CN105119706A - Self-adaptive synchronization method and circuit for Lorenz hyperchaotic system including y squaredbased on memristor - Google Patents

Abstract

The invention relates to a synchronization method and circuit for a chaotic system, and in particular relates to a self-adaptive synchronization method and circuit for a Lorenz hyperchaotic system including y squared based on a memristor. The memristor is used as a physical component newly found in the hewlett-packard laboratory in 2008; the memristor not only can be used for replacing a chua's diode in a chua's circuit to form the chaotic system but also can be used as a component added into three-dimensional chaotic systems, such as a Lorenz system, a Chen system and the Lorenz system, so as to form the hyperchaotic system; currently, the chaotic or hyperchaotic method and circuit based on the memristor as one component are provided; but, the synchronization method of the hyperchaotic system based on the memristor as one component is still not provided, which is the deficiency in the prior art; the Lorenz hyperchaotic system including y squared is provided by utilizing the memristor; and the self-adaptive synchronization method of the chaotic system is provided on this basis.

Description

A kind of adaptive synchronicity method and circuit containing the Lorenz hyperchaotic system of y side based on memristor

Technical field

The present invention relates to a Synchronization of Chaotic Systems and circuit, particularly a kind of adaptive synchronicity method and circuit containing the Lorenz hyperchaotic system of y side based on memristor.

Background technology

Memristor was as the newfound physical component in HP Lab in 2008, the Cai Shi diode in cai's circuit can be replaced to form chaos system, also three-dimensional chaotic system can be increased to as Lorenz system as element, in Chen system and Lorenz system, form hyperchaotic system, at present, memristor as element formed chaos or hyperchaos Method and circuits oneself be suggested, but the synchronous method utilizing memristor to form hyperchaotic system as an element does not still propose, this is the deficiencies in the prior art parts, the present invention utilizes memristor to propose a Lorenz hyperchaotic system containing y side, and propose the adaptive synchronicity method of this chaos system on this basis.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of the adaptive synchronicity method and the circuit that contain the Lorenz hyperchaotic system of y side based on memristor, and the present invention adopts following technological means to realize goal of the invention:

1., based on the adaptive synchronicity method of memristor containing the Lorenz hyperchaotic system of y side, it is characterized in that, comprise the following steps:

(1) the Lorenz chaos system i containing y side is:

$\left\{\begin{array}{cc}\begin{array}{c}dx/dt=a(y-x)\\ dy/dt=bx-y+xz\\ dz/dt=y^2-cz\end{array}& a=10,b=28,c=10/3\end{array}\right.---i$

In formula, x, y, z are state variable;

(2) the memristor model that the present invention adopts is ii:

Wherein represent that magnetic control recalls resistance, represent magnetic flux, m, n be greater than zero parameter;

(3) obtaining iii to the memristor differentiate of ii is:

represent and recall and lead, m, n be greater than zero parameter;

(4) using memristor model iii as unidimensional system variable, be added on second equation of three-dimensional chaotic system i, obtain and a kind ofly there is memristor containing the Lorenz hyperchaotic system iv of y side:

$\left\{\begin{array}{c}dx/dt=a(y-x)\\ dy/dt=bx-y+xz-kxW\left(u\right)\\ dz/dt=y^2-cz\\ du/dt=-x\end{array}\right.---iv$

In formula, x, y, z, u are state variable, parameter value a=10, b=28, c=10/3, k=1, m=8, n=0.006;

(5) with described in iv based on memristor containing y side Lorenz hyperchaotic system for drive system v:

$\left\{\begin{array}{c}{\mathrm{dx}}_1/dt=a(y_1-x_1)\\ {\mathrm{dy}}_1/dt={\mathrm{bx}}_1-y_1+x_1{z}_1-{\mathrm{kx}}_{1}W\left(u_1\right)\\ {\mathrm{dz}}_1/dt={y_1}^2-{\mathrm{cz}}_1\\ {\mathrm{du}}_1/dt=-x_1\end{array}\right.---v$

X in formula ₁, y ₁, z ₁, u ₁for state variable, parameter value a=10, b=28, c=10/3, k=1, m=8, n=0.006

(6) to contain the Lorenz hyperchaotic system of x side for responding system vi based on memristor described in iv:

