TY - GEN

T1 - Development of an inertial type wheelchair dynamometer and its calibration

AU - Hwang, Seonhong

AU - Kim, Seunghyeon

AU - Son, Jongsang

AU - Kim, Youngho

PY - 2011

Y1 - 2011

N2 - A dynamometer is a device for measuring force, moment of force (torque), or power. There are several types of dynamometers. We developed chassis type and inertial type wheelchair dynamometer. The inertial dynamometers should be determined the inertia and resistance. Therefore, we designed calibrating devices and analytical models for static and dynamic calibration of the developed dynamometer. The linear equations for the transducers to convert the outputs from the sensors into the torque were determined by 50.98v-2.44 (right sensor) and 50.16v-3.25 (left sensor) respectively. As a results of the dynamic calibration, the moment of inertia of the fixed part of the roller system was estimated at 0.0344 kg·m2 by using the mobile disk with 0.028 kg·m2. The total resistive torque, when the weight of user-wheelchair system was 77.5kg, estimated at -2.487(±0.161)Nm. Although the developed system has some inevitable limitations, it is expected that the data from the dynamometer would be useful to investigate the kinetics of the wheelchair propulsion.

AB - A dynamometer is a device for measuring force, moment of force (torque), or power. There are several types of dynamometers. We developed chassis type and inertial type wheelchair dynamometer. The inertial dynamometers should be determined the inertia and resistance. Therefore, we designed calibrating devices and analytical models for static and dynamic calibration of the developed dynamometer. The linear equations for the transducers to convert the outputs from the sensors into the torque were determined by 50.98v-2.44 (right sensor) and 50.16v-3.25 (left sensor) respectively. As a results of the dynamic calibration, the moment of inertia of the fixed part of the roller system was estimated at 0.0344 kg·m2 by using the mobile disk with 0.028 kg·m2. The total resistive torque, when the weight of user-wheelchair system was 77.5kg, estimated at -2.487(±0.161)Nm. Although the developed system has some inevitable limitations, it is expected that the data from the dynamometer would be useful to investigate the kinetics of the wheelchair propulsion.

KW - Moment of inertia

KW - Resistive torque

KW - Wheelchair

KW - Wheelchair dynamometer

UR - http://www.scopus.com/inward/record.url?scp=84863044585&partnerID=8YFLogxK

U2 - 10.2316/P.2011.751-039

DO - 10.2316/P.2011.751-039

M3 - Conference contribution

AN - SCOPUS:84863044585

SN - 9780889869035

T3 - Proceedings of the 6th IASTED International Conference on Biomechanics, BioMech 2011

SP - 113

EP - 117

BT - Proceedings of the 6th IASTED International Conference on Biomechanics, BioMech 2011

Y2 - 7 November 2011 through 9 November 2011

ER -