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2016 IEEE 13th International Conference on Signal Processing（ICSP2016）

作者： Yinyin Tang Yueke Wang Jianyun Chen Hong Chen College of Mechatronics Engineering and Automation National University of Defense Technology Xi’an Satellite Control Center

The uplink of navigation constellation is a complex satellite range scheduling problem. The traditional heuristic method is difficult to tackle large scale optimal problem. We proposed a genetic algorithm(GA) to deal with the problem. The method is a multi-objective algorithm considering the maximum task and minimum switch times based on multi-hierarchical encoding method. Several sets of simulation are performed to test the performance of the proposed algorithm. Numerical results show that the proposed method can achieve the minimum switch times with a negligible loss in task number(approximately 7.65%). The genetic algorithm is suitable for different scale of uplink problems and its performance is related to population size and elite size.

关键词： Navigation constellation Uplink scheduling Genetic algorithm Maximum task Minimum switch times

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Dynamics and Optimal Design of a 3-DoF Parallel Manipulator for Pick-and-Place Applications

Dynamics and Optimal Design of a 3-DoF Parallel Manipulator ...

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第17届中国系统仿真技术及其应用学术年会（17th CCSSTAE 2016）

作者： Lou Yun-jiang Liao Bin Key Lab for Advanced Motion Control Technology and Modern Automation Equipments School of Mechatronics Engineering and AutomationHarbin Institute of Technology(Shenzhen)

Robot acceleration is the bottleneck for high-speed pick-and-place *** this paper,the extreme acceleration at null velocity is proposed to characterize the acceleration *** dynamic model of the V3 robot is developed for computing the extreme *** each subchain of the robot is comparable to a cantilever beam structure,its bending deflection may be considerable and thus leads to manipulation *** bending stiffness is thus proposed characterized by the bending *** the acceleration and the bending stiffness with kinematic indices of velocity,accuracy,and dexterity,the optimal design problem is formulated to maximize the dextrous workspace having specified good *** optimal structure shows greatly improved performance in workspace,velocity,acceleration,and accuracy.

关键词： Dynamics Bending Deflection Pick-and-Place Optimal Design Parallel Manipulator

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Enhancing BEM simulations of a stalled wind turbine using a 3D correction model

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Journal of Physics: Conference Series 2018年第1期974卷

作者： Galih Bangga Go Hutomo Taurista Syawitri Tri Kusumadewi Winda Oktavia Ahmad Sabila Herlambang Setiadi Muhamad Faisal Yongki Hendranata Dwi Lastomo Louis Putra Stefanus Kristiadi Ilmi Bumi Institute of Aerodynamics and Gas Dynamics University of Stuttgart Stuttgart Germany Mechanical Engineering Department Institut Teknologi Sepuluh Nopember Surabaya Indonesia Toyota SO Department Astra International Ltd. Indonesia Mechanical Engineering Department Universitas Muhammadiyah Surakarta Surakarta Indonesia School of Manufacturing System and Mechanical Engineering Sirindhorn International Institute of Technology Thammasat University Thailand Project Support and Cost Control Division Indoturbine Ltd. Jakarta Indonesia Civil Engineering Department Universitas Brawijaya Malang Indonesia School of Information Technology & Electrical Engineering The University of Queensland Brisbane Australia Non-Installation Top Range Department Berca Schindler Lifts Ltd. Indonesia Graduate Institute of Automation and Control National Taiwan University of Science and Technology Taiwan Mechanical Engineering Department Texas A&M University College Station United States PUI-PT Mechatronics and Industrial Automation Research Center Intitut Teknologi Sepuluh Nopember Surabaya Indonesia Mechanical Engineering Department Politecnico di Milano Milan Italy Aeronautics Department Imperial College of Science Technology and Medicine London United Kingdom Materials Engineering Department Institut Teknologi Sepuluh Nopember Surabaya Indonesia

Nowadays wind turbine rotors are usually employed with pitch control mechanisms to avoid deep stall conditions. Despite that, wind turbines often operate under pitch fault situation causing massive flow separation to occur. Pure Blade Element Momentum (BEM) approaches are not designed for this situation and inaccurate load predictions are already expected. In the present studies, BEM predictions are improved through the inclusion of a stall delay model for a wind turbine rotor operating under pitch fault situation of -2.3° towards stall. The accuracy of the stall delay model is assessed by comparing the results with available Computational Fluid Dynamics (CFD) simulations data.

