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2nd International Conference on Innovative Computing, Information and control, ICICIC 2007

作者： Liu, Tung-Kuan Lin, Hou-Yuan Chen, Chiu-Hung Chou, Jyh-Horng Tsai, Jinn-Tsong Ho, Wen-Hsien Institute of System Information and Control Natl Kaohsiung First Univ. of Science and Technology Kaohsiung Taiwan Dept. of Computer Secience Natl Pingtung Univ. of Education Pingtung Taiwan Dept. of Medical Information Management Kaohsiung Medical University Kaohsiung Taiwan

ISBN: (纸本)0769528821

The design of an automobile fixture system should meet several interference-free requirements while locating fixture positions, e.g. (1) interference-free among various fixture modules, (2) interference-free among work pieces and fixture modules during clipping and moving and (3) interference-free among machining tools and fixture modules. Furthermore, a good design also needs to minimize the cost by selecting proper fixtures from the existed modular fixtures under clip-force limitations in the specification. To achieve multiple complex constraints and cost-minimum requirement, real-coded Genetic Algorithm (RGA) is proposed to resolve the optimum problem. Comparing to the traditional try-and-error method, the design based on this work is obviously cost-effective and time-saving by cutting down the total deign time and fixture assembling time due to the capability of finding more precise and complete solution. © 2007 IEEE.

关键词： Intelligent systems

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MCMC-based indoor localization with a smart phone and sparse WiFi access points

MCMC-based indoor localization with a smart phone and sparse...

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2012 IEEE International Conference on Pervasive Computing and Communications Workshops, PERCOM Workshops 2012

作者： Liu, Yan Wang, Qiang Liu, Junbin Wark, Tim Dept. of Control Science and Engineering Harbin Institute of Technology Harbin China Autonomous System Lab. CSIRO ICT Centre Brisbane QLD Australia Faculty of Built Environment and Engineering Queensland University of Technology Brisbane QLD Australia

ISBN: (纸本)9781467309073

We present a novel indoor localization approach using a pocket-placed smart phone and sparsely deployed WiFi access points (APs). Position information of a person carrying a smart phone can typically be obtained by two means: dead-reckoning(DR) based on local inertial sensors measurements and WiFi fingerprinting (FP). While a number of methods have been developed to fuse these two types of position information, due to extended training requirements in FP, their approaches suffer from limited practicality in most applications. To overcome some of the limitations of previous approaches, we propose to apply Markov Chain Monte Carlo (MCMC) sampling to fuse the local inertial measurements and the received signal strengths from nearby WiFi APs. MCMC technique can provide high accurate probability distribution inference. The performance of our proposed method is benchmarked using previous state-of-the-art through simulations as well as a real experiment in a typical office environment. © 2012 IEEE.

关键词： Indoor positioning systems

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An improved ZVS partial series resonant DC/DC converter with low conduction losses

An improved ZVS partial series resonant DC/DC converter with...

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作者： Lee, Dong-Yun Kim, Eui-Sung Hyun, Dong-Seok Choy, Ick Dept. of Electrical Engineering Hanyang University 17 Haengdang-dong Seongdong-ku Seoul133-791 Korea Republic of Intelligent System Control Research Center Korea Institute Science and Technology Korea Republic of

This paper presents an improved ZVS partial series resonant DC/DC converter (PSRC) with low conduction losses, suitable for high power and high frequency application. The proposed PSRC has advantages of zero-voltage-switching (ZVS) of the main switches for entire load ranges and low conduction losses of the main switches by decreasing current stresses. Also, reduction of the effective duty cycle does not occur during resonant period of the main circuit because the auxiliary circuit of the proposed converter is placed out of the main power path. The auxiliary network is only composed of passive components including the auxiliary inductor, auxiliary capacitors, auxiliary diodes and saturable inductor. Therefore, an improved ZVS PSRC has improved characteristics with respect to the overall system efficiency. The operation principles of the proposed converter are explained in detail and the validity of the proposed converter is verified by several interesting simulated and experimental results. © 2000 IEEE.

关键词： Zero voltage switching

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Skill-based vibration suppression in manipulation of deformable linear objects

Skill-based vibration suppression in manipulation of deforma...