$\left\{\begin{array}{c}{\mathrm{dx}}_2/dt=a(y_2-x_2)+v_1\\ {\mathrm{dy}}_2/dt={\mathrm{bx}}_2-y_2+x_2{z}_2-{\mathrm{kx}}_{2}W\left(u_2\right)+v_2\\ {\mathrm{dz}}_2/dt={y_2}^2-{\mathrm{cz}}_2+v_3\\ {\mathrm{du}}_2/dt=-x_2+v_4\end{array}\right.---vi$

X in formula ₂, y ₂, z ₂, u ₂for state variable, v ₁, v ₂, v ₃, v ₄for controller, parameter value a=10, b=28, c=10/3, k=1, m=8, n=0.006

(7) error system e is defined ₁=(x ₂-x ₁), e ₂=(z ₂-z ₁), when controller get be worth as follows time, drive chaos system v and response chaos system vi to realize synchronous;

$\left\{\begin{array}{c}{v}_1=-e_1\∫e_1^{2}dt\\ v_2=0\\ v_3=-e_2\∫e_2^{2}dt\\ v_4=0\end{array}\right.---vii$

By the Chaotic Synchronous circuit driving chaos system v and response chaos system vi to form be:

$\left\{\begin{array}{c}{\mathrm{dx}}_1/dt=a(y_1-x_1)\\ {\mathrm{dy}}_1/dt={\mathrm{bx}}_1-y_1+x_1{z}_1-{\mathrm{kx}}_{1}W\left(u_1\right)\\ {\mathrm{dz}}_1/dt={y_1}^2-{\mathrm{cz}}_1\\ {\mathrm{du}}_1/dt=-x_1\\ {\mathrm{dx}}_2/dt=a(y_2-x_2)-(x_2-x_1)\∫{(x_2-x_1)}^{2}dt\\ {\mathrm{dy}}_2/dt={\mathrm{bx}}_2-y_2+x_2{z}_2-{\mathrm{kx}}_{2}W\left(u_2\right)\\ {\mathrm{dz}}_2/dt={y_2}^2-{\mathrm{cz}}_2-(z_2-z_1)\∫{(z_2-z_1)}^{2}dt\\ {\mathrm{du}}_2/dt=-x_2\end{array}\right.---ix$

2. one kind contains the adaptive synchronicity circuit of the Lorenz hyperchaotic system of y side based on memristor, it is characterized in that: described circuit is a kind of to be made up of drive system and responding system based on the adaptive synchronicity of memristor containing the Lorenz hyperchaotic system of y side, drive system comprises Lorenz system I circuit containing y side and memristor I circuit, responding system comprises controller 1 circuit, controller electricity 2 tunnels, containing the Lorenz system II circuit of y side and memristor II circuit, driving system circuit drives responding system circuit by signal;

Containing the Lorenz system I circuit of y side by integrated operational amplifier (LF347N) and resistance, the three anti-phase adders in tunnel that electric capacity is formed, inverting integrator and inverter and multiplier composition, the anti-phase anti-phase output of the adder input termination first via of the first via and the homophase on the second tunnel export, the anti-phase adder input on the second tunnel connects the in-phase output end of the first via, connect the reversed-phase output on the second tunnel, the input of multiplier (A2) connects the anti-phase output of the first via and the homophase output on the 3rd tunnel respectively, the input of the anti-phase adder in output termination second tunnel of multiplier (A2), the anti-phase input on the 3rd tunnel connects the in-phase output end on the 3rd tunnel, the input of multiplier (A3) connects the in-phase input end on the second tunnel and the inverting input on the second tunnel respectively, the anti-phase adder input on output termination the 3rd tunnel of multiplier (A3),

Memristor I circuit is made up of integrated operational amplifier (LF353N) and 2 multipliers (AD633JN), integrated operational amplifier (LF353N) and resistance, electric capacity form inverting integrator, the first via homophase of input termination Lorenz system I circuit exports, and output connects the input of the second anti-phase adder in tunnel of the Lorenz system I circuit containing y side by 2 multipliers;

