CN104506300A - Nonlinear chaotic signal generator - Google Patents
Nonlinear chaotic signal generator Download PDFInfo
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- CN104506300A CN104506300A CN201410697635.1A CN201410697635A CN104506300A CN 104506300 A CN104506300 A CN 104506300A CN 201410697635 A CN201410697635 A CN 201410697635A CN 104506300 A CN104506300 A CN 104506300A
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Abstract
The invention discloses a nonlinear chaotic signal generator, and belongs to the technical field of communication. The technical problem to be solved is to provide a nonlinear chaotic signal generator with simple structure and higher stability; the adopted technical scheme includes that the nonlinear chaotic signal generator includes a sinusoidal signal oscillating circuit and a phase-shifting circuit, wherein the sinusoidal signal oscillating circuit includes an operational amplifier U1, and the phase-shifting circuit includes a variable resistor RP1. The whole nonlinear chaotic signal generator is simple in structure, convenient to use and strong in practicability, and is applicable to the technical field of communication.
Description
Technical field
The invention belongs to communication technical field, be specifically related to a kind of non-linear chaotic signal generating device.
Background technology
Chaos is seemingly random, a kind of complex oscillation between rectilinear oscillation and noise that certainty annuity that nonlinear equation describes produces, and is the ubiquitous phenomenon of nonlinear dynamic system; The sensitive dependence to initial value that chaos system causes due to inherent Nonlinear Mechanism, as long as initial condition is error slightly, will progressively nonlinear amplification, accumulation in chaos system, the information of all initial condition will be lost totally, the result of system gained can not be predicted completely, therefore, the long-term action of chaos shows as unpredictability; Due to initial value sensitivity and the broad spectrum activity of chaotic signal, its application in the communications fields such as secure communication, image compression, Testing of Feeble Signals, high sensor has caused the extensive concern of people; Therefore, study and develop chaotic signal generating device to push practical application to chaology most important; Conventional non-linear chaotic signal generating device, is mainly made up of LC oscillating circuit, RC phase-shift circuit; Because the persistent oscillation of LC oscillating circuit can produce sine wave signal, therefore circuit stability is poor, and device reliability is low; Therefore, the chaotic signal generating device that a kind of stability is higher seems particularly important.
Summary of the invention
The present invention overcomes the deficiency that prior art exists, and technical problem to be solved is: provide the non-linear chaotic signal generating device that a kind of structure is simple, stability is higher.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
Non-linear chaotic signal dispensing device, comprising: sinusoidal signal oscillating circuit and phase-shift circuit, and described sinusoidal signal oscillating circuit comprises operational amplifier U1, and described phase-shift circuit comprises variable resistor RP1, the inverting input of described operational amplifier U1 is also connected with one end of resistance R2 behind one end of connecting resistance R1, the other end of resistance R1 is also connected with the first output CH1 of whole device behind the output of one end of connecting resistance R3, operational amplifier U1 and one end of variable resistor RP1, the other end of resistance R3 is connected with one end of electric capacity C1, and the other end of electric capacity C1 one end of connecting resistance R4 are connected with the in-phase input end of operational amplifier U1 with behind one end of electric capacity C2, one end of the other end shunt-wound capacitance C3 of described variable resistor RP1, the in-phase input end of operational amplifier U2, one end of resistance R5, the in-phase input end of operational amplifier U3 is connected with the second output CH2 of whole device with behind one end of resistance R6, the inverting input of operational amplifier U2 is also connected with one end of resistance R8 behind one end of connecting resistance R7, the other end of resistance R8 is also connected with the output of operational amplifier U2 after the other end of connecting resistance R5, the inverting input of operational amplifier U3 is also connected with one end of resistance R10 behind one end of connecting resistance R9, the other end of resistance R10 is also connected with the output of operational amplifier U3 after the other end of connecting resistance R6, the other end of described resistance R2, the other end of resistance R4, the other end of electric capacity C2, the other end of electric capacity C3, the other end of resistance R7 and the equal ground connection of the other end of resistance R9.
The model of described operational amplifier U1 is OP07; The model of described operational amplifier U2 is LF353; The model of described operational amplifier U3 is LF353.
The present invention compared with prior art has following beneficial effect:
The non-linear chaotic signal dispensing device of the present invention, comprising: sinusoidal signal oscillating circuit and phase-shift circuit, sinusoidal signal oscillating circuit comprises operational amplifier U1, and phase-shift circuit comprises variable resistor RP1; Whole device first produces the vibration continued by sinusoidal signal oscillating circuit, and direct current signal is become stablize distortionless sinusoidal signal export, to export the chaotic signal after fork after sinusoidal signal phase shift by phase-shift circuit again, whole apparatus structure is simple, easy to use, practical.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail;
Fig. 1 is circuit structure diagram of the present invention;
In figure, 1 is sinusoidal signal oscillating circuit, and 2 is phase-shift circuit.