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22nd Annual Symp. on Micro-Nano Mechatronics and Human science, MHS 2011, Held Jointly with the Symp. on COE for Education and Research of Micro-Nano Mechatronics, Micro-Nano GCOE 2011, Symp. on Hyper Bio Assembler for 3D Cellular system Innovation

作者： Ding, Feng Huang, Jian Matsuno, Takayuki Fukuda, Toshio Dept. Control Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China Department of Micro System Engineering Nagoya University Chikusa-ku Nagoya 464-8603 Japan Department of Intelligent System Design Engineering Toyama Prefectural University Imizu-City Toyama 939-0398 Japan

ISBN: (纸本)9781457713613

Researches on robotic manipulation mainly focus on rigid objects. Whereas, manipulating deformable linear objects (DLOs) such as hoses, wires, cables is common in daily life and many domains such as manufacture, medical surgery and so on. The DLOs are more challengeable to handle, as the uncertainty results from oscillation at the end of DLOs may cause failure in the operation. During manipulating DLOs, especially moving them rapidly, the dynamic characteristics can not be neglected. In this paper, based on the dynamic model of DLOs, we illustrate a skill-based manipulating strategy for eliminating the vibration at the end of DLOs. The method is position-based and inspired from human manipulation skills. From our life experience, when people manipulate DLOs by hand, the oscillation will be significantly reduced if we suddenly lift it up with a certain acceleration. Based on the idea and dynamic model of DLOs, the control strategy by using fuzzy and PI controller is illustrated. The effectiveness of the proposed strategy is confirmed by numerical simulation results. The simulation results show that the proposed method can damp the vibration effectively. © 2011 IEEE.

关键词： Dynamic models

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High Speed Indoor Navigation of Mobile Robots Using Hybrid Dynamic control Approach

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IFAC Proceedings Volumes 2001年第4期34卷 257-262页

作者： Mee-Seub Lim Sang-Rok Oh Joonhong Lim Dept. of Mechatronics Kyonggi Institute of Technology Intelligent System Control Research Center Korea Institute of Science and Technology Department of Electronic Engineering Hanyang University

In this paper, we propose a new approach to the high-speed navigation of the indoor environments for wheeled mobile robots using hybrid dynamic control approach. The proposed hybrid system consists of the discrete state system as the high-level process and the continuous state system as the low-level process. In discrete state system, the di crete states are defined by the user-defined constraints and the abstracted motions specify the reference motion commands of mobile robots. The experimental results show that hybrid system approach is an effective method for the autonomous navigation and highspeed maneuvering.

关键词： Mobile Robot High-Speed Indoor Navigation Hybrid Dynamic control

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Design of an Image Motion Compensation (IMC) algorithm for the Communication, Ocean, Meteorological Satellite (COMS)

Design of an Image Motion Compensation (IMC) algorithm for t...

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AIAA/AAS Astrodynamics Specialist Conference, 2006

作者： Jung, Taek-Seo Lee, Un-Seob Park, Sang-Young Choi, Yoon-Hyuk Bang, Hyo-Choong Ju, Gwanghyeok Yang, Koon-Ho Yonsei University Seoul 120-749 Korea Republic of Korea Advanced Institute of Science and Technology Daejeon 305-701 Korea Republic of Korea Aerospace Research Institute Daejeon 305-333 Korea Republic of Astrodynamics and Control Lab. Dept. of Astronomy and Space Science Flight Dynamics and Control Lab. Dept. of Aerospace Engineering Communication Satellite System Department

ISBN: (纸本)1563478226

This paper presents an Image Motion Compensation (IMC) algorithm for Korea's Communication, Ocean, and Meteorological Satellite (COMS). An IMC algorithm is a priority component of the Image Navigation and Registration (INR) system to locate and register radiometric image data. To eliminate image distortions, depointing of the imager aiming direction must be adjusted. A compensation algorithm to correct depointing caused by satellite motion is designed, and the capability of the algorithm is compared with that of existing algorithm applied to the GOES's INR system. The algorithm developed in this paper improves pointing accuracy by efficiently compensating for depointing of the imager aiming direction. Copyright © 2006 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.

关键词： Motion compensation

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Hybrid-data-driven fuzzy recognition of operator cognitive state in human-machine cooperative control system

Hybrid-data-driven fuzzy recognition of operator cognitive s...

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13th IFAC Symposium on Large Scale complex systems: Theory and Applications, LSS 2013

作者： Zhang, Jian-Hua Raisch, Jörg Dept. of Automation East China University of Science and Technology Shanghai 200237 China Control Systems Group Technische Universität Berlin D-10587 Berlin Germany Systems and Control Theory Group Max Planck Institute for Dynamics of Complex Technical Systems D-39106 Magdeburg Germany

In this paper, the Human Cognitive State (HCS) in the context of human and complex system interaction was classified by using the Fuzzy C-Means (FCM) algorithm. The most important features for the HCS pattern classification were extracted from a set of measured physiological variables based on the comparison of their respective rates of correct classification. The results have shown the usefulness of the FCM algorithm as well as the selected features for the challenging HCS classification problem. © IFAC.

关键词： Fuzzy set theory

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A real-time center of gravity trajectory generation of a biped humanoid under variable reference ZMP trajectory

A real-time center of gravity trajectory generation of a bip...

