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首先找出保守流x…+x·-x2+B=0(其中0≤B≤0.05)在一定时间内其局域Lyapunov指数小于零，限制在Poincaré截面上的有限时间收敛区，然后通过周期脉冲方法得到稳定的周期轨道.用这一方法，控制了系统的高周期轨道.此方法具有一定的抗噪声能力.Firstly, we find out the convergent scope in limited time of the conservation flow x…+x·-x2+B=0 (0≤B≤0.005) in a certain time, whose scope Lyapunov exponents is below zero, and restrained in Poincaré section, and then get the steady periodic orbits through periodic pulse method. With the above-mentioned rule, we can control systematic high periodic orbits.This rule is, to some extent, robust against external noise.
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