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This paper is concerned with online synchronization problem for uncertain discrete chaotic systems. An artificial bee colony (ABC) algorithm approach is newly introduced to solve this problem in a non-Lyapunov way. The feedback control factors' resolving is converted to a series of multi-modal nonnegative functions' minimization, whose minimums can be optimally determined by ABC. The classical Henon...
This paper is concerned with a novel chaos control approach for discrete chaotic systems with rational fraction. An artificial bee colony (ABC) algorithm is newly introduced to solve this problem in a non-Lyapunov way. The approach realize the following three steps by ABC: detecting chaos system's dynamical behaviors such as extreme values and unstable periodic points; directing the system to its...
This paper is concerned with the uncertain parameters and time-delays of nonlinear chaotic systems. In this article, a novel artificial bee colony algorithm (ABC), with optimization technique based on the foraging behavior of honeybees, is newly proposed to solve the problem. A nonnegative multi-modal nonlinear optimization is established, whose minimums correspond to a best combination of parameters...
Considering chaotic synchronization, the TCP protocol is usually adopted to transport encrypted data on networks at present. A block encryption algorithm is proposed to digital speech codes in this paper. The method uses the UDP protocol to cipher text. It partially solves the problem of decryption for receiver when some data packages are lost during transportation. It encrypts message with chaotic...
This paper presents a blind watermark algorithm in mixed transform domain by using chaotic sequence for the watermark locating. After DWT, the DCT is applied on the low frequency and chaotic sequence is used to locate the position of the watermark information in DCT domain. The watermark information is embedded by comparing the frequency coefficients. With favorable transparency, the experimental...
To investigate the inherent chaotic phenomenon in genetic algorithms (GA), a novel chaos control approach through particle swarm optimization (PSO) (CCPSO) with three main processes is proposed. Firstly it detects the dynamical behaviors of a new discrete chaotic system with rational fraction in GA such as its unstable periodic points. Then it directs the chaotic system to its unstable fix point from...
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