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- Knowing only an approximate unstable period orbit(UPO) embedded in a discrete chaotic attractor, this paper addresses the problem of system stable state in terms of using linear feedback control method. 讨论当已知存在于混沌吸引子中的近似周期轨道，用变量反馈控制方法进行控制时系统稳定状态的情况。
- Study of Distribution of Attractor's Period Orbit 混沌吸引子周期轨道分布的研究
- Period orbit series in unimodal maps 单峰映射的周期轨序
- A controller is designed based on Lyapunov stability theory,and an unstable periodic orbit(UPO) tracking of uncertain chaotic systems is considered. 基于Lyapunov稳定性理论,设计了控制器,实现了快速跟踪混沌系统的不稳定周期轨道。
- The chaotic motion can be controlled to a regular motion via stabilization of the chaotic orbit onto an unstable periodic orbit embedded within the chaotic attractor. 利用压缩映射和线性逼近产生一个参数微扰反馈序列，使混沌轨道稳定在嵌入混沌吸引子内的一个不稳定周期轨道上，实现将混沌运动转化为周期运动。
- There is now clear evidence for substantial numbers of three types of exoplanets;gas giants, hot-super-Earths in short period orbits, and ice giants. 现在有明确的证据说明，有大量的三种类型的外行星：气态行星，近轨道的超热行星，冰行星。
- The periodic orbits of the spherical pendulum are well-known. 球形钟摆的周期性轨道是众所周知的。
- That period was a bright page in the history of Chinese literature. 那个时期是中国文学史上光辉的一页。
- Let us hope that the period of this injustice will be over soon. 让我们希望这个不公正的时期很快结束吧。
- Childhood is a period of rapid growth. 幼年是生长迅速的时期。
- He consulted the chronicles of the period. 他参考了这一时期的编年史。
- It is thought the distribution of unstable periodic orbits determines the dynamical properties of the billiard systems. 因此，对于运动场系统，不稳定周期轨道的分布特征决定了系统的动力学行为。
- He had to decide within a given period. 他得在一定时间内作出决定。
- She has a detailed knowledge of this period. 她对这段时期的情况了解地相当详细。
- In that period auto sales hit a14-year low. 这时期汽车销售量达到14年来最低水平。
- In this period, unemployment reaches record levels. 这段时间的失业人数又达到了创纪录水平。
- It is shown that the numbers of both periodic orbits and homoclinc orbits bifurcated from this kind of homoclinic orbits depend heavily on the strength of the inclination flip. 主要结论为这类系统在分支出一个同宿轨的同时所能分支出的周期轨的个数也依赖于倾斜翻转的强度。
- Which period of history are you studying? 你正在学哪一段历史？
- The KAM torus of chaotic nonintegrable system is damaged with the enhanced disturbance, the survived periodic orbits are movement skeleton of system. 对于耦合不可积系统，随着扰动的增强KAM曲线而逐渐遭到破坏时，存活的周期轨道是系统的运动骨架。
- This paper proposes a new method to get time solutions of periodic orbits and to determine their stability for piecewise linear dynamic systems. 该文提出了分段线性动态系统周期轨道的时域法求解及稳定性判断的新方法。
