Amplitude-adjustable chaotic signal source

Abstract

The invention discloses an amplitude-adjustable chaotic signal source. Integral summability circuits of four branches are used as a framework; the non-linear feedback is realized through a simulation strobing gate circuit and an absolute value calculation unit; by combining the four linear feedback items and one direct current control item, a complicated chaotic sucker with the controllable amplitude value size is output; four paths of chaotic signals are obtained; through the direct current input control in the third dimension, the amplitude regulation on the four-dimensional chaotic signals output by the system is realized. The chaotic signal source can regulate the signal intensity of the chaotic signal source on four branches through a potentiometer or a variable resistor or a power supply direct current voltage source; the regulation on a plurality of feedback items due to scale conversion again and the hardware amplifier can be avoided. The amplitude-adjustable chaotic signal source has the advantages that the circuit realization and debugging difficulty is reduced; the convenience is provided for the application of the chaotic signal source to electronic and information engineering.

Description

technical field [0001] The invention belongs to the technical field of electronics, communication and information engineering, and particularly relates to an amplitude-adjustable hyperchaotic signal source. Background technique [0002] As a kind of broadband random signal, chaotic or hyperchaotic signal has broad application prospects in engineering technology fields such as instrumentation, communication, and radar. Signals used in engineering usually enter the core layer of processing through preprocessing such as amplification or attenuation or signal conditioning. The preprocessing or conditioning circuit of the signal must match the bandwidth of the processed signal to meet the requirements. However, the broadband characteristics of the chaotic signal make the corresponding signal preprocessing or signal conditioning difficult, and any redundant circuit components or additional systems are also easy to cause signal Distortion and deformation. [0003] At present, the...

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Problems solved by technology

[0004] At present, the design of many hyperchaotic circuits is based on the Lorenz system. By adding one dimension and adding new feedback items, hyperchaos is realized. The hyperchaotic systems realized by this method often contain nine or more terms; other hyperchaotic circuits even introduce For more complex nonlinear feedback functions or dimensions exceeding four dimensions, the entire circuit structure is complex, and the amplitude regulation of the corresponding hyperchaotic signal also needs to be adjusted by means of multiple resistors to simultaneously change the coefficients of multiple feedback items inside the system.

Therefore, the reliability of the ultra-chaotic signal output by the circuit is poor, and the debugging is difficult, which is difficult to meet the engineering needs.

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