Title :
Validation of Inverted Pendulum model for gait length calculation
Author :
Cerny, Martin ; Noury, Norbert ; Deplorte, Ludovic
Author_Institution :
Dept. of Cybern. & Biomed., VSB - Tech. Univ. of Ostrava, Ostrava, Czech Republic
Abstract :
The Inverted Pendulum model is one of favorite algorithm used to calculate the length of gait. The human locomotion is approximated by simple pendulum, the influence of knee and ankle movements are not considered. The gait length is calculated from the extremes of vertical position of human Center of Mass (CoM) during gait. This approach is usually used in measurements which uses inertial sensors to measure the position of CoM. The position of CoM is after that calculated usually as double integration of acceleration. This approach causes errors in calculation, which are given by method (integration) and also by tilt of inertial sensor during movement of CoM. The influence of the Inverted Pendulum approach is not usually considered. This article shows the influence of Inverted Pendulum model as a methodology to calculate the length of gait. There were done measurement of human walk by precise Video System.
Keywords :
biomedical measurement; gait analysis; length measurement; measurement errors; medical computing; pendulums; position measurement; sensors; video signal processing; acceleration integration; center of mass; gait length calculation error; human CoM; human locomotion approximation; human walk measurement; inertial sensor; inertial sensors; inverted pendulum model; knee movement; position measurement; video system; Acceleration; Accelerometers; Estimation; Magnetic field measurement; Monitoring; Position measurement; Sensors;
Conference_Titel :
Applied Machine Intelligence and Informatics (SAMI), 2015 IEEE 13th International Symposium on
Conference_Location :
Herl´any
DOI :
10.1109/SAMI.2015.7061861