Containing the Lorenz system II circuit of y side by integrated operational amplifier (LF347N) and resistance, the three anti-phase adders in tunnel that electric capacity is formed, inverting integrator and inverter and multiplier composition, the anti-phase anti-phase output of the adder input termination first via of the first via and the homophase on the second tunnel export, the anti-phase adder input on the second tunnel connects the in-phase output end of the first via, connect the reversed-phase output on the second tunnel, the input of multiplier (A4) connects the anti-phase output of the first via and the homophase output on the 3rd tunnel respectively, the input of the anti-phase adder in output termination second tunnel of multiplier (A4), the anti-phase input on the 3rd tunnel connects the in-phase output end on the 3rd tunnel, the input of multiplier (A5) connects the in-phase input end on the second tunnel and the inverting input on the second tunnel respectively, the anti-phase adder input on output termination the 3rd tunnel of multiplier (A5),

Memristor II circuit is made up of integrated operational amplifier (LF353N) and 2 multipliers (AD633JN), integrated operational amplifier (LF353N) and resistance, electric capacity form inverting integrator, the first via homophase of input termination Lorenz system II circuit exports, and output connects the input of the second anti-phase adder in tunnel of the Lorenz system II circuit containing y side by 2 multipliers;

Controller 1 circuit is made up of anti-phase adder, multiplier, inverter and inverting integrator, anti-phase adder input connects the reversed-phase output of the in-phase output end containing the Lorenz system I circuit first via of y side and the Lorenz system II circuit first via containing y side, and multiplier (A9) exports the anti-phase adder input of the Lorenz system II circuit first via connect containing y side;

Controller 2 circuit is made up of anti-phase adder, multiplier, inverter and inverting integrator, anti-phase adder input connects the reversed-phase output on the in-phase output end containing Lorenz system I circuit the 3rd tunnel of y side and Lorenz system II circuit the 3rd tunnel containing y side, and multiplier (A10) exports the anti-phase adder input on Lorenz system II circuit the 3rd tunnel connect containing y side.

Beneficial effect: the present invention is on the basis of three-dimensional chaotic system, and the present invention utilizes memristor to propose a kind of Lorenz hyperchaotic system containing y side, and proposes the adaptive synchronicity method of this chaos system on this basis.

Accompanying drawing explanation

Fig. 1 is the electrical block diagram of the preferred embodiment of the present invention.

Fig. 2 is Lorenz system I circuit diagram in the present invention.

Fig. 3 is the circuit diagram of memristor I in the present invention.

Fig. 4 is Lorenz system II circuit diagram in the present invention.

Fig. 5 is the circuit diagram of memristor II in the present invention.

Fig. 6 is the circuit diagram of middle controller 1 of the present invention.

Fig. 7 is the circuit diagram of middle controller 2 of the present invention.

Fig. 8 is the synchronous circuit design sketch of x1 and x2 in the present invention.

Embodiment

Below in conjunction with accompanying drawing and preferred embodiment, the present invention is further described in detail, see Fig. 1-Fig. 8.

1., based on the adaptive synchronicity method of memristor containing the Lorenz hyperchaotic system of y side, it is characterized in that, comprise the following steps:

(1) the Lorenz chaos system i containing y side is:

$\left\{\begin{array}{cc}\begin{array}{c}dx/dt=a(y-x)\\ dy/dt=bx-y+xz\\ dz/dt=y^2-cz\end{array}& a=10,b=28,c=10/3\end{array}\right.---i$

In formula, x, y, z are state variable;

(2) the memristor model that the present invention adopts is ii:

Wherein represent that magnetic control recalls resistance, represent magnetic flux, m, n be greater than zero parameter;

(3) obtaining iii to the memristor differentiate of ii is:

represent and recall and lead, m, n be greater than zero parameter;

(4) using memristor model iii as unidimensional system variable, be added on second equation of three-dimensional chaotic system i, obtain and a kind ofly there is memristor containing the Lorenz hyperchaotic system iv of y side:

$\left\{\begin{array}{c}dx/dt=a(y-x)\\ dy/dt=bx-y+xz-kxW\left(u\right)\\ dz/dt=y^2-cz\\ du/dt=-x\end{array}\right.---iv$

In formula, x, y, z, u are state variable, parameter value a=10, b=28, c=10/3, k=1, m=8, n=0.006;

