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IEEE/ASME (AIM) International Conference on Advanced Intelligent Mechatronics

作者： Keum-Gang Cha Sung-Min Yoon Hyun-Hee Kim Ki-Yeon Gim Min-Cheol Lee Department of Mechanical Engineering Pusan National University Busan Republic of Korea Interdisciplinary Program in Robotics Pusan National University Busan Republic of Korea School of Mechanical Engineering Pusan National University Busan Republic of Korea

ISBN: (纸本)9781467391085

In this paper, the estimation method of reaction force for electro-hydraulic servo system for movement is discussed. This reaction force estimation method is based on sliding perturbation observer that is robust observer technique. Before estimating reaction force, the modeling of electro-hydraulic servo system is processed. Before the fine modeling parameters of electro-hydraulic servo system, modeling equation is obtained through cylinder equation using expansion and shrinkage stroke process. After finding modeling equation, the obtaining accurate modeling parameter is carried out from signal compression method. After defining modeling parameter, reaction force estimation is operated by sliding perturbation observer. The analysis result of estimation for reaction force will be used for bilateral control with master-slave structure.

关键词： Force Mathematical model Observers Damping Dynamics Uncertainty Valves

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The Finite Element Analysis of Flying Touch Hot Rolling Method Using Ansys Simulation

The Finite Element Analysis of Flying Touch Hot Rolling Meth...

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Asian Control Conference

作者： Hyun-Hee Kim Min-Cheol Lee Interdisciplinary Program in Robotics Pusan National University School of Mechanical Engineering Pusan National University

ISBN: (纸本)9781479978632

In the hot rolling process, the scratches are caused by immense friction between the rollers and the steel plate, and this defect debases the productivity of steelworks. Existing hot strip mills have a structure that fixes the gap between upper and lower rollers;as a result, steel plates inevitably underwent strong friction and shock when passing through the rollers. The new concept, a flying touch method is proposed, which can control the gap between rollers for reducing scratches in hot rolling process. It is essential to simulate in finite element analysis program because the real hot rolling system is too huge and dangerous to have repetitive experiments. This paper introduces the results of the finite element analysis and a method to decrease scratches on the steel plate in hot rolling process.

关键词： Hot rolling process Flying touch Finite element analysis Ansys simulation SMCSPO Impact drop

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Estimated force based velocity synchronization for fly touch control in hot rolling process

Estimated force based velocity synchronization for fly touch...

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IEEE/ASME (AIM) International Conference on Advanced Intelligent Mechatronics

作者： Sung Min Yoon Min Cheol Lee Sung Jin Kim Hyun Hee Kim Keum Gang Cha Graduate School of Mechanical Engineering Pusan National University Kumjeong-ku KR Sch. of Mech. Engeerning Pusan Nat. Unviversity South Korea Interdisciplinary Program in Robotics Pusan National University Kumjeong-ku KR

ISBN: (纸本)9781467391085

In the hot rolling process, scratches are caused by immense friction between the rollers and the steel plate, and this defect reduces the quality of steelworks. To solve this problem, a flying touch method was proposed, which can control the gap between rollers for reducing scratches in hot rolling process. In a flying touch method, it is important that the gap between the rolling rolls can be control precisely and the velocity of rolling rolls can be synchronize to minimize the friction between steel plate and rolling rolls. Therefore, this paper addresses the velocity synchronize control for fly touch method. To reduce friction between steel plate and rolling rolls, this study estimates load torque of rolling rolls using torque estimation method based on SPO and control the velocity of rolling rolls according to estimated load torque. To confirm the performance of the estimated Force based velocity synchronize control, experimental evaluation is performed using down scaled simulator designed in previous study.

关键词： Conferences Mechatronics

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26th Annual Computational Neuroscience Meeting (CNS*2017): Part 3 Antwerp, Belgium. 15-20 July 2017 Abstracts

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BMC NEUROSCIENCE 2017年第SUPPL 1期18卷 95-176页

