• 제어로봇시스템학회논문지
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• 제20권5호
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• pp.513-519
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• 2014

Videoconferencing technology is increasingly used in classrooms to introduce children to people from other countries and cultures in order to provide a wider learning experience. However, with traditional screen-based video conferencing technology, research has shown that it is easy for students to miss non-verbal cues that play a key role in developing human relationships. To investigate how children interact differently when their interactions are mediated through screen-based video communication versus robot-mediated communication, we conducted a study with elementary students in Korea, comparing the use of both technologies to introduce classroom students with peer-aged individuals in America. Our findings show that the children displayed more positive emotions during certain tasks and exhibited more interest and intimacy to remote participants in the context of robot-mediated communication than with video-mediated communication.

• 제어로봇시스템학회논문지
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• 제16권9호
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• pp.840-845
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• 2010

This paper proposes the method indirectly measuring the operating force of the end-effect tip of surgical robot instrument which conducts the surgical operation in the body on behalf of the surgeon's hand. Due to the size and safety obligation to the surgical robot instrument, it is difficult to measure the operation force of its tip like grasping force. However the instrument is driven by cable-pulley torque transmission mechanism and when some force is occurred at the tip, then the reaction force appears on the cable as additional tension. Based on this phenomenon, this paper proposes a method to estimate the operating force from measuring reaction force against the driving motor by using a loadcell. And it induces mathematical equation to calculate the force from loadcell by approaching the modulus of elasticity to high order polynomial. And this paper proves the validity of proposed mechanism by experimental test.

• 한국안전학회지
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• 제28권4호
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• pp.19-25
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• 2013

For safe remote control, information on remote environment has to be delivered to operator realistically, and there have been numerous research efforts on this respect. Among them, haptic technology can significantly enhance safety and overall effectiveness of remote operation by delivering various kinds of information on virtual or real environment to operator. In this study, remote control based on haptic feedback is applied to control of mobile robot moving according to the command from operator avoiding collision with environmental obstacles and maintaining safe distance from them using ultrasonic sensors. Specifically, a remote feedback control structure for mobile robot is proposed. The controller is based on the inner feedback loop that directly utilizes information on distance to obstacles, and the outer feedback loop that the operator directly commands using the haptic device on which the computed reaction force based on the distance information is acting. Effectiveness of the proposed remote control scheme using double feedback loops is verified through a series of experiments on mobile robot.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2002년도 ICCAS
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• pp.105.4-105
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• 2002

The development of a teleoperated mobile robot, Kaerot/m2, has been described. Kaerot/m2 consists of three subsystems - a 4 wheeled mechanism with the dual reconfigurable crawler arms, a thermal image monitoring system , and an extendable long reach mast. The mechanical design, control system of Kaerot/m2 in terms of remote inspection operation at a high radiation level of the Calandria face environment has been shown. Kaerot/m2 is capable of detecting the degraded locations of the Calandria face in a remote manner.

• 한국산업융합학회 논문집
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• 제18권3호
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• pp.150-156
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• 2015

In this paper, it was proposed a new technology to improve the performance of the remote control in virtual reality applications. The operator must know the information of surroundings of the robot, collision possibility of the equipment, and force feedback of the manipulator. The time delay problem occurs in the tele-operating and it causes vibration and expressive power of the manipulator owing to bidirectional force feedback. We presented a new control method to control of the teleoperating system based on serial bus. The reliability is evaluated by simulation.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2001년도 ICCAS
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• pp.30.5-30
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• 2001

This paper describes a new design of blimp having wheeled vehicle part. This system can work both on the ground using wheeled vehicle and in the air using the floating capability of the blimp part. The passive wheeled mechanism in the vehicle part enables the stable taking off, landing on as well as it is greatly helpful to keep a stationary position on the floor. On the other hand, the floating capability enables the wheeled blimp to fly freely regardless of the ground condition or obstacles. The wheeled blimp can be used as an agent robot for the tole-presence application. Using multimedia devices such as camera, speaker, LCD and microphone mounted on the blimp surface, this system can get necessary information at the local site and communicate with person from a distance. As a typical tele-presence application, the wheeled blimp is currently being developed to a tole-guidance robot working in public indoor areas such 35 exhibition halls, departments, hospitals, etc ...

