Conclusion UPOs can be used to characterize the dynamics of HRV and is a potential method to analyze HRV.

结论非稳定周期轨道可以刻划hrv的动力学性质，是分析HRV的潜在的方法。

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The advantage of this method is that it does not need to know any information about the UPOs embeded in spatiotemporal chaotic system.

这一控制方法的优点是不需要获取时空混沌系统中不稳定周期轨道的任何信息，且控制参数与被控系统的参数和变量的取值无关。

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The results show that the UPOs embedded in the chaotic system can be stably controlled by changing the linear transformation matrix of system variables.

结果表明，通过改变系统变量之间的线性变换矩阵，可以实现混沌系统中各种不稳定周期轨道的稳定控制。

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