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Improving a two-equation eddy-viscosity turbulence model to predict the aerodynamic performance of thick wind turbine airfoils

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Journal of Physics: Conference Series 2018年第1期974卷

作者： Galih Bangga Tri Kusumadewi Go Hutomo Ahmad Sabila Taurista Syawitri Herlambang Setiadi Muhamad Faisal Raditya Wiranegara Yongki Hendranata Dwi Lastomo Louis Putra Stefanus Kristiadi Institute of Aerodynamics and Gas Dynamics University of Stuttgart Stuttgart Germany Mechanical Engineering Department Institut Teknologi Sepuluh Nopember Surabaya Indonesia School of Manufacturing System and Mechanical Engineering Sirindhorn International Institute of Technology Thammasat University Thailand Toyota SO Department Astra International Ltd. Indonesia Civil Engineering Department Universitas Brawijaya Malang Indonesia Mechanical Engineering Department Universitas Muhammadiyah Surakarta Surakarta Indonesia School of Information Technology & Electrical Engineering The University of Queensland Brisbane Australia Non-Installation Top Range Department Berca Schindler Lifts Ltd. Indonesia Graduate Institute of Automation and Control National Taiwan University of Science and Technology Taiwan School of Aerospace Transport and Manufacturing Cranfield University United Kingdom Mechanical Engineering Department Texas A&M University College Station United States PUI-PT Mechatronics and Industrial Automation Research Center Intitut Teknologi Sepuluh Nopember Surabaya Indonesia Mechanical Engineering Department Politecnico di Milano Milan Italy Aeronautics Department Imperial College of Science Technology and Medicine London United Kingdom

Numerical simulations for relatively thick airfoils are carried out in the present studies. An attempt to improve the accuracy of the numerical predictions is done by adjusting the turbulent viscosity of the eddy-viscosity Menter Shear-Stress-Transport (SST) model. The modification involves the addition of a damping factor on the wall-bounded flows incorporating the ratio of the turbulent kinetic energy to its specific dissipation rate for separation detection. The results are compared with available experimental data and CFD simulations using the original Menter SST model. The present model improves the lift polar prediction even though the stall angle is still overestimated. The improvement is caused by the better prediction of separated flow under a strong adverse pressure gradient. The results show that the Reynolds stresses are damped near the wall causing variation of the logarithmic velocity profiles.

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Performance of Virtual Stimulus Motion based on the SSVEP-BCI

Performance of Virtual Stimulus Motion based on the SSVEP-BC...

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International Symposium on Computer, Consumer and control

作者： Nannan Zhang Yang Yu Erwei Yin Zongtan Zhou Department of Automatic Control College of Mechatronics and Automation National University of Defense Technology National Key Laboratory of Human Factors Engineering China Astronaut Research and Training Center

ISBN: (纸本)9781509030729

In this paper, a brain-computer interface (BCI) paradigm based on steady-state visually evoked potentials (SSVEP) is used to determine the motion effects of stimulus targets on the classification accuracy and signal-to-noise ratio (SNR) in a virtual environment. Several paths including fixed and up/down with different speeds were set to look for performance differences. Experimental results show that the accuracy with moving targets is sometimes better than that for conventional non-moving targets, and even the relative SNR is improved with motion on occasions. This provides a basis for intensive study of the influence of moving objects on BCIs and target detection in real environments.

关键词： BCI SSVEP Stimulus motion

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Indoor 3D scene reconstruction for mobile robots using Microsoft kinect sensor

Indoor 3D scene reconstruction for mobile robots using Micro...

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Chinese control Conference (CCC)

作者： Jiang-Wei Li Ding-Fu Zheng Zhi-Hong Guan Chao-Yang Chen Xiao-Wei Jiang Xian-He Zhang College of Automation Huazhong University of Science and Technology Wuhan Hubei CN School of Information and Electrical Engineering Hunan University of Science and Technology Xiangtan Hunan CN College of Mechatronics and Control Engineering Hubei Normal University Huangshi CN

ISBN: (纸本)9781509009107

3D mapping for unknown environments is a crucial issue for mobile service robots, which has many important applications in navigation and path planning. In this paper, we use Microsoft kinect sensor mounted on a mobile robot to obtain 3D map. During the process, consistent frames of RGB-D data are captured and integrated. Iterative Closest Point (ICP) algorithm and incremental registration method are employed to perform the fine registration. Furthermore, we use OctoMap to store 3D map of octree representation, an efficient data structure. Finally, our results demonstrate the practical applicability and effectiveness of the proposed approach.

关键词： Three-dimensional displays Robot sensing systems Cameras Two dimensional displays Iterative closest point algorithm Mobile robots

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Realize Almost Sure Optimal Consensus with Quantized Gossip-Type Subgradient Algorithms 34

Realize Almost Sure Optimal Consensus with Quantized Gossip-...