(5) with described in iv based on memristor containing y side Lorenz hyperchaotic system for drive system v:

$\left\{\begin{array}{c}{\mathrm{dx}}_1/dt=a(y_1-x_1)\\ {\mathrm{dy}}_1/dt={\mathrm{bx}}_1-y_1+x_1{z}_1-{\mathrm{kx}}_{1}W\left(u_1\right)\\ {\mathrm{dz}}_1/dt={y_1}^2-{\mathrm{cz}}_1\\ {\mathrm{du}}_1/dt=-x_1\end{array}\right.---v$

X in formula ₁, y ₁, z ₁, u ₁for state variable, parameter value a=10, b=28, c=10/3, k=1, m=8, n=0.006

(6) to contain the Lorenz hyperchaotic system of x side for responding system vi based on memristor described in iv:

$\left\{\begin{array}{c}{\mathrm{dx}}_2/dt=a(y_2-x_2)+v_1\\ {\mathrm{dy}}_2/dt={\mathrm{bx}}_2-y_2+x_2{z}_2-{\mathrm{kx}}_{2}W\left(u_2\right)+v_2\\ {\mathrm{dz}}_2/dt={y_2}^2-{\mathrm{cz}}_2+v_3\\ {\mathrm{du}}_2/dt=-x_2+v_4\end{array}\right.---vi$

X in formula ₂, y ₂, z ₂, u ₂for state variable, v ₁, v ₂, v ₃, v ₄for controller, parameter value a=10, b=28, c=10/3, k=1, m=8, n=0.006

(7) error system e is defined ₁=(x ₂-x ₁), e ₂=(z ₂-z ₁), when controller get be worth as follows time, drive chaos system v and response chaos system vi to realize synchronous;

$\left\{\begin{array}{c}{v}_1=-e_1\∫e_1^{2}dt\\ v_2=0\\ v_3=-e_2\∫e_2^{2}dt\\ v_4=0\end{array}\right.---vii$

By the Chaotic Synchronous circuit driving chaos system v and response chaos system vi to form be:

$\left\{\begin{array}{c}{\mathrm{dx}}_1/dt=a(y_1-x_1)\\ {\mathrm{dy}}_1/dt={\mathrm{bx}}_1-y_1+x_1{z}_1-{\mathrm{kx}}_{1}W\left(u_1\right)\\ {\mathrm{dz}}_1/dt={y_1}^2-{\mathrm{cz}}_1\\ {\mathrm{du}}_1/dt=-x_1\\ {\mathrm{dx}}_2/dt=a(y_2-x_2)-(x_2-x_1)\∫{(x_2-x_1)}^{2}dt\\ {\mathrm{dy}}_2/dt={\mathrm{bx}}_2-y_2+x_2{z}_2-{\mathrm{kx}}_{2}W\left(u_2\right)\\ {\mathrm{dz}}_2/dt={y_2}^2-{\mathrm{cz}}_2-(z_2-z_1)\∫{(z_2-z_1)}^{2}dt\\ {\mathrm{du}}_2/dt=-x_2\end{array}\right.---ix$

2. one kind contains the adaptive synchronicity circuit of the Lorenz hyperchaotic system of y side based on memristor, it is characterized in that: described circuit is a kind of to be made up of drive system and responding system based on the adaptive synchronicity of memristor containing the Lorenz hyperchaotic system of y side, drive system comprises Lorenz system I circuit containing y side and memristor I circuit, responding system comprises controller 1 circuit, controller electricity 2 tunnels, containing the Lorenz system II circuit of y side and memristor II circuit, driving system circuit drives responding system circuit by signal;

Containing the Lorenz system I circuit of y side by integrated operational amplifier (LF347N) and resistance, the three anti-phase adders in tunnel that electric capacity is formed, inverting integrator and inverter and multiplier composition, the anti-phase anti-phase output of the adder input termination first via of the first via and the homophase on the second tunnel export, the anti-phase adder input on the second tunnel connects the in-phase output end of the first via, connect the reversed-phase output on the second tunnel, the input of multiplier (A2) connects the anti-phase output of the first via and the homophase output on the 3rd tunnel respectively, the input of the anti-phase adder in output termination second tunnel of multiplier (A2), the anti-phase input on the 3rd tunnel connects the in-phase output end on the 3rd tunnel, the input of multiplier (A3) connects the in-phase input end on the second tunnel and the inverting input on the second tunnel respectively, the anti-phase adder input on output termination the 3rd tunnel of multiplier (A3),

