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Finite-time Synchronous Sliding Mode Control Method for Complex Chaotic Systems with Unknown Parameters Applied to Security Systems

A technology with unknown parameters and chaotic systems, applied in transmission systems, digital transmission systems, advanced technologies, etc., can solve problems such as unfavorable chattering of the system, easy to damage the performance of chaotic systems, etc.

Active Publication Date: 2019-03-29
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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Problems solved by technology

[0003] With the deepening of the research, it is found that the switched control vector can easily destroy the performance of the chaotic system, causing the system to produce unfavorable chattering phenomenon

Method used

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  • Finite-time Synchronous Sliding Mode Control Method for Complex Chaotic Systems with Unknown Parameters Applied to Security Systems
  • Finite-time Synchronous Sliding Mode Control Method for Complex Chaotic Systems with Unknown Parameters Applied to Security Systems
  • Finite-time Synchronous Sliding Mode Control Method for Complex Chaotic Systems with Unknown Parameters Applied to Security Systems

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Embodiment Construction

[0045] like figure 1 As shown, a finite-time synchronous sliding mode control method for complex chaotic systems with unknown parameters includes the following steps:

[0046] A: First, for two complex chaotic systems with unknown parameters, one of the complex chaotic systems with unknown parameters is used as the driving system, and the other complex chaotic system with unknown parameters is used as the response system, and then the drive system and the response system correspond Make a difference to get the error system;

[0047] B: Then design a suitable terminal sliding mode control surface to make the error system reach the desired sliding mode: parameter control law and select the sliding mode control law within a finite time, satisfy the condition that the error system arrives within a finite time, and ensure that the error system has a finite time Realization of internal sliding mode control;

[0048] C: Finally, the parameter control law and the finite-time sliding...

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Abstract

The invention discloses a finite time synchronization sliding-mode control method of a complex chaotic system with unknown parameters. The finite time synchronization sliding-mode control method of the complex chaotic system with unknown parameters comprises the steps of, aiming at a synchronous model of a complex driving system and a complex responding system in synchronization, researching implementation of synchronization of the complex driving system and the complex responding system through sliding-mode control within finite time; and designing a sliding-mode controller by combining with a self-adaption law and a sliding-mode control method within the finite time and based on a Lyapunov stability theory so as to enable the complex driving system and the complex responding system to reach to a given sliding-mode surface within the finite time and enable the complex system to realize chaotic synchronization. As complex variables are adopted by the complex chaotic system with the unknown parameters, variables are doubled, key space is enlarged, a decoder is more difficult to decode, and security of secret communication is improved. Due to the control synchronization of finite time, control efficiency is increased greatly, a plenty of time and vigor is saved, and a certain superiority is obtained.

Description

technical field [0001] The invention relates to the fields of signal processing and secure communication, in particular to a sliding mode control method for finite time synchronization of complex chaotic systems with unknown parameters. Background technique [0002] The synchronization of existing chaotic real systems is mostly one-to-one synchronous control, and Haeri et al. consider using sliding mode variable structure control to realize the synchronization of two chaotic systems. This method can only be achieved when the chaotic system reaches the specified sliding mode surface. To achieve chaos synchronization, it is difficult to achieve chaos synchronization when the system approaches a given sliding mode surface. Based on this, Tavazoei et al. designed the terminal sliding mode control surface, and the chaotic system directly reaches the given sliding mode surface to ensure the synchronization of the chaotic system, so as to avoid the motion process approaching the sl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/00
CPCY02D30/50
Inventor 孙军伟崔光照张勋才李金城王妍王延峰王子成黄春姚莉娜方洁
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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