摘要
本文研究了用正弦信号调制变型蔡氏电路中的电容实现其混沌控制的方法，数值模拟结果表明：如果调制信号的频率大于系统变量的最高频率，则在不同幅度的正弦信号调制下，可使变型蔡氏电路由混沌状态转变到稳定的平衡点和２nＰ周期轨道，而且发现当调制信号的振幅不变，其频率在一定范围内变化时，控制得到的周期轨道保持不变。这表明受控的混沌系统的运动轨道对外部扰动信号的频率具有锁定能力。
The control method for a modified chua's Circuit is investigated by externally sinusoidal modulating its capacitor. Numerical simulation results show that under the modulation by different amplitude of the sinusoidal signals, the modified chua's circuit can be driven to its equilibrium point or 2nＰ periodic orbits from its chaotic state. Moreover, when the amplitude of the modulation signal remain unchanged, while its frequency is changing within a given range, the controlled periodical orbits remains unchanged. This is the evidence that the controlled state-moving orbits of the chaotic system can be stabilized against the frequency changing of external perturbation signals.
出处
《电路与系统学报》
CSCD
2001年第2期90-93,共4页
Journal of Circuits and Systems
基金
国家重点基础研究专项经费(973项目)
国家攀登计划"非线性科学"
国家自然科学基金重点项目(19932020)
国家自然科学基金资