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第三十四届中国控制会议

作者： HU Bin JIANG Xiao-Wei ZHANG Ding-Xue LI Tao GUAN Zhi-Hong College of Automation Huazhong University of Science and Technology College of Mechatronics and Control Engineering Hubei Normal University Petroleum Engineering College Yangtze University School of Electronics and Information Yangtze University

ISBN: (纸本)9781467374439

This paper concerns with the optimal consensus problem of multi-agent networks under imperfect *** the network issues, we resort to an integrated scheme of the standard gossip algorithm and the subgradient method for multiagent cooperative control. Under the proposed control strategy, agents are supposed to transfer desirable information through a quantized mechanism, and the dithering technique is adopted to deal with the triggered quantization errors. Detailed convergence analysis is carried out by the stochastic approximation method. It is demonstrated that multi-agent networks can achieve almost sure optimal consensus under the proposed algorithm through quantized communication. Related simulation work is further given to validate the derived theoretical results.

关键词： Multi-agent networks,Optimal consensus,Gossip algorithm,Subgradient method,Quantization

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Synchronization of fractional-order drive-response complex dynamical networks using scalar signals 34

Synchronization of fractional-order drive-response complex d...

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第三十四届中国控制会议

作者： ZHAO Xiao-Wen WU Yonghong ZHANG Xian-He LIU Feng GUAN Zhi-Hong College of Automation Huazhong University of Science and Technology School of Science Wuhan University of Technology College of Mechatronics and Control Engineering Hubei Normal University School of Automation China University of Geosciences

ISBN: (纸本)9781467374439

In this paper, synchronization of drive-response complex dynamical networks with fractional-order dynamical nodes is discussed. Only scalar signals as the feedback variable are required to be transmitted from the driving network to the response network, which can save a lot of channel resources and has more significant meanings in engineering applications. Based on the Jordan canonical transformation method, some criteria for synchronization of fractional-order drive-response complex dynamical networks are given in the form of normal algebraic inequalities, which can greatly decrease the original computational ***, a numerical simulation is provided to validate the effectiveness and feasibility of the proposed synchronization criteria.

关键词： Complex dynamical networks,Fractional-order,Synchronization,Scalar signal

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Numerical simulation and experimental study on the anti-overload ability of cylindrical roller bearing in a short time

Numerical simulation and experimental study on the anti-over...

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International Conference on mechatronics engineering and Electrical engineering, CMEEE 2014

作者： Ni, Y.G. Li, Y. Deng, S.E. Li, X.F. School of Mechatronics Engineering Henan University of Science and Technology Luoyang China Beijing Institute of Automation Control Equipment Beijing China

ISBN: (纸本)9781138027190

An elastic-plastic finite element model of cylindrical roller bearing under overload condition is established, analyzing the influences of different overload coefficiency on stress and strain distribution of cylindrical roller bearing;the study shows: under the overload condition (with the occurrence of "fringe effect" at the end part of roller) stress concentration increases remarkably with the increase of load applied;the maximum plastic deformation of the contact area between bearing roller, inner ring, and outer ring—all present a nonlinear increased trend along with the increase of radial load. The measurement of permanent deformation of the bearing after static pressure test verifies the validity of the result of the finite element analysis. © 2015 Taylor & Francis Group.

关键词： Finite element method

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Disturbance attenuation of asymmetric structure by LMI based optimal state feedback controller with saturated actuators 6

Disturbance attenuation of asymmetric structure by LMI based...

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6th International Conference on Modeling, Simulation, and Applied Optimization, ICMSAO 2015

作者： Sever, Mert Yazici, Hakan Goktas, Gulay Beklan Kucukdemiral, Ibrahim Department of Mechatronics Engineering Yildiz Technical University Istanbul Turkey Department of Mechanical Engineering Yildiz Technical University Istanbul Turkey Department of Control and Automation Engineering Yildiz Technical University Istanbul Turkey

ISBN: (纸本)9781467366014

This paper is concerned with the design of linear matrix inequalities (LMIs) based optimal state-feedback controller design for seismically excited asymmetric structures (AS) having stiffness irregularities. The system is modelled in terms of mass, natural frequencies, damping ratio and eccentricities to easily obtain torsionally flexible (TF) model. A one storey, two-way asymmetric structural system is used to illustrate the effectiveness of the approach through simulations. The modelled system has bi-lateral and rotational degrees of freedom. Frequency responses show the effectiveness of proposed controller by means of a decrease in the peak values of translation at each resonance frequency. Moreover, the time domain simulation results, acquired by using real time-history data of San Francisco and El Centro Earthquakes also show that proposed controller is very effective in reducing vibration amplitudes of each direction by applicable control signals and guaranteeing the stability of the closed loop system. © 2015 IEEE.

关键词： Earthquakes

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