作者： [Anonymous] Department of Neuroscience Yale University New Haven CT 06520 USA Department Physiology & Pharmacology SUNY Downstate Brooklyn NY 11203 USA NYU School of Engineering 6 MetroTech Center Brooklyn NY 11201 USA Departament de Matemàtica Aplicada Universitat Politècnica de Catalunya Barcelona 08028 Spain Institut de Neurobiologie de la Méditerrannée (INMED) INSERM UMR901 Aix-Marseille Univ Marseille France Center of Neural Science New York University New York NY USA Aix-Marseille Univ INSERM INS Inst Neurosci Syst Marseille France Laboratoire de Physique Théorique et Modélisation CNRS UMR 8089 Université de Cergy-Pontoise 95300 Cergy-Pontoise Cedex France Department of Mathematics and Computer Science ENSAT Abdelmalek Essaadi’s University Tangier Morocco Laboratory of Natural Computation Department of Information and Electrical Engineering and Applied Mathematics University of Salerno 84084 Fisciano SA Italy Department of Medicine University of Salerno 84083 Lancusi SA Italy Dipartimento di Fisica Università degli Studi Aldo Moro Bari and INFN Sezione Di Bari Italy Data Analysis Department Ghent University Ghent Belgium Coma Science Group University of Liège Liège Belgium Cruces Hospital and Ikerbasque Research Center Bilbao Spain BIOtech Department of Industrial Engineering University of Trento and IRCS-PAT FBK 38010 Trento Italy Department of Data Analysis Ghent University Ghent 9000 Belgium The Wellcome Trust Centre for Neuroimaging University College London London WC1N 3BG UK Department of Electronic Engineering NED University of Engineering and Technology Karachi Pakistan Blue Brain Project École Polytechnique Fédérale de Lausanne Lausanne Switzerland Departement of Mathematics Swansea University Swansea Wales UK Laboratory for Topology and Neuroscience at the Brain Mind Institute École polytechnique fédérale de Lausanne Lausanne Switzerland Institute of Mathematics University of Aberdeen Aberdeen Scotland UK Department of Integrativ

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LQR controller design for balancing and driving control of a bicycle robot

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Journal of Institute of Control, robotics and Systems 2014年第5期20卷 551-556页

作者： Kang, Seok-Won Park, Kyung-Il Lee, Jangmyung Department of Interdisciplinary Program in Robotics Pusan National University Korea Republic of School of Electronic Engineering Pusan National University Korea Republic of

This paper proposes a balancing control and driving control of a bicycle robot based on dynamic modeling of the bicycle robot, which has been derived using the Lagrange equations. For the balancing control of the bicycle robot, a reaction wheel pendulum method has been adopted in this research. By using the dynamics equations of the bicycle robot, an LQR controller has been designed for a balancing and driving control of a bicycle robot. The performance of the balance control is verified experimentally before the driving control, which shows a stable posture within one degree vibrations. To show the dynamic characteristics of the bicycle robot during driving, a trapezoidal velocity trajectory is selected as the references. Through simulations and real experiments, the effectiveness of the proposed algorithm has been demonstrated. © ICROS 2014.

关键词： Equations of motion

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Bilateral control for haptic laparoscopic surgery robot

Bilateral control for haptic laparoscopic surgery robot

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2013 44th IEEE International Symposium on robotics, ISR 2013

作者： Yoon, Sung Min Kim, Won Jae Lee, Min Cheol Choi, Woo Hyeok Graduate School of Mechanical Engineering Pusan National University Busan Korea Republic of School of Mechanical Engineering Pusan National University Busan Korea Republic of Interdisciplinary Program in Robotics Pusan National University Busan Korea Republic of

ISBN: (纸本)9781479911738

When using commercialized robot assisted laparoscopic such as Da Vinci, surgeon has met some problem to depend only on the information by visual feedback. To solve this problem, haptic function is required. In order to realize the haptic teleoperation system, force feedback and bilateral control system are needed. The previous researches showed that the perturbation value estimated by sliding perturbation observer(SPO) followed a reaction force loaded on the surgical robot instrument well. This paper addresses a bilateral control which is performed to realize haptic teleoperation based on this estimated force. The experiment results shows that a torque and force sensorless teleoperation system can be implemented using bilateral control structure. © 2013 IEEE.

关键词： Robotic surgery

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Balancing Control of a Ball Robot Based on an Inverted Pendulum

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Journal of Institute of Control, robotics and Systems 2013年第9期19卷 834-838页

作者： Kang, Seok-Won Park, Chan-Ik Byun, Gyu-Ho Lee, Jang-Myung Department of Interdisciplinary Program in Robotics Pusan National University Korea Republic of School of Electronic Engineering Pusan National University Korea Republic of

This paper proposes a new ball robot which has a four axis structure and four motors that directly actuate the ball to move or to maintain the balance of the robot. For the Balancing control, it is possible to use non-model-based controller to control simply without complex formula. All the gains of the controller are heuristically adjusted during the experiments. The tilt angle is measured by IMU sensors, which is used to generate the control input of the roll and pitch controller to make the tilt angle zero. The performance of the designed control system has been verified through the real experiments with the developed ball robot. ©ICROS 2013.

关键词： Inverted pendulum

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Development of master handle for robotic laparoscopy using cable-conduit

Development of master handle for robotic laparoscopy using c...

