• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2003.09b
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• pp.1-4
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• 2003

인간의 작업을 보조 혹은 대신하기 위해서 인간과 흡사한 이족보행로봇에 대한 연구가 많이 진행되고 있다. 이족보행로봇이 인간을 대신해서 어떤 작업을 하기 위해서는 작업공간에서의 자유로운 이동과 장애물 대처능력은 반드시 필요한 기능이다. 본 논문에서는 안정된 정적보행 및 장애물을 지능적으로 대처하는 이족보행로봇의 보행알고리즘을 제안하였다. 먼저 장애물 대처가능한 이족보행로봇의 기구 설계 및 제어기 구현에 대하여 설명하고, 인간의 보행 분석 결과를 바탕으로 안정된 정적보행 알고리즘을 제안하였다. 또한 좌우 회전 및 옆걸음을 통한 장애물 회피 알고리즘, 발에 부착된 적외선센서로 장애물을 인식하여 장애물을 넘어가는 보행 알고리즘을 제안하였다. 제안한 보행알고리즘은 이족보행로봇을 제작하여 다양한 작업환경에서 실험으로 성능을 검증하였다.

• Proceeding of EDISON Challenge
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• 2017.03a
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• pp.596-600
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• 2017

이 논문에서는 1자유도 시스템이며, DC모터로 간단히 구동 가능한 로봇으로, Jansen Mechanism을 사용한 4족보행 로봇을 설계 및 제작하고, 센서를 사용한 탐사 수행의 예시로 라인 트레이싱을 구현, 성능 테스트를 통해 차기 연구용 및 단가가 낮은 대량 생산형 로봇으로서의 가능성을 검증한다.

• 전자공학회논문지 IE
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• v.43 no.4
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• pp.136-142
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• 2006

As the function and interface for controlling the robot is more complicated, the robot platform which can link effectively between software and hardware is need to develop the robot easily. In this paper, we developed a humanoid robot that interests in robot industry part for robot platform with network communication function.

• Journal of the Korean Institute of Intelligent Systems
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• v.18 no.4
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• pp.566-571
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• 2008

In this paper, we propose a footstep planning method of biped robot based on the Particle Swarm Optimization(PSO). We define configuration and locomotion primitives for biped robots in the 2 dimensional workspace. A footstep planning method is designed using learning process of PSO that is initialized with a population of random objects and searches for optima by updating generations. The footstep planner searches for a feasible sequence of locomotion primitives between a starting point and a goal, and generates a path that avoids the obstacles. We design a path optimization algorithm that optimizes the footstep number and planning cost based on the path generated in the PSO learning process. The proposed planning method is verified by simulation examples in cluttered environments.

• Journal of the Korean Society of Marine Environment & Safety
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• v.23 no.5
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• pp.574-584
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• 2017

In this paper, the optimizing path finding control method is studied for a Legged-robot. It's named TITAN-VIII. It has a lot of advantages over the wheeled robot in the ability to walk freely on an irregular ground. However, the moving speed on the ground of the Legged-robot is slower than the Wheeled-robot's. Consequently, the purpose of the method is presented in this paper to minimize its time when it walks to a goal. It find the path, our approach is based on an algorithm which is called Dijkstra's algorithm. In the rest of paper, the various posture of the robot is discussed to keep the robot always in the statically stable. Based on above works, the math formulas are presented to determine the joint angles of the robot. After that an algorithm is designed to find and keep robot on the desired trajectory. Experimental results of the proposed method are demonstrated in the last of paper.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2006.05a
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• pp.63-64
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• 2006

In this paper, design modification was performed to improve the structure of ex-developed 12 D.O.F Biped walking robot, KUBIR-1 similar with human beings. The motion of KUBIR-1 was slow and had a limited walking space. Hence I designed an improved BWR named KUBIR-2 with 12 degree of freedom. KUBIR-2 was designed to solve the following problems of KUBIR-1. First, KUBIR-2 was more simply designed in the four-bar-link mechanism, and its weight was reduced. Second, it had the built-in controller and motor driver. Third, walking velocity of KUBIR-2 was increased by improvement of speed and motion joint angle range. In addition to these, we modified the structure of the foot for more stable walking.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2023.11a
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• pp.83-84
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• 2023

4족 보행 로봇을 투입하기 위해서는 로봇을 운반할 수 있는 차량이 필요하며 특히 본 연구에서는 군용 작전 지휘 차량을 벤치 마킹하여 화재 진압용 TCMV(Tactical Command Monitoring Vehicle)를 개발하고자 하였다. TCMV를 통해 4족보행 로봇이 화재 현장에 진압할 수 있도록 시나리오를 개발하고 있으며, 아울러 TCMV의 요구사양을 정의 하기 위하여 소방관을 중심으로 의견을 수렴하여 화재 진압의 전략을 개발하고 있다. 추후 TCMV에 적합한 차량과 각종 모니터링 시스템을 구축해 4족 보행 로봇의 화재 진압 기능과 구조 기능을 극대화 하며 새로운 화재 진압 전술이 될 것으로 기대된다.

• Proceedings of the KSME Conference
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• 2007.05a
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• pp.831-836
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• 2007

This paper proposes an optimal galloping trajectory which costs low energy and guarantees the stability of the quadruped robot. In the realization of the fast galloping, the trajectory design is important. As a galloping trajectory, we propose an elliptic leg trajectory, which provides simplified locomotion to complex galloping motions of animals. However, the elliptic trajectory, as an imitation of animal galloping motion, does not guarantee stability and minimal energy consumption. We propose optimization based on the energy and stability using a genetic algorithm, which provides the robust and global solution to a multi-body, highly nonlinear dynamic system. To evaluate and verify the effectiveness of the proposed trajectory, computer simulations were carried out.

• The Journal of Korea Robotics Society
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• v.2 no.4
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• pp.353-360
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• 2007

This paper proposes the trot gait pattern generation and online control methods for a quadruped robot to carry heavy loads and to move fast on uneven terrain. The trot pattern is generated from the frequency modulated pattern generation method based on the frequency modulated oscillator in order for the legged robots to be operated outdoor environment with the static and dynamic mobility. The efficiency and performance of the proposed method are verified through computer simulations and experiments using qRT-1/-2. In the experiments, qRT-2 which has two front legs driven by hydraulic linear actuators and two rear casters is used. The robot can trot at the speed up to 1.3 m/s on even surface, walk up and down the 20 degree inclines, and walk at 0.7 m/s on uneven surface. Also it can carry over 100 kg totally including 40 kg payload.

• The Journal of Korea Robotics Society
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• v.14 no.3
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• pp.196-202
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• 2019

Snake robots are slower than wheeled robots or legged robots, while they have an excellent terrainability in a disastrous area. Considering their advantages and disadvantages, a legged robot whose legs are snake robots, 'Quadnake' was proposed in this research. Five motions of the snake were analyzed. Applying these motions, Quadnake could implement eight kinds of motions which snake robots and quadruped walking robots can implement. As a result of it, Quadnake can have the advantages of both a snake robot and a walking robot. It is expected to move stably in a harsh terrain with snake's motion and move fast with walking.