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2014 International Conference on Informative and Cybernetics for Computational Social systems(ICCSS2014)

作者： Zhen Gao Feng Hua Zhu Hong Mo College of Electrical and Information Engineering Changsha University of Science and Technology State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences

According to the actual circumstance of the intersection,reasonably adjusting traffic light time can help to ease traffic pressure and save transportation *** this paper,Interval type-2 fuzzy sets and matched-degree are applied to the time of intersection signal adjusting,and five words are used to cover the range of adjusting lights’time,finally according to the average number of stranded vehicles,a query table is built to inquire and control the signal time during a certain period.

关键词： Interval type-2 fuzzy sets footprint of uncertainty computing with words traffic light time

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Interventions of traffic flow for Intersection Based on Interval type-2 fuzzy sets

Interventions of traffic flow for Intersection Based on Inte...

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2014 International Conference on Informative and Cybernetics for Computational Social systems(ICCSS2014)

作者： Xuan Li Hong Mo Feng Hua Zhu College Of Electrical And Information Engineering Changsha University Of Science And Technology State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences

Assessment and analysis of the intersection status can help to make the right choice of interventions,it’s can bring convenience to solve the traffic *** this paper,interval type-2 fuzzy sets is applied in the analysis of the intersection state and congestion intervention,dynamic fuzzy comprehensive evaluation and footprint of uncertainty are used to assess the intersection *** with the example of intersection congestion,through corresponding intervention measures to improve the intersections crowded *** the linguistic dynamic orbits of road status figured out.

关键词： interval type-2 fuzzy sets footprint of uncertainty intervention measures linguistic dynamic orbits

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Mars entry trajectory tracking via constrained multi-model predictive control

Mars entry trajectory tracking via constrained multi-model p...

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Chinese control Conference (CCC)

作者： Chao Wu Shihua Li Jun Yang Lei Guo Key Laboratory of Measurement and Control of Complex Systems of Engineering Ministry of Education School of Automation Southeast University Nanjing Jiangsu CN School of Automation Science and Electrical Engineering Beihang University & Institute of Instrument Science and Opto-Electronics Engineering Beijing CN

Tracking law designed for future Mars entry missions is investigated in this article. For precision landing, the nonlinear entry dynamics, complex uncertainties and input saturation constraints are unavoidable problems. Facing these challenges, the Mars entry trajectory tracking scheme via constrained multi-model predictive control (CMPC) is employed. The CMPC is made up of some constrained predictive control (CPC) in different time domain during the Mars entry mission. Each constrained predictive controller consists of a linearized prediction model (obtained by linearizing at different operating point), feedback correction for active model mismatch rejection caused by the complex uncertainties, and constrained rolling optimization for a smooth control input under a saturation constraint. Monte Carlo simulations demonstrate the effectiveness and excellence of the proposed method under the saturation constraint of input and uncertainties of initial state and aerodynamic parameters such as atmospheric density, ballistic coefficient and lift-to-drag ratio.

关键词： Mars Aerodynamics Uncertainty Trajectory Predictive models Vehicles Predictive control

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Multiple UAVs Mission Assignment Based on Modified Pigeon-Inspired Optimization Algorithm

Multiple UAVs Mission Assignment Based on Modified Pigeon-In...

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2014中国制导、导航与控制学术会议

作者： Ran Hao Delin Luo Haibin Duan School of Reliability and Systems Engineering Beihang UniversityBeijing100191 China Department of AutomationXiamen UniversityXiamenChina Science and Technology on Aircraft Control LaboratorySchool of Automation Science and Electrical EngineeringBeihang UniversityBeijingChina

ISBN: (纸本)9781479946983

Unmanned aerial vehicles (UAVs) have shown their superiority for applications in performing military and civilian *** which,multiple UAVs mission assignment is becoming more important for today's military *** far,there have been many bio-inspired computation algorithms for solving multiple UAVs mission assignment problems,including particle swarm optimization (PSO),differential evolution algorithm (DE) and so ***,deficiencies of these approaches exist inevitably,which cannot satisfy the requirements of dynamic mission *** this paper,a new UAV assignment model focusing on the energy consumption of UAV is brought up which can be easily applied to intelligence ***,we propose a new approach by applying the modified Pigeon-Inspired Optimization (PIO) algorithm to sovle the multiple UAVs mission assignment *** simulation results show that the modified PIO algorithm is more effective when compared with other state-of-the-art algorithms in addressing mission assignment problem for multiple UAVs.

关键词： autonomous aerial vehicles evolutionary computation particle swarm optimisation DE PSO differential evolution algorithm dynamic mission assignment intelligence algorithms modified PIO algorithm modified Pigeon-inspired optimization algorithm multiple UAV mission assignment model particle swarm optimization unmanned aerial vehicles Compass Convergence Energy consumption Equations Heuristic algorithms Modeling Optimization

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Longitudinal control of vehicle platoons for stop-and-go waves mitigation

Longitudinal control of vehicle platoons for stop-and-go wav...