Memristor I circuit is made up of integrated operational amplifier (LF353N) and 2 multipliers (AD633JN), integrated operational amplifier (LF353N) and resistance, electric capacity form inverting integrator, the first via homophase of input termination Lorenz system I circuit exports, and output connects the input of the second anti-phase adder in tunnel of the Lorenz system I circuit containing y side by 2 multipliers;

Containing the Lorenz system II circuit of y side by integrated operational amplifier (LF347N) and resistance, the three anti-phase adders in tunnel that electric capacity is formed, inverting integrator and inverter and multiplier composition, the anti-phase anti-phase output of the adder input termination first via of the first via and the homophase on the second tunnel export, the anti-phase adder input on the second tunnel connects the in-phase output end of the first via, connect the reversed-phase output on the second tunnel, the input of multiplier (A4) connects the anti-phase output of the first via and the homophase output on the 3rd tunnel respectively, the input of the anti-phase adder in output termination second tunnel of multiplier (A4), the anti-phase input on the 3rd tunnel connects the in-phase output end on the 3rd tunnel, the input of multiplier (A5) connects the in-phase input end on the second tunnel and the inverting input on the second tunnel respectively, the anti-phase adder input on output termination the 3rd tunnel of multiplier (A5),

Memristor II circuit is made up of integrated operational amplifier (LF353N) and 2 multipliers (AD633JN), integrated operational amplifier (LF353N) and resistance, electric capacity form inverting integrator, the first via homophase of input termination Lorenz system II circuit exports, and output connects the input of the second anti-phase adder in tunnel of the Lorenz system II circuit containing y side by 2 multipliers;

Controller 1 circuit is made up of anti-phase adder, multiplier, inverter and inverting integrator, anti-phase adder input connects the reversed-phase output of the in-phase output end containing the Lorenz system I circuit first via of y side and the Lorenz system II circuit first via containing y side, and multiplier (A9) exports the anti-phase adder input of the Lorenz system II circuit first via connect containing y side;

Controller 2 circuit is made up of anti-phase adder, multiplier, inverter and inverting integrator, anti-phase adder input connects the reversed-phase output on the in-phase output end containing Lorenz system I circuit the 3rd tunnel of y side and Lorenz system II circuit the 3rd tunnel containing y side, and multiplier (A10) exports the anti-phase adder input on Lorenz system II circuit the 3rd tunnel connect containing y side.

Certainly, above-mentioned explanation is not to the restriction of invention, and the present invention is also not limited only to above-mentioned citing, and the change that those skilled in the art make in essential scope of the present invention, remodeling, interpolation or replacement, also belong to protection scope of the present invention.

Claims (2)

1., based on the adaptive synchronicity method of memristor containing the Lorenz hyperchaotic system of y side, it is characterized in that, comprise the following steps:

(1) the Lorenz chaos system i containing y side is:

In formula, x, y, z are state variable;

(2) the memristor model that the present invention adopts is ii:

Wherein represent that magnetic control recalls resistance, represent magnetic flux, m, n be greater than zero parameter;

(3) obtaining iii to the memristor differentiate of ii is:

represent and recall and lead, m, n be greater than zero parameter;

(4) using memristor model iii as unidimensional system variable, be added on second equation of three-dimensional chaotic system i, obtain and a kind ofly there is memristor containing the Lorenz hyperchaotic system iv of y side:

In formula, x, y, z, u are state variable, parameter value a=10, b=28, c=10/3, k=1, m=8, n=0.006;

(5) with described in iv based on memristor containing y side Lorenz hyperchaotic system for drive system v:

X in formula ₁, y ₁, z ₁, u ₁for state variable, parameter value a=10, b=28, c=10/3, k=1, m=8, n=0.006

(6) to contain the Lorenz hyperchaotic system of x side for responding system vi based on memristor described in iv:

