scholarly journals Dynamic Motion Analysis Using a Wearable Sensor System in a Stabilometer Installed with Generation Function of Disturbance from a Floor

Proceedings ◽  
2020 ◽  
Vol 49 (1) ◽  
pp. 164
Author(s):  
Yasuhiro Nakamichi ◽  
Nobutaka Tsujiuchi ◽  
Akihito Ito ◽  
Kiyoshi Hirose ◽  
Akiko Kondo
Keyword(s):  
Evaluation Method ◽  
Center Of Pressure ◽  
Reaction Force ◽  
Body Motion ◽  
Joint Torque ◽  
Sensor System ◽  
Wearable Sensor ◽  
Balance Ability ◽  
Torque Analysis ◽  
Short Time

In this study, we developed an evaluation method using posture and joint torque for the evaluation of balance ability. The evaluation and analysis of standing with a disturbance is conducted for effective balance evaluations. Center of pressure information is mainly used for the evaluation of balance ability using a stabilometer. It is necessary for a more detailed analysis to combine the measurements of body motion. The analysis of posture and joint angle is conducted by body-motion measurement, and joint torque is calculated using ground reaction force and posture information. In this study, we estimated posture and joint torque using a wearable sensor system in the balance evaluation of standing using a stabilometer that generates a disturbance. The analytical results indicated the posture information and joint torque. Analysis and feedback in a short time can be conducted using the wearable sensor system.

A-30 A study on accuracy improvement of joint torque estimation by wearable sensor system

2014 ◽  
Vol 2014 (0) ◽  
pp. _A-30-1_-_A-30-7_
Author(s):  
Kiyoshi HIROSE ◽  
Akiko KONDO ◽  
Wataru ADACHI ◽  
Hitoshi DOKI
Keyword(s):  
Joint Torque ◽  
Sensor System ◽  
Wearable Sensor ◽  
Accuracy Improvement ◽  
Torque Estimation

A study on error reduction of joint torque estimation using wearable sensor system

2020 ◽  
Vol 2020 (0) ◽  
pp. 431
Author(s):  
Kiyoshi HIROSE ◽  
Akiko KONDO ◽  
Nobutaka Tsujiuchi ◽  
Akihito Ito
Keyword(s):  
Error Reduction ◽  
Joint Torque ◽  
Sensor System ◽  
Wearable Sensor ◽  
Torque Estimation

A study on error analysis of joint torque estimation using wearable sensor system

2019 ◽  
Vol 2019 (0) ◽  
pp. 459
Author(s):  
Kiyoshi HIROSE ◽  
Akiko KONDO ◽  
Yasuhiro NAKAMICHI ◽  
Akihito ITO ◽  
Nobutaka TSUJIUCHI
Keyword(s):  
Error Analysis ◽  
Joint Torque ◽  
Sensor System ◽  
Wearable Sensor ◽  
Torque Estimation

The Sensitivity of Joint Torques During Running to Forceplate Data Error

2016 ◽  
Vol 138 (11) ◽  
Author(s):  
Anne Schmitz ◽  
Jaclyn Norberg
Keyword(s):  
Center Of Pressure ◽  
A Priori ◽  
Reaction Force ◽  
Analysis Data ◽  
Monte Carlo Analysis ◽  
Joint Torque ◽  
Single Subject ◽  
Joint Torques ◽  
Data Error ◽  
The Relationship

The purpose of this study was to evaluate the relationship between forceplate inaccuracies and joint torques during running. Instrumented gait analysis data were collected on a single subject running above ground. A Monte Carlo analysis was performed using 60 simulations. In each simulation, joint torques were computed as the ground reaction force (GRF) data were perturbed. Errors in joint torques were larger for proximal joints compared to the distal joints. These errors in joint torques were due more to inaccuracies in the GRF magnitude than the center of pressure (COP) measurements. Clinically, these results may be used to determine a priori the forceplate accuracy needed to measure a desired difference in joint torque between patient populations.

A study on application to gait analysis of joint torque estimation using wearable sensor system

2018 ◽  
Vol 2018 (0) ◽  
pp. A-16
Author(s):  
Sota SASAGAWA ◽  
Kiyoshi HIROSE ◽  
Akiko KONDO ◽  
Yasuhiro NAKAMICHI ◽  
Akihoti ITO ◽  
...  
Keyword(s):  
Gait Analysis ◽  
Joint Torque ◽  
Sensor System ◽  
Wearable Sensor ◽  
Torque Estimation

A study on application to gait analysis of joint torque estimation using wearable sensor system

2020 ◽  
Vol 2020 (0) ◽  
pp. A-4-4
Author(s):  
Kazuaki ITO ◽  
Kiyoshi HIROSE ◽  
Akihito ITO ◽  
Nobutaka TSUJIUCHI ◽  
Akiko KONDO ◽  
...  
Keyword(s):  
Gait Analysis ◽  
Joint Torque ◽  
Sensor System ◽  
Wearable Sensor ◽  
Torque Estimation

scholarly journals Estimation of Individual Muscular Forces of the Lower Limb during Walking Using a Wearable Sensor System

2017 ◽  
Vol 2017 ◽  
pp. 1-14 ◽  
Author(s):  
Suin Kim ◽  
Kyongkwan Ro ◽  
Joonbum Bae
Keyword(s):  
Inverse Dynamics ◽  
Reaction Force ◽  
Force Plate ◽  
Force Sensor ◽  
Optimization Method ◽  
Sensor System ◽  
Wearable Sensor ◽  
Static Optimization ◽  
Muscle Groups ◽  
Set Up

Although various kinds of methodologies have been suggested to estimate individual muscular forces, many of them require a costly measurement system accompanied by complex preprocessing and postprocessing procedures. In this research, a simple wearable sensor system was developed, combined with the inverse dynamics-based static optimization method. The suggested method can be set up easily and can immediately convert motion information into muscular forces. The proposed sensor system consisted of the four inertial measurement units (IMUs) and manually developed ground reaction force sensor to measure the joint angles and ground reaction forces, respectively. To verify performance, the measured data was compared with that of the camera-based motion capture system and a force plate. Based on the motion data, muscular efforts were estimated in the nine muscle groups in the lower extremity using the inverse dynamics-based static optimization. The estimated muscular forces were qualitatively analyzed in the perspective of gait functions and compared with the electromyography signal.

Robust Test Method of TSOP PEMs for Space Application

2019 ◽  
Author(s):  
Yasunobu Iwai ◽  
Koichi Shinozaki ◽  
Daiki Tanaka
Keyword(s):  
Evaluation Method ◽  
Low Cost ◽  
Reliability Evaluation ◽  
Test Method ◽  
Thermal Shock Test ◽  
Space Application ◽  
Space Applications ◽  
Limit Test ◽  
Long Time ◽  
Short Time

Abstract Compared with space parts, consumer parts are highly functional, low cost, compact and lightweight. Therefore, their increased usage in space applications is expected. Prior testing and evaluation on space applicability are necessary because consumer parts do not have quality guarantees for space application [1]. However, in the conventional reliability evaluation method, the test takes a long time, and the problem is that the robustness of the target sample can’t be evaluated in a short time. In this report, we apply to the latest TSOP PEM (Thin Small Outline Package Plastic Encapsulated Microcircuit) an evaluation method that combines preconditioning and HALT (Highly Accelerated Limit Test), which is a test method that causes failures in a short time under very severe environmental conditions. We show that this method can evaluate the robustness of TSOP PEMs including solder connections in a short time. In addition, the validity of this evaluation method for TSOP PEM is shown by comparing with the evaluation results of thermal shock test and life test, which are conventional reliability evaluation methods.

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