• 대한의용생체공학회:의공학회지
• /
• 제24권4호
• /
• pp.309-318
• /
• 2003

본 연구는 현재 산업용으로 널리 사용되고 있는 수직 다관절 6자유도 로봇을 의료용 목적으로 적용하기 위해 수행하였다. 이미 산업용으로 제안되어 검증된 로봇을 사용한다면 비용, 시간적인 면에서 상당한 잇점이 있다. 따라서 본 논문에서는 산업용으로 제안된 로봇을 의료 목적으로 사용하여 연구하였다. 본 시스템은 뇌졸중 환자와 같이 한쪽 팔을 다친 사람들을 위해 제안하였다. 한쪽 팔이 비정상이고 다른 팔이 정상인 환자를 대상으로 정상인 팔의 움직임을 획득하여 마비되거나 정상으로 움직이기 어려운 팔을 운동시키도록 마스터-슬레이브 시스템을 구성하였다. 또한 팔꿈치와 어깨의 기구학을 해석하기 위하여 기존의 인체에 관한 연구 결과를 적용하였다. 또한 슬레이브 로봇에 힘 센서를 부착하여 환자의 재활 정도를 측정할 수 있도록 하였으며, 위험 상황에 대비함으로써 슬레이브 로봇의 안전성을 높였다. 이러한 시스템으로 인해 물리치료사의 도움 없이 환자 혼자 운동이 가능하도록 시스템을 구성하였다. 제안된 시스템과 제어 알고리즘은 실험과 시뮬레이션을 통하여 타당성을 검증하였다.

• 재활복지공학회논문지
• /
• 제2권1호
• /
• pp.45-49
• /
• 2009

본 논문에서는 상지마비 환자의 재활훈련용 로봇의 인터페이스에 사용할 수 있는 데이터글로브를 제안한다. 데이터글로브는 7개의 유연한 각도 센서를 적용하여 손가락과 손목의 굽힘 각도를 측정할 수 있다. 개발된 데이터글로브의 성능은 3D 그래픽을 이용한 시각화로서 확인하였다. 실험결과로부터 개발한 데이터글로브는 손의 움직임을 측정하고, 인터페이스로 사용할 수 있음을 보인다.

• 대한전자공학회:학술대회논문집
• /
• 대한전자공학회 2002년도 하계종합학술대회 논문집(5)
• /
• pp.125-128
• /
• 2002

One of ultimate purpose that performance to information society been going recently festinately intends is in human's welfare improvement. Also, research about assist for disabled person that belong on category that is disabled persons' cloth elevation estranged in the past according to disabled person population's increase and change of advanced human rights consciousness to ruins of industrial society and traffic civilization is afoot abuzz. Guidance robot of sight obstacle can speak as its part. This research is thing about voice system about location set and search in guidance robot that is embodying to make sight disabled person can visit schedule place smoothly.

• 제어로봇시스템학회:학술대회논문집
• /
• 제어로봇시스템학회 2004년도 ICCAS
• /
• pp.1525-1529
• /
• 2004

Most of the recently developed robots are human friendly robots which imitate an animal or human such as entertainment robot, bio-mimetic robot and humanoid robot. Interest in these robots are increasing since the social trend is focused on health, welfare, and graying. By these social backgrounds, robots become more human friendly and suitable for home or personal environment. The more bio-mimetic robots resemble living creature, the more human feels familiarity. People feel close friendship not only when they feed a pet, but also when they watch a pet having the food. Most of entertainment robots and pet robots use internal-type batteries and have a self-recharging function. Entertainment robots and pet robots with internal-type batteries are not able to operate during charging the battery. So far there have been a few robots that do not depend on a battery. However, they need a bulky energy conversion unit and a slug or foods as an energy source, which is not suitable for home or personal application. In this paper, we introduce a new bio-mimetic entertainment robot with autonomous feeding functionality, called ELIRO-1(Eating LIzard RObot version 1). The ELIRO-1 is able to find a food (a small battery), feed by itself and evacuate. We describe the design concept of the autonomous feeding mechanism of the ELIRO-1, characteristics of sub-parts of the manufactured mechanism and the control system.

• PNF and Movement
• /
• 제20권2호
• /
• pp.295-306
• /
• 2022

Purpose: This study aimed to investigate the effect of robot-assisted gait training on the active ranges of motion, gait abilities, and biomechanical characteristics of gait in patients who underwent lower extremity surgery, and to verify the effectiveness and clinical usefulness of robot-assisted gait training. Methods: This study was conducted on 14 subjects who underwent lower extremity surgery. The subjects participated in robot-assisted gait training for 2 weeks. The active ranges of motion of the lower extremities were evaluated, and gait abilities were assessed using 10-m and 2-min walk tests. An STT Systems Inertial Measurement Unit was used to collect data on biomechanical characteristics during gait. Spatiotemporal parameters were used to measure cadence, step length, and velocity, and kinematic parameters were used to measure hip and knee joint movement during gait. Results: Significant improvements in the active ranges of motion of the hip and knee joints (flexion, extension, abduction, and adduction) and in the 10-m and 2-min walk test results were observed after robot-assisted gait training (p < 0.05). In addition, biomechanical characteristics of gait, spatiotemporal factors (cadence, step length, and velocity), and kinematic factors (gait hip flexion-extension, internal rotation-external rotation angle, and knee joint flexion-extension) were also significantly improved (p < 0.05). Conclusion: The results of this study are of clinical importance as they demonstrate that robot-assisted gait training can be used as an effective intervention method for patients who have undergone lower extremity surgery. Furthermore, the findings of this study are clinically meaningful as they expand the scope of robot-assisted gait training, which is currently mainly applied to patients with central nervous system conditions.