X in formula ₂, y ₂, z ₂, u ₂for state variable, v ₁, v ₂, v ₃, v ₄for controller, parameter value a=10, b=28, c=10/3, k=1, m=8, n=0.006

(7) error system e is defined ₁=(x ₂-x ₁), e ₂=(z ₂-z ₁), when controller get be worth as follows time, drive chaos system v and response chaos system vi to realize synchronous;

By the Chaotic Synchronous circuit driving chaos system v and response chaos system vi to form be:

。

2. one kind contains the adaptive synchronicity circuit of the Lorenz hyperchaotic system of y side based on memristor, it is characterized in that: described circuit is a kind of to be made up of drive system and responding system based on the adaptive synchronicity of memristor containing the Lorenz hyperchaotic system of y side, drive system comprises Lorenz system I circuit containing y side and memristor I circuit, responding system comprises controller 1 circuit, controller electricity 2 tunnels, containing the Lorenz system II circuit of y side and memristor II circuit, driving system circuit drives responding system circuit by signal;

Containing the Lorenz system I circuit of y side by integrated operational amplifier (LF347N) and resistance, the three anti-phase adders in tunnel that electric capacity is formed, inverting integrator and inverter and multiplier composition, the anti-phase anti-phase output of the adder input termination first via of the first via and the homophase on the second tunnel export, the anti-phase adder input on the second tunnel connects the in-phase output end of the first via, connect the reversed-phase output on the second tunnel, the input of multiplier (A2) connects the anti-phase output of the first via and the homophase output on the 3rd tunnel respectively, the input of the anti-phase adder in output termination second tunnel of multiplier (A2), the anti-phase input on the 3rd tunnel connects the in-phase output end on the 3rd tunnel, the input of multiplier (A3) connects the in-phase input end on the second tunnel and the inverting input on the second tunnel respectively, the anti-phase adder input on output termination the 3rd tunnel of multiplier (A3),

Memristor I circuit is made up of integrated operational amplifier (LF353N) and 2 multipliers (AD633JN), integrated operational amplifier (LF353N) and resistance, electric capacity form inverting integrator, the first via homophase of input termination Lorenz system I circuit exports, and output connects the input of the second anti-phase adder in tunnel of the Lorenz system I circuit containing y side by 2 multipliers;

Containing the Lorenz system II circuit of y side by integrated operational amplifier (LF347N) and resistance, the three anti-phase adders in tunnel that electric capacity is formed, inverting integrator and inverter and multiplier composition, the anti-phase anti-phase output of the adder input termination first via of the first via and the homophase on the second tunnel export, the anti-phase adder input on the second tunnel connects the in-phase output end of the first via, connect the reversed-phase output on the second tunnel, the input of multiplier (A4) connects the anti-phase output of the first via and the homophase output on the 3rd tunnel respectively, the input of the anti-phase adder in output termination second tunnel of multiplier (A4), the anti-phase input on the 3rd tunnel connects the in-phase output end on the 3rd tunnel, the input of multiplier (A5) connects the in-phase input end on the second tunnel and the inverting input on the second tunnel respectively, the anti-phase adder input on output termination the 3rd tunnel of multiplier (A5),

Memristor II circuit is made up of integrated operational amplifier (LF353N) and 2 multipliers (AD633JN), integrated operational amplifier (LF353N) and resistance, electric capacity form inverting integrator, the first via homophase of input termination Lorenz system II circuit exports, and output connects the input of the second anti-phase adder in tunnel of the Lorenz system II circuit containing y side by 2 multipliers;

Controller 1 circuit is made up of anti-phase adder, multiplier, inverter and inverting integrator, anti-phase adder input connects the reversed-phase output of the in-phase output end containing the Lorenz system I circuit first via of y side and the Lorenz system II circuit first via containing y side, and multiplier (A9) exports the anti-phase adder input of the Lorenz system II circuit first via connect containing y side;

Controller 2 circuit is made up of anti-phase adder, multiplier, inverter and inverting integrator, anti-phase adder input connects the reversed-phase output on the in-phase output end containing Lorenz system I circuit the 3rd tunnel of y side and Lorenz system II circuit the 3rd tunnel containing y side, and multiplier (A10) exports the anti-phase adder input on Lorenz system II circuit the 3rd tunnel connect containing y side.