Embodiment
As shown in Figure 1, the non-linear chaotic signal dispensing device of the present invention, comprising: sinusoidal signal oscillating circuit 1 and phase-shift circuit 2, and described sinusoidal signal oscillating circuit 1 comprises operational amplifier U1, and described phase-shift circuit 2 comprises variable resistor RP1; The inverting input of described operational amplifier U1 is also connected with one end of resistance R2 behind one end of connecting resistance R1, the other end of resistance R1 is also connected with the first output CH1 of whole device behind the output of one end of connecting resistance R3, operational amplifier U1 and one end of variable resistor RP1, the other end of resistance R3 is connected with one end of electric capacity C1, and the other end of electric capacity C1 one end of connecting resistance R4 are connected with the in-phase input end of operational amplifier U1 with behind one end of electric capacity C2;
One end of the other end shunt-wound capacitance C3 of described variable resistor RP1, the in-phase input end of operational amplifier U2, one end of resistance R5, the in-phase input end of operational amplifier U3 is connected with the second output CH2 of whole device with behind one end of resistance R6, the inverting input of operational amplifier U2 is also connected with one end of resistance R8 behind one end of connecting resistance R7, the other end of resistance R8 is also connected with the output of operational amplifier U2 after the other end of connecting resistance R5, the inverting input of operational amplifier U3 is also connected with one end of resistance R10 behind one end of connecting resistance R9, the other end of resistance R10 is also connected with the output of operational amplifier U3 after the other end of connecting resistance R6, the other end of described resistance R2, the other end of resistance R4, the other end of electric capacity C2, the other end of electric capacity C3, the other end of resistance R7 and the equal ground connection of the other end of resistance R9.
Particularly, in sinusoidal signal oscillating circuit 1, because the frequency of oscillator signal determined by phase equilibrium, after meeting phase equilibrium, oscillating circuit output waveform is made to be distortionless sine wave by the degenerative power of suitable adjustment, in order to set up vibration, make circuit self-excitation, thus produce the vibration continued, direct current signal is become AC signal to export, in the present embodiment, described sinusoidal signal oscillating circuit 1 is made up of amplifying circuit and frequency-selective network, wherein, amplifying circuit is by resistance R, resistance R2 and operational amplifier U1 is formed, get the feature that its input impedance is high and input impedance is low, the frequency-selective network in parallel that frequency-selective network is made up of resistance R3, resistance R4 and electric capacity C1, electric capacity C2, meanwhile, this frequency-selective network doublely can do positive feedback network, further, in the present embodiment, after the sinusoidal signal phase shift produced by described sinusoidal oscillation circuit 1 by phase-shift circuit 2, export the chaotic signal after fork.
In the present embodiment, the model of described operational amplifier U1 is OP07; The model of described operational amplifier U2 is LF353; The model of described operational amplifier U3 is LF353.
The non-linear chaotic signal dispensing device of the present invention, comprise sinusoidal signal oscillating circuit 1 and phase-shift circuit 2, sinusoidal signal oscillating circuit can realize stable sinusoidal signal, and the chaotic signal after fork will be exported after sinusoidal signal phase shift by phase-shift circuit 2, whole apparatus structure is simple, easy to use, has outstanding substantive distinguishing features and significant progress; By reference to the accompanying drawings embodiments of the invention are explained in detail above, but the present invention is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from present inventive concept.
Claims (4)
1. non-linear chaotic signal dispensing device, comprising: sinusoidal signal oscillating circuit (1) and phase-shift circuit (2), is characterized in that: described sinusoidal signal oscillating circuit (1) comprises operational amplifier U1, and described phase-shift circuit (2) comprises variable resistor RP1;
The inverting input of described operational amplifier U1 is also connected with one end of resistance R2 behind one end of connecting resistance R1, the other end of resistance R1 is also connected with the first output CH1 of whole device behind the output of one end of connecting resistance R3, operational amplifier U1 and one end of variable resistor RP1, the other end of resistance R3 is connected with one end of electric capacity C1, and the other end of electric capacity C1 one end of connecting resistance R4 are connected with the in-phase input end of operational amplifier U1 with behind one end of electric capacity C2;
One end of the other end shunt-wound capacitance C3 of described variable resistor RP1, the in-phase input end of operational amplifier U2, one end of resistance R5, the in-phase input end of operational amplifier U3 is connected with the second output CH2 of whole device with behind one end of resistance R6, the inverting input of operational amplifier U2 is also connected with one end of resistance R8 behind one end of connecting resistance R7, the other end of resistance R8 is also connected with the output of operational amplifier U2 after the other end of connecting resistance R5, the inverting input of operational amplifier U3 is also connected with one end of resistance R10 behind one end of connecting resistance R9, the other end of resistance R10 is also connected with the output of operational amplifier U3 after the other end of connecting resistance R6, the other end of described resistance R2, the other end of resistance R4, the other end of electric capacity C2, the other end of electric capacity C3, the other end of resistance R7 and the equal ground connection of the other end of resistance R9.
2. non-linear chaotic signal dispensing device according to claim 1, is characterized in that: the model of described operational amplifier U1 is OP07.
3. non-linear chaotic signal dispensing device according to claim 1, is characterized in that: the model of described operational amplifier U2 is LF353.
4. non-linear chaotic signal dispensing device according to claim 1, is characterized in that: the model of described operational amplifier U3 is LF353.
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| CN201410697635.1A CN104506300A (en) | 2014-11-28 | 2014-11-28 | Nonlinear chaotic signal generator |
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| CN201410697635.1A CN104506300A (en) | 2014-11-28 | 2014-11-28 | Nonlinear chaotic signal generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107707217A (en) * | 2017-11-17 | 2018-02-16 | 西安电子科技大学 | The broadband of high dB gains becomes six active phase shifters of mutual conductance |
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| CN204334598U (en) * | 2014-11-28 | 2015-05-13 | 国家电网公司 | A kind of non-linear chaotic signal generating device |
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| WO2002096053A9 (en) * | 2001-05-24 | 2003-12-04 | Atlinks Usa Inc | Narrow band chaotic frequency shift keying |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107707217A (en) * | 2017-11-17 | 2018-02-16 | 西安电子科技大学 | The broadband of high dB gains becomes six active phase shifters of mutual conductance |
| CN107707217B (en) * | 2017-11-17 | 2021-06-08 | 西安电子科技大学 | high-dB-gain broadband variable-transconductance six-bit active phase shifter |
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Application publication date: 20150408 |