基于混沌特性的心音反控制方法研究

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振动与冲击 ›› 2018, Vol. 37 ›› Issue (17) : 178-184.

论文

基于混沌特性的心音反控制方法研究

成谢锋1，2，佘辰俊1，李吉1

作者信息 +

Anti-control method of heart sound based on its chaotic characteristics

CHENG Xiefeng1,2,SHE Chenjun1,LI Ji1

Author information +

文章历史 +

摘要

针对正常心音信号和病理心音信号所存在的混沌特性差异，提出了一种将病理心音对正常心音进行跟踪的心音混沌反控制方法。本文首先提出了心音混沌反控制方法的设计原则和标准，在此基础上设计了一种结合TD与Fuzzy-PID控制理论的心音信号混沌反控制方法，当输入病理心音时，控制方法能根据另一路读取的正常心音实时自整定PID参数，快速地使病理心音跟踪上正常心音。实验结果与定量分析表明，该控制方法跟踪速度快、误差小、鲁棒性好，控制后的病理心音信号可以很好地对正常心音信号进行轨迹跟踪，且混沌特性得到明显增强。这种心音信号混沌反控制方法，可以用于开发心血管疾病的相关医疗辅助理疗设备，具有可行性和实用性。

Abstract

Aiming at chaotic characteristic difference between a normal heart sound signal and a pathological one,an anti-control method for heart sound chaos making the pathological heart sound track the normal one was put forward. Here,firstly,the design principle and standard for the heart sound chaos anti-control method were proposed. Then,a heart sound chaos anti-control method combining TD and Fuzzy-PID control theories was designed. When pathological heart sounds were input,the control method adjusted PID parameters according to the normal heart sound read from the other path to make the former rapidly trace the latter. The test results and quantitative analysis showed that the proposed control method has the advantages of fast tracking speed,small error and good robustness; the controlled pathological heart sound signal can trace the normal one well and its chaotic characteristics are obviously enhanced; this heart sound chaos anti-control method can be used to develop the related medical auxiliary physiotherapy equipment of cardiovascular disease with feasibility and practicability.

导出引用

成谢锋1，2，佘辰俊1，李吉1. 基于混沌特性的心音反控制方法研究[J]. 振动与冲击, 2018, 37(17): 178-184

CHENG Xiefeng1,2,SHE Chenjun1,LI Ji1. Anti-control method of heart sound based on its chaotic characteristics[J]. Journal of Vibration and Shock, 2018, 37(17): 178-184

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