基于改进脉冲控制方法的超混沌系统同步
Synchronization of hyperchaotic systems via improved impulsive control method
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摘要: 针对一类整数阶与分数阶超混沌系统的同步问题,分别提出了改进的脉冲同步方法.基于Lyapunov稳定性理论与脉冲微分方程理论,给出超混沌系统一组新的全局渐近同步判据.特别地,当脉冲间距与脉冲控制增益为常数时,可获得更为简单和实用的同步判据.与现有结果相比,所得充分条件更次保守且更为实用.通过对超混沌Chen系统同步的数值仿真研究,验证了所提方法的有效性和可行性.Abstract: The improved impulsive control method is proposed to realize the complete synchronization of integral and fractional order hyperchaotic systems. Some effective sufficient conditions are produced to realize the asymptotical stability of synchronization error system. In particular, some simple and practical conditions are derived in synchronizing the chaotic systems by choosing constant impulsive distances and control gains. Compared with the existing results, the main results are less conservative by relaxing some unnecessary inequality constraints. Simulation results show the effectiveness and the feasibility of the proposed impulsive controller.
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