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SICE Annual Conference

作者： Woo-Hyeok Choi Sung-Min Yoon Min-Cheol Lee Interdisciplinary Program in Robotics Pusan NationalUniversity Busan South Korea Graduate School of Mechanical Engineering Pusan National University Busan South Korea Department of Mechanical Engineering Pusan National University Busan South Korea

ISBN: (纸本)9781479914951

In robotic surgery, a surgeon checks only a surgical site of patient in the progress of surgery by vision and sound information. In order to solve this limited information, the haptic function is necessary. For haptic realization, it requires much more information through various sensors. However, because of the special environment inside human body, it is not easy to apply sensors such as a force sensor. The low inertia master device for laparoscope operation with cable-conduit was developed in previous research to give haptic function. This suggested a possibility of developing a master device by using the cable-conduit. However, since each axis of rotations does not match with human wrist joint, it is very inconvenient to use. This paper suggests a new mechanism design structure to solve these problems of previous work by new form of master device. And it is experimented and analyzed that a cable conduit connected control box can follow well according to a trajectory of one axis's angle.

关键词： Robot sensing systems Trajectory Force Production Industries Surgery

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A study on obstacle detection using 3D Hough transform with corner

A study on obstacle detection using 3D Hough transform with ...

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作者： Hwang, Sun Min Kim, Chi Yen Beak, Jun-Young Eom, Hyeon Seob Lee, Min Cheol Interdisciplinary Program in Robotics Pusan National University Busan Korea Republic of School of Mechanical Engineering Pusan National University Busan Korea Republic of

ISBN: (纸本)9784907764364

Collision avoidance is essential element for safe navigation of mobile robot. In mobile robot system, various sensors are used to recognize or detect objects which have possibility of collision against robot during driving. As inescapable fault of each sensor, many researchers have studied sensor fusion and compensation methods to overcome the problems. Most popular sensors used for mobile robot are laser and ultrasonic sensors. However it is difficult for these sensors to find obstacle in case of a slope road. For the slope environment, this paper studies vision method. Vision sensor can detect slope by using randomized Hough transform (RHT). This paper suggests a method of detecting an obstacle in a complicated space with slant using RHT and corner information. This paper proves to compare the result of presence RHT. © 2010 SICE.

关键词： Mobile robots

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Biomimetic evolutionary analysis: Robotically-simulated vertebrates in a predator-prey ecology

Biomimetic evolutionary analysis: Robotically-simulated vert...

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IEEE Symposium on Artificial Life, ALIFE

作者： Nicole Doorly Kira Irving Gianna McArthur Keon Combie Virginia Engel Hassan Sakhtah Elise Stickles Hannah Rosenblum Andres Gutierrez Robert Root Chun Wai Liew John H. Long Mechanical and Aerospace Engineering Department Case Western Reserve University Cleveland OH USA Interdisciplinary Robotics Research Laboratory and the Cognitive Science Program Vassar College Poughkeepsie NY USA Neuroscience Institute Stanford University School of Medicine Stanford CA USA Neuroscience and Behavior Program Vassar College Poughkeepsie NY USA Memorial Sloan Kettering Cancer Care Center New York NY USA Department of Biology Vassar College Poughkeepsie NY USA Biochemistry Program Vassar College Poughkeepsie NY USA College of Medicine Howard University College of Medicine Washington D.C. USA School of Oceanography University of Washington Seattle WA USA Vassar College Poughkeepsie NY USA Department of Mathematics Lafayette College Easton PA USA Computer Science Department Lafayette College Easton PA USA Interdisciplinary Robotics Research Laboratory the Department of Biology and the Cognitive Science Program Vassar College Poughkeepsie NY USA

To test adaptation hypotheses about the evolution of animals, we need information about the behavior of phenotypically-variable individuals in a specific environment. To model behavior of ancient fish-like vertebrates, we previously combined evolutionary robotics and software simulations to create autonomous biomimetic swimmers in a simple aquatic environment competing and foraging for a single source of food. This system allowed us to test the hypothesis that selection for improved forage navigation drove the evolution of stiffer tails. In this paper, we extend our framework to evaluate more complex environments and hypotheses. Specifically, we test the hypothesis that predator-prey dynamics and the need for effective foraging strategies, operating simultaneously, were key selection pressures driving the evolution of morphological and sensory traits in early, fish-like vertebrates. Three evolvable traits were chosen because of their importance in propulsion and predator avoidance: (1) the number of vertebrae in the axial skeleton, (2) the trailing edge span of the caudal fin, and (3) the sensitivity of the sensory lateral line. To produce variable offspring, we used a genetic algorithm that rewarded parents with high fitness, allowing them to mate randomly and combine their mutated gametes. Offspring were then instantiated as autonomous embodied robots, the prey. These prey were chased by a non-evolving autonomous predator. Both kinds of robots were surface swimmers. The prey used a control architecture based on that of living fish: a two-layer subsumption architecture with predator escape over-riding steady swimming during foraging. The performance of six different prey robots in each generation was judged with a relative fitness function that rewarded a combination of high speed, rapid escape acceleration, escape responses, and the ability to stay away from the predator while at the same time staying close to the food source. This approach, which we call biomimet

关键词： Biomimetics Environmental factors Biological system modeling System testing Evolution (biology) Robot sensing systems Animals Navigation Tail Propulsion

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