• 제어로봇시스템학회논문지
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• 제22권8호
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• pp.585-589
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• 2016

Recently, the robotic assist system for cardiovascular intervention gets continuously growing interest. The robotic cardiovascular intervention systems are largely two folds, systems for cardiac ablation procedure assist and systems for vascular intervention assist. For the systems, the clinician controls the catheter inserted through blood vessel to the heart via a master console or master manipulator. Most of the current master manipulators have structure of joystick-like pivoting 2 degree of freedom (DOF) handle in the core, which is used in parallel with other sliding switches and input devices. It however is desirable to have customized and optimized design manipulator that can provide clinician with intuitive control of the catheter motion fully utilizing the advantage of the use of robotic structure. A 6 DOF kinematic mechanism that can capture the motion control intention of the clinician in translational 3 DOF and rotational 3 DOF is proposed in this paper. Also, a master-slave motion relationship specially designed for the cardiac catheter manipulation motion is proposed and implemented in an experimental prototype. Design revision for implementation of more efficient motion and experiment in combination with an experimental slave robot system for catheter manipulation are underway.

• 한국시뮬레이션학회논문지
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• 제28권2호
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• pp.149-158
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• 2019

본 연구에서는 전장이나 재난 환경과 같은 인간이 투입되기 힘든 환경에서 인간을 대신하여 부상자 구조 및 위험물 처리 목적으로 개발된 구조로봇의 효율적 개발을 위한 통합 M&S 프레임워크를 소개한다. 개발된 통합 M&S 프레임워크는 계층화, 모듈화된 통합운동제어 소프트웨어의 구조에 기인하여 통합운동제어 소프트웨어 구조는 동일하게 이용하며 로봇 플랫폼을 시뮬레이션 프로그램으로 대체하여 SILS(Software-in-the-Loop Simulation) 개념의 M&S를 가능하게 하였다. 이를 활용하여 로봇 설계 및 로봇 제어 기술의 성능 검증 등의 개발 전 과정을 효율적으로 수행하였고, 비정형 환경에서의 원격 운용성 향상도 가져왔다. 통합 M&S 프레임워크의 적극적인 활용을 통해 구조로봇의 성공적인 개발 및 성능 확인을 완료하였으며, 구조로봇의 주요 기술 중 하나인 가변형상 제어를 통한 주행 안정화 기술 개발 과정에 적용된 통합 M&S 프레임워크의 사례를 통해 효용성을 확인한다.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2003년도 학술대회지
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• pp.634-637
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• 2003

건설 자동화 장비 개발의 성공여부를 판단하고 이를 실용화하기 위해서는 개발 장비의 성능평가 및 분석을 통해 재래식 방식과 비교하여 자동화 방식을 도입함으로써 얻을 수 있는 기대효과가 제시되어야만 한다. 본 연구에서는 최근 국내에서 개발된 흄관매설 자동화 장비의 성능분석을 위한 평가모델 및 방법론을 제시하고 수차례의 현장실험(field trials)을 통해 수집된 실험 데이터를 바탕으로 재래식 흄관매설 방식과 자동화 방식의 성능을 종합적으로 비교${\cdot}$분석함으로써 재래식 방식에 비해 자동화 방식의 도입을 통해 얻을 수 있는 정성적${\cdot}$정량적 기대효과를 제시하였다. 흄관매설 자동화 장비의 성능분석을 위해 본 연구에서 ,제시된 성능분석 프로세스 및 평가모델은 향후 건설자동화 관련 기술개발 시 자동화 장비의 성능분석 및 평가모델을 개발함에 있어 기본적 틀(template)을 제공할 수 있을 것으로 기대된다.

• 한국건설관리학회논문집
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• 제5권1호
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• pp.157-167
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• 2004

건설 자동화 장비 개발의 성공여부를 판단하고 이를 실용화하기 위해서는 개발 장비의 성능평가 및 분석을 통해 재래식방식과 비교하여 자동화 방식을 도입함으로써 얻을 수 있는 기대효과에 대한 검증이 이루어져야 한다. 본 연구에서는 최근 국내에서 개발된 흄관매설 자동화 장비의 성능분석을 위한 평가모델 및 방법론을 구축하고 수차례의 현장실험(field trials)을 통해 수집된 실험 데이터를 바탕으로 재래식 흄관매설 방식과 자동화 방식의 성능을 종합적으로 비교$\cdot$분석함으로써 재래식 방식에 비해 자동화 방식의 도입을 통해 얻을 수 있는 정성적 $\cdot$정량적 기대효과를 제시하였다. 흄관매설 자동화 장비의 성능분석을 위해 본 연구에서 제시한 성능평가 모델 및 방법론은 향후 건설자동화 관련 기술개발 시 자동화 장비의 성능평가 및 분석 모델을 개발함에 있어 기본적 틀(framework)을 제공할 수 있을 것으로 기대된다.