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2nd International Conference on Engineering and technology Innovation 2012, ICETI 2012

作者： Park, Ill-Woo Cho, Baek-Kyu Kim, Jung-Yup Dept. of Information and Control Eng. Kwangwoon University 447-1 Wolgye-dong Seoul Korea Republic of School of Mechanical System Eng. Kookmin University 861-1 JeongNeung-dong Seoul Korea Republic of Dept. of Mechanical System Design Eng. Seoul National University of Science and Technology 138 Gongrung-gil Seoul Korea Republic of

ISBN: (纸本)9783037856123

This paper describes a method for generating a center of gravity trajectory of a biped humanoid robot under variable reference ZMP trajectory. A simple inverted pendulum model (SIPM) is used to calculate a center of gravity (CoG) trajectory from a reference zero moment point (ZMP) trajectory with an analytic form, which is based on the Fourier series. Fundamentally, we used a time segmentation based approach. For each segment, we defined its duration and boundary conditions, which are the key parameters of ZMP trajectory design. After designing the ZMP trajectory in each segment, we can automatically calculate the CoG trajectory by matching the boundary conditions and by calculating the coefficients between the time segments. The reference ZMP trajectory can be changed by updating the boundary conditions during walking. We successfully verified the proposed method through full-body dynamic simulations with variable step length. © (2013) Trans Tech Publications, Switzerland.

关键词： Trajectories

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Long-term service experience with advanced austenitic alloys in Eddystone Power Station

Long-term service experience with advanced austenitic alloys...

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Pressure Vessels and Piping Conference of the American-Society-of-Mechanical-Engineers

作者： Okada, H. Igarashi, M. Yamamoto, S. Miyahara, O. Iseda, A. Komai, N. Masuyama, F. Corporate Research and Development Laboratories Sumitomo Metal Industries Ltd. Quality Control and Technical Service Dept. Steel Tube Works Sumitomo Metal Industries Ltd. Tubular Products Technology Department Sumitomo Metal Industries Ltd. Nagasaki Research and Development Center Mitsubishi Heavy Industries Ltd. Kyushu Institute of Technology Dept. Applied Science for Integrated System Engineering

ISBN: (纸本)9780791842874

A service exposure test of advanced austenitic alloys was performed at Eddystone Power Station Unit 1. The alloys tested were TP347HFG;SUPER304H and HR3C as well as 17-14CuMo as a reference material. They were installed in the final super-heater section in 1991 and were removed in 2004. The service exposure duration is 75,075 h with the steam temperature and pressure estimated 615 degrees C and 35 MPa, respectively. Post exposure examination has proved no marked hot-corrosion and steam oxidation have occurred for the TP347HFG SUPER304H and HR3C specimens, while severe hot-corrosion and exfoliation of steam-oxide films was pronounced in 17-14CuMo specimens. It is also found that HR3C exhibits the highest tensile strength with a lowest ductility and TP347HFG does vice versa, while the strength of SUPER304H is equivalent to that of 17-14CuMo with much better ductility. Short-term creep rupture strengths of these alloys have been reduced to some extent after the long-term service exposure and a longer-term creep rupture testing has been in progress. Microstructural evolution of the TP347HFG, SUPER304H and HR3C as well as 17-14CuMo during the long-term service exposure have been analyzed using a detailed TEM examination and the chemical analysis of extraction residue of the exposed specimens.

关键词： Austenitic stainless steel

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Applying Predictive Machine Learning Algorithms to Petroleum Refining Processes as Part of Intelligent Automation 23

Applying Predictive Machine Learning Algorithms to Petroleum...

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23rd IEEE International Conference of Young Professionals in Electron Devices and Materials, EDM 2022

作者： Nekrasov, Ivan S. Tynchenko, Vadim S. Bukhtoyarov, Vladimir B. Kachaeva, Vera A. Bashmur, Kirill A. Sinitskaya, Aleksandra E. Siberian Federal Univercity Laboratory of Biofuel Composition Krasnoyarsk Russia Siberian Federal Univercity Dept. of Technological Machines and Equipment of Oil and Gas Complex Krasnoyarsk Russia Institute of Computer Science and Telecommunications Reshetnev Siberian State University of Science and Technology Information-Control Systems Department Krasnoyarsk Russia

ISBN: (纸本)9781665498043

Intelligent automation is a term that can be applied to the more complex field of workflow automation, consisting of robotic workplace automation, robotic process automation, machine learning, and artificial intelligence. Depending on the type of business, companies often use one or more types of automation to improve efficiency or effectiveness. As you move from process-driven automation to more flexible data-driven automation, additional costs arise in the form of training datasets, technical development, infrastructure, and expertise. But the potential benefits in terms of new ideas and financial development can increase significantly. The development of mechanized oil production in recent years has been accompanied by significant achievements in the field of digitalization. Machine learning, as an important element of digitalization, can successfully solve many production problems. The paper describes the application of some machine learning algorithms for solving the problem of classifying and predicting failures of hydrocracking process equipment that occur during oil refining and diesel fuel production. The application of random forest, principal component analysis and hyperparameter tuning methods is considered. The effectiveness of their application is compared. © 2022 IEEE.

关键词： Decision trees

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