Modeling of Body Weight Support System for Person with Gait Disoder

This study designed a body weight support system controlling load on a patient during gait training. The designed system consisted of a tow device, elevation and rotation device, and load control device. The tow device tows a patient using an electric winch, and the elevation and rotation device elevates and rotates the body weight control system using a motor and bearings. And, the load control device controls load on a patient during gait training using elasticity force of two motors and spring. Load on a patient during gait training is measured by a load measurement sensor equipped in the load control system. The load control system controls load on a patient during gait training using the value measured by the load measurement sensor. This study modeled a body weight system to obtain design variables for motors and springs of the load control device by using a dynamics interpretation package, and made a control system to perform a control simulation of the body weight control system. Based on the simulation result, this study intended to design the proposed system as a system controlling load on a patient during gait training.