• 재활복지공학회논문지
• /
• 제9권4호
• /
• pp.265-273
• /
• 2015

자폐스펙트럼장애 아동은 시각적 처리, 체계화와 같은 강점을 지니며, 사물 및 기계에 대한 흥미와 관심을 나타낸다. 이 같은 맥락에서 로봇이 자폐스펙트럼장애 아동의 재활에 유용한 것으로 제안되고 있다. 즉 로봇은 자폐스펙트럼장애 아동의 관심을 유발하고, 주의를 집중하게 하고, 단순화된 사회적 자극을 제시하며, 반복적용이 가능하고, 대상에 따른 프로그래밍이 가능하다. 이에 본 연구에서는 자폐스펙트럼장애 아동의 재활을 위한 국내 로봇 관련 연구를 살펴보고자 하였다. 이를 위해 자폐, 로봇을 키워드로 검색하여 11편의 국내 문헌을 최종 선정하고, 활용 로봇, 로봇 제시자극, 실험절차 및 종속변인에 따라 문헌을 내용 분석하였다.

• 대한기계학회:학술대회논문집
• /
• 대한기계학회 2004년도 춘계학술대회
• /
• pp.810-815
• /
• 2004

In this paper, we propose new parallel mechanism of a 3 dimensional biped robot whose each leg is composed of two 3-dof parallel platforms linked serially. This proposed parallel mechanism is able to move freely in the man-made environment and is applied to various fields, such as medical, welfare, and so on. And a total weight of each leg is expected to be lighter than serial linked leg. One side leg consists of a 3-dof orientation platform and 3-dof asymmetric parallel platform. The former consists of three active linear actuators and seven passive joints, and the latter of two active linear actuators, one active rotational actuator and eight passive joints. Thus, there are two kinds of parallel platforms each chain's elements and active joint's positions are different for the biped robot to move freely like a serial link without the kinematics constraints. The effectiveness and the performance of the proposed parallel mechanism and locomotion trajectory are shown in computer simulations with a 12-DOF parallel biped robot.

• 재활복지공학회논문지
• /
• 제8권2호
• /
• pp.73-78
• /
• 2014

이 논문은 팔꿈치 재활 훈련에 있어서 거울치료 기법을 적용한 착용형 재활로봇을 제안한다. 거울치료는 건측의 팔꿈치 동작을 측정하여, 환측의 팔꿈치 훈련을 하는 것이다. 이를 위해 환측의 재활을 위한 착용형 장치 뿐만 아니라 건측 팔꿈치 동작을 측정하기 위한 착용형 센서도 개발하였다. 착용형 장치는 인체의 팔꿈치 구조를 고려하여 설계하였다. 착용형 센서는 굽힘센서와 광파이버를 이용한 센서를 각각 개발하여 센터의 특성을 평가하였다. 개발된 거울치료형 팔꿈치 재활로봇은 피험자의 동작에 따른 동작특성을 3차원 모션 측정장치로 평가하였다. 실험의 결과는 이 연구에서 개발된 착용형 팔꿈치 재활로봇이 적용 가능함을 보였다.

• Physical Therapy Rehabilitation Science
• /
• 제6권3호
• /
• pp.106-112
• /
• 2017

Objective: Robot assisted gait training is implemented as part of therapy for the recovery of gait patterns in recent clinical fields, and the scope of implications are continuously increasing. However clear therapy protocols of robot assisted gait training are insufficent. The purpose of this study was to investigate the effects of robot-assisted gait training applied with guidance force on balance and gait performance in persons with hemiparetic stroke. Design: Two group pre-test post-test design. Methods: Nineteen persons were diagnosed with hemiparesis following stroke participated in this study. The participants were randomly assigned to the unilateral guidance group or bilateral guidance group to conduct robot-assisted gait training. All participants underwent robot-assisted gait training for twelve sessions (30 min/d, 3 d/wk for 4 weeks). They were assessed with gait parameters (gait velocity, cadence, step length, stance phase, and swing phase) using Optogait. This study also measured the dynamic gait index (DGI), the Berg balance scale (BBS) score, and timed up and go (TUG). Results: After training, BBS scores were was significantly increased in the bilateral training group than in the unilateral guidance group (p<0.05). Spatiotemporal parameters were significantly changed in the bilateral training group (gait speed, swing phase ratio, and stance phase ratio) compared to the unilateral training group (p<0.05). Conclusions: The results of this study suggest that robot-assisted gait training show feasibility in facilitating improvements in balance and gait performance for subacute hemiparetic stroke patients.

• 제어로봇시스템학회논문지
• /
• 제16권10호
• /
• pp.939-947
• /
• 2010

With the rising numbers of elderly and disabled people, the demand for welfare services using a robotic system and not involving human effort is likewise increasing. This study deals with a mobile-robot system combined with a BWS (Body Weight Support) system for gait rehabilitation. The BWS system is designed via the kinematic analysis of the robot's body-lifting characteristics and of the walking guide system that controls the total rehabilitation system integrated in the mobile robot. This mobile platform is operated by utilizing the AGV (Autonomous Guided Vehicle) driving algorithm. Especially, the method that integrates geometric path tracking and obstacle avoidance for a nonholonomic mobile robot is applied so that the system can be operated in an area where the elderly users are expected to be situated, such as in a public hospital or a rehabilitation center. The mobile robot follows the path by moving through the turning radius supplied by the pure-pursuit method which is one of the existing geometric path-tracking methods. The effectiveness of the proposed method is verified through the real experiments those are conducted for path tracking with static- and dynamic-obstacle avoidance. Finally, through the EMG (Electromyography) signal measurement of the subject, the performance of the proposed system in a real operation condition is evaluated.