• Proceedings of the Korean Society of Marine Engineers Conference
• /
• 2001.11a
• /
• pp.3-7
• /
• 2001

Although elbows are commonly used in practice, many questions regarding the optimum arrangement still remain unanswered. The effect due to an elbow lasts for a considerable distance downstream of the elbow and is severe when two elbows are in the system. The goal of this study is to provide an effective guide for the optimum arrangement of elbows and the optimum design of the approach piping system.

• ICROS
• /
• v.21 no.2
• /
• pp.25-30
• /
• 2015

본 논문에서는 간병인의 도움없이 자가 보행 재활에 효과적으로 사용될 수 있는 새로운 개념의 가슴 착용형 로봇을 개발하였다. 개발된 로봇의 특징은 크게 세 가지로 나뉜다. 첫째, 구조적 특징으로써, 하박에 착용하는 기존 지팡이 타입의 엘보 크러치와 달리 개발된 로봇은 가슴에 착용되어 착용자의 두 팔을 자유롭게 하는 동시에 팔의 부담을 제거하여 준다. 둘째는 구동 알고리즘의 특징으로써, 가슴부에 부착된 압력센서로부터 사용자의 보행의도를 자동적으로 인식하여 로봇의 다리를 이동시킨다. 또한 착용자의 안전을 위해 초음파 센서를 이용하여 착용자 전방에 장애물이 나타날 시 보행을 멈추고 경고음을 발생시킨다. 마지막으로, 스카치요크 메커니즘을 사용하여 지지다리의 상승과 하강 시 지면 반발력으로 인하여지지 발 상/하강 모터에 과도한 토크가 부과되지 않도록 하였다. 이러한 세 가지 특징으로부터 개발된 로봇이 자가 보행 재활에 효과적으로 사용될 수 있음을 실험적으로 보였으며, EMG (Electromyography) 센서를 이용하여 근력 보조 성능을 정량적으로 검증하였다.

• Journal of Korean Physical Therapy Science
• /
• v.10 no.1
• /
• pp.122-129
• /
• 2003

In this study, a group of 25 patients between the ages of $22{\sim}55$ received acupuncture treatments for tennis elbow. The variance has some high value. 1. The distribution of an age group in 22 to 55 and the average age of men is $40.9{\pm}9.3$ and the average age of women is $39.5{\pm}3.6$. Total average age is $40.4{\pm}8.4$. 2. Before the acupuncture treatments the average pain degree for the group is $4.72{\pm}0.6$ and after treatments, it is $2.36{\pm}1.6$. Statistically, the variance has some high value. 3. There were statistically significant difference in the pain degree before and after the acupuncture treatment according to the age. By these results, acupuncture treatments will be useful to the first-line treatment for tennis elbow.

• Transactions of the Korean Society of Mechanical Engineers A
• /
• v.41 no.9
• /
• pp.825-837
• /
• 2017

This paper describes a novel type of a walking rehabilitation robot that applies robot technologies to crutches used by patients with walking difficulties in the lower body. The primary features of the developed robot are divided into three parts. First, the developed robot is worn on the patient's chest, as opposed to the conventional elbow crutch that is attached to the forearm; hence, it can effectively disperse the patient's weight throughout the width of the chest, and eliminate the concentrated load at the elbow. Furthermore, it allows free arm motion during walking. Second, the developed robot can recognize the walking intention of the patient from the magnitude and direction of the ground reactive forces. This is done using three-axis force sensors attached to the feet of the robot. Third, the robot can perform a stair walking function, which can change vertical movement trajectories in order to step up and down a single stair according to the floor height. Consequently, we experimentally showed that the developed robot can effectively perform walking rehabilitation assistance by perceiving the walking intention of the patient. Moreover we quantitatively verified muscle power assistance by measuring the electromyography (EMG) signals of the muscles of the lower limb.