1Professor, Dept. Aeromechanical Engineering, Hanseo University, Taean-Gun, South Korea
2Professor, Dept. Aviation & Public Administration, Hanseo University, Seosan-si, South Korea
3Undergraduate Research Assistant, Dept. Aeromechanical Engineering, Hanseo University, Taean-gun, South Korea
*Corresponding author: Jeong-Hwan Bae, Dept. Aviation & Public Administration, Hanseo University, Seosan-si, South Korea, E-mail: baejh@hanseo.ac.kr
Online published on 21 September, 2018.
This study mainly aims at designing exercise equipment using motor torques instead of weights to provide isotonic exercise with higher exercise efficiency than the existing ones.
The algebraic position analysis of exercise equipment designed based on a four-bar linkage mechanism and motor torque characteristics according to changes in forces applied to the equipment were investigated to provide isotonic exercise even when the force of a user changes.
With the use of a vector loop method, the angular change () of the motor according to changes in the position of the equipment handle was obtained through the four-bar linkage position analysis. The motor torque for providing isotonic exercise to the user according to the change of the angle was also determined.
The motor load type exercise equipment makes it possible to adjust the force at a precise interval(0.1kg) and implement isotonic exercise that can maximize the exercise efficiency.
Four-bar linkage, Isotonic exercise, Vector loop method, Chest press, Feedback control
