M. Tsuruoka, Y. Tsuruoka, R. Shibasaki, Y. Yasuoka, and S. Murai (Japan)
AR modeling, COG, power spectrum, standing, walking
A problematic standing balance influences the stability of
the COG (Center of Body Gravity) fluctuation, i.e., the
feedback control movement in the maintenance of
walking sequence. For acquiring time series data of
movement of COG and both hip sides, developed
measuring instruments, which are portable, wearable PC
assisted (WPC), employ one gyro sensor and two
accelerometers. However, the characteristics of
movement are difficult to analyze directly, because of the
complex fluctuations of the raw serial measurement data.
Utilizing AR (Auto Regressive) modeling, the power
spectrum and impulse response of movement factors
enable analysis of their dynamical relations.