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International Conference on System Theory, control, and Computing (ICSTCC)

作者： Constantin F. Caruntu Cosmin Copot Corneliu Lazar Robin De Keyser Faculty of Automatic Control and Computer Engineering Gheorghe Asachi Technical University of Iasi Iasi Romania Department of Electrical energy Systems and Automation Ghent University Ghent Belgium

The increased traffic flow on both existing highways and city roads leads to the appearance of stop-and-go waves which have many disadvantages, e.g., increased risk of accidents, higher fuel consumption, increased pollution, increased wear of vehicle mechanical parts, driving stress and passenger discomfort. The platooning of vehicles could be the solution to this problem by enforcing them to follow each other and to maintain a safe distance between them. The advantages brought by this solution depend on ensuring the string stability of the vehicle platoon. In this paper the leader-follower system is employed to illustrate the stop-and-go waves mitigation. Several controllers (P, PI) were designed based on the conditions that have to be met in order to ensure the string stability of the vehicle platoon and comparisons were made with a controller based on the driver behavior.

关键词： Vehicles Mobile robots Accidents Stability criteria Transfer functions

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Study onIndex of Stochastic Linear Continuous-Time systems

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Mathematical Problems in engineering 2015年第1期2015卷

作者： Yan Li Tianliang Zhang Xikui Liu Xiushan Jiang College of Electrical Engineering and Automation Shandong University of Science and Technology Qingdao Shandong 266590 *** College of Information and Control Engineering China University of Petroleum (East China) Qingdao Shandong 266590 *** College of Mathematics and Systems Science Shandong University of Science and Technology Qingdao Shandong 266590 ***

This paper studies the index problem. We obtain a necessary and sufficient condition of index larger than γ > 0. A generalized differential equation is introduced and it is proved that its solvability and the feasibility of the index are equivalent. We extend the deterministic cases to the stochastic models. Our results can be used to fault detection filter analysis. Finally, the effectiveness of the proposed results is illustrated by an example.

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Networked systems with incomplete information

Abstract and Applied Analysis

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Abstract and Applied Analysis 2015年第1期2015卷

作者： Wang, Zidong Shen, Bo Dong, Hongli He, Xiao Hu, Jun Department of Computer Science Brunel University London Uxbridge Middlesex UB8 3PH United Kingdom School of Information Science and Technology Donghua University Shanghai 200051 China College of Electrical and Information Engineering Northeast Petroleum University Daqing 163318 China Research Institute of Intelligent Control and Systems Harbin Institute of Technology Harbin 150001 China Department of Automation Tsinghua University Beijing 100084 China Department of Applied Mathematics Harbin University of Science and Technology Harbin 150080 China

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The identifier-based relative position estimation for leader-follower robotic system

The identifier-based relative position estimation for leader...

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IEEE International Conference on Mechatronics and automation

作者： Lingyi Xu Zhiqiang Cao Peng Zhao Yixin Yin State Key Laboratory of Management and Control for Complex Systems Chinese Academy of Sciences Beijing China School of Automation and Electrical Engineering University of Science and Technology Beijing Beijing China

ISBN: (纸本)9781479939800

A monocular vision measurement approach is presented for leader-follower robotic system to estimate the position of the leader robot relative to the follower robot. The color identifier with green and red blocks is attached on the back of the leader robot, and it may be captured by the camera mounted on the follower robot. A coarse-to-fine searching method is given to extract the center point of the identifier. The parameters of the camera with the combination of the intrinsic and extrinsic ones are calibrated via least square method with given relative positions and the corresponding image coordinates of the identifier's center. The parameters are further optimized with Levenberg-Marquardt method. Then the position of the leader robot relative to the follower robot can be estimated only with single feature point. The experimental results verify the validity of the given approach.

关键词： Robot kinematics Cameras Feature extraction Robot vision systems Position measurement Image color analysis

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Virtual instruments for humidity and temperature measurements

Virtual instruments for humidity and temperature measurement...

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International Conference on Information Technology Based Higher Education and Training, ITHET

作者： Nedyu Nedev Zvezditza Nenova Stefan Ivanov Dept. of Fundamentals of Electrical and Power Engineering Technical University of Gabrovo Gabrovo Bulgaria Dept. of Automation Information and Control Systems Technical University of Gabrovo Gabrovo Bulgaria

Virtual instrumentation is used increasingly along with traditional measurement devices. They allow measurement and control of various parameters, simulated testing of models of real processes and provide convenient user interface by giving an opportunity to build an Internet-based virtual laboratories. This paper presents the results of the development of a computer-based system for data acquisition and LabVIEW virtual instruments for measuring humidity and temperature, enabling the creation of Internet-based virtual laboratories. This virtual instrumentation makes possible both remote measurement of humidity