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Vol. 177, Issue 8, August 2014, pp. 63-68

 

Bullet

 

Wavelet-Based Dynamic Evaluation of Human Equilibrium Function
under Passive Motion
 

1* Jinzhuang XIAO, 1 Ruijing XUE, 1 Jialong QI, 1 Hongrui WANG and 2 Xincai YANG

1 College of Electronic and Information Engineering, Hebei University, Baoding, 071002, China
2 Healthy Rehabilitation Section, Affiliated Hospital of Hebei University, Baoding, 071002, China
* Tel.: 086-13933892126

* E-mail: robot@hbu.edu.cn

 

Received: 21 May 2014 /Accepted: 31 July 2014 /Published: 31 August 2014

Digital Sensors and Sensor Sysstems

 

Abstract: The efficient evaluation of human equilibrium function is important for people with organs degradation and dysfunction. The traditional evaluation of static and dynamic equilibrium function seems efficient, but the prepared participants restricted the experimental results to be objective and genuine. For evaluating the equilibrium function efficiently, we propose a wavelet-based dynamic model of the human body using external excitation. Firstly, we introduce a local linearization method based on the second-order Taylor expansion for simplifying typical linear system model. Secondly, the continuous wavelet transform analysis is applied to process gravity-center data and estimate parameters of the dynamic model. Finally, the settled time of the systemic responding rapidity is evaluated. Furthermore, the index of the equilibrium ability is obtained. Experiment results show the validity and practicability of the proposed method.

 

Keywords: Leave dynamic model, Equilibrium ability, Wavelet analysis, Settling time, Passive motion.

 

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