Novel chaos source based on quadratic-term nonlinear effect and signal amplitude

Abstract

The invention discloses a novel chaos source circuit based on quadratic-term nonlinear effect and a corresponding signal amplitude and polarity control method. The novel chaos source circuit is characterized by implementing output of a special chaos attractor by adopting a multiplying circuit consisting of three multipliers, an integration summing circuit consisting of seven resistors (including rheostats or potentiometers), three capacitors and three operational amplifiers, and an inverse-phase amplifying circuit consisting of four resistors and two operational amplifiers. The feedback intensity of product signals is partially and synchronously adjusted by the potentiometers, so that the partial and whole control on the amplitudes of output signals can be realized; and the polarities of linear feedback signals can be selectively controlled by switches, so that the polarity control on two paths of chaos signals can be realized. The partial amplitude control provided by the invention gives up the amplitude variation of a variable, and the polarity control only aims at two state variables. The novel chaos source circuit and the signal amplitude and polarity control method have the advantages of simple signal source circuit, special attractor, adjustable amplitude and controllable polarity, and can be widely applied to the fields of chaos radars, secret communication and the like.

Description

technical field [0001] The invention relates to the design of a chaotic dynamic system. The feedback input of three cross-product items is introduced, combined with the feedback input of some linear items, a complex new chaotic attractor is output. The amplitude of the generated chaotic signal can be adjusted through an adjustable resistor or potentiometer, and the polarity of the output signal of the chaotic source can be controlled through a switch to select the polarity of the feedback signal of the linear term. The invention belongs to the fields of chaotic signal source circuit design, chaotic radar, secure communication and the like. Background technique [0002] Chaotic circuits and chaotic systems have received great attention in the fields of scientific and engineering applications in the past few decades, and thus become very active research topics in the field of radar and communication. Chaotic signals often need to be enlarged or reduced in amplitude in engine...

AI Technical Summary

Problems solved by technology

The chaotic system realized based on the nonlinear effect of the quadratic term often has its state variables not easy to adjust

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