inverting integrator U124 and the inverting integrator U131.

3. The dual-memristive chaotic circuit according to claim 1, wherein a multiplier AD633 is adopted in each of the multiplier U108, the multiplier U109, the multiplier U110, the multiplier U111, the multiplier U105, the multiplier U103, the multiplier U104, the multiplier U106, the multiplier U132 and the multiplier U133.

Technical Field

The invention relates to a double-memristor five-order chaotic circuit, and belongs to the technical field of nonlinear chaotic signal generation device design.

Background

The memristor has wide application prospects in the fields of artificial neural networks, secret communication, bionics and the like due to nonlinearity and memorability, and in recent years, the related circuit of the memristor becomes a hot point of academic research, and a plurality of scholars obtain great research results. Many scholars have proposed both hidden attractors and coexisting attractors.

At present, memristive chaotic circuits are mainly applied to image processing and encryption, researches on hidden attractors and multi-stable phenomena are few, and a chaotic system with the multi-stable phenomena and sensitivity to initial values provide stronger support for an encryption system. Meanwhile, the designed memristor circuit can further enhance the understanding of students on hidden attractors and multiple stable states.

The invention aims to solve the problems that the complexity of a double-memristor five-order circuit, the selection of power supply parameters and the design difficulty and initial value of a system circuit are difficult to determine in the prior art.

Disclosure of Invention

The invention aims to provide a memristor five-order chaotic circuit, and a nonlinear system output signal of the memristor five-order chaotic circuit has strong chaotic characteristics and multi-stability.

In order to achieve the purpose, the invention adopts the technical scheme that:

a double-memristive five-order chaotic circuit is composed of five channels, an output signal-X of a first channel is fed back to an input end to serve as an input signal, the output signal-X of the channel is connected with one input end of a multiplier U109 in a second channel, is also an input signal of the second channel and is also an input signal of a fifth channel, and a previous-stage signal X of the signal output is an input end of a fourth channel and is also connected with one input end of a multiplier U106 of the first channel and one input end of a U133; the output signal-Y of the second channel is connected to one input end of the multiplier U105 of the first channel, and is also an input signal of the third channel and the fourth channel of the first channel, and the preceding-stage signal Y of the signal is fed back to the input end as one-way input signal and fed back to one input end of the multiplier U111; the output signal-Z of the third channel is a preceding-stage signal Z of the second channel; the preceding signal U of the output signal-U of the fourth channel is connected to the two inputs of the multiplier U103 of the first channel, to the two inputs of the multiplier U104 of the first channel, to the two inputs of the multiplier U108 of the second channel, and to the two inputs of U110; the previous-stage signal V of the output signal-V of the fifth channel is connected to both input terminals of the multiplier U132 of the first channel.

The output signal of the first channel is connected with a resistor R2; the negative input end of the inverse integrator U122 is connected with a resistor R1, a resistor R2, a resistor R3, a resistor R4 and a resistor R26; the other ends of the resistor R3, the resistor R4 and the resistor R26 are respectively connected with the output ends of the multipliers U105, U106 and U133; the output ends of the multipliers U103, U104 and U132 are respectively connected to one input end of each of the multipliers U105, U106 and U133; one end of the capacitor C1 is connected with the negative input end of the inverse integrator U122, the other end of the capacitor C1 is connected with the output end of the inverse integrator U122, the output end of the inverse integrator U122 is connected with the negative input end of the inverter U123 through a resistor R5, and the negative input end of the inverter U123 is connected with the output end of the inverter U123 through a resistor R6; the positive output ends of the inverse integrator U122 and the inverter U123 are grounded; the output of inverter U123 is signal-X.

The output ends of the multipliers U108 and U110 of the second channel are respectively connected to one input end of the multipliers U109 and U111; the output signal of the first channel is connected with a resistor R7, the previous-stage signal Y of the output signal of the second channel is connected with a resistor R8, and the previous-stage signal Z of the output signal of the third channel is connected with a resistor R9; the output ends of the multiplier U109 and the multiplier U111 are respectively connected with a resistor R10 and a resistor R11; the other ends of the resistor R10, the resistor R11, the resistor R7, the resistor R8 and the resistor R9 are connected with the negative end input of the inverse integrator U124, one end of the capacitor C2 is connected with the negative end input of the inverse integrator U124, and the other end of the capacitor C2 is connected with the output end of the inverse integrator U124; the output end of the inverting integrator U124 is connected with the negative phase input end of the inverter U125 through a resistor R12; the resistor R13 is connected with the negative phase input end of the inverter U125, and the other end of the resistor R13 is connected with the output end of the inverter U125; the positive input of inverse integrator U124 and inverter U125 is grounded; the output of inverter U125 is signal-Y.

The negative phase input end of the inverting integrator U127 in the third channel is connected with the output signal-Y of the second channel through a resistor R14; the capacitor C3 is connected with the negative phase input end of the inverting integrator U127, and the other end of the capacitor C3 is connected with the output end of the inverting integrator U127; the output end of the inverting integrator U127 is connected with the negative phase input end of the inverter U126 through a resistor R17; the negative phase input terminal of the inverter U126 is connected to the output terminal of the inverter U126 via a resistor R18; the non-inverting input terminal of the inverting integrator U127 and the non-inverting input terminal of the inverter U126 are grounded; the output of inverter U126 is signal-Z.

The negative phase input end of the inverse integrator U128 of the fourth channel is connected with the resistor R24 and the resistor R25, and the other ends of the resistor R24 and the resistor R25 are respectively connected with the output signal-Y of the second channel and the preceding-stage signal X of the output signal of the first channel; the capacitor C5 is connected with the negative phase input end of the inverse integrator U128, and the other end of the capacitor C5 is connected with the output end of the inverse integrator U128; the output end of the inverse integrator U128 is connected with the negative phase input end of the inverter U129 through a resistor R22, and the negative phase input end of the U129 is connected with the output end of the inverter U129 through a resistor R23; the non-inverting input terminal of the inverting integrator U128 and the non-inverting input terminal of the inverter U129 are grounded; the output of inverter U129 is signal-U.

The negative phase input end of the inverting integrator U131 of the fifth channel is connected with the resistor R19, and the other end of the resistor R19 is connected with the output signal of the first channel; the capacitor C4 is connected with the negative phase input end of the inverting integrator U131, and the other end of the capacitor C4 is connected with the output end of the inverting integrator U131; the output end of the inverting integrator U131 is connected with the negative phase input end of the inverter U130 through a resistor R20, and the negative phase input end of the inverter U130 is connected with the output end of the inverter U130 through a resistor R21; the non-inverting input terminal of the inverting integrator U131 and the non-inverting input terminal of the inverter U130 are grounded; the output of inverter U130 is signal-V.

The invention has the beneficial effects that:

the invention can observe the output signals z-y, v-y, y-x and z-x phase diagrams on a common oscilloscope, and has the advantages of simple circuit structure, reliable circuit performance and easy realization.

Drawings

FIG. 1 is a circuit diagram of the present invention

FIG. 2 is a z-x output phase diagram of FIG. 1

FIG. 3 is a z-y output phase diagram of FIG. 1

FIG. 4 is a y-v output phase diagram of FIG. 1

FIG. 5 is a y-x output phase diagram of FIG. 1

FIG. 6 is a waveform diagram of the x-t output of FIG. 1

FIG. 7 is a waveform diagram of the y-t output of FIG. 1

FIG. 8 is a waveform diagram of the z-t output of FIG. 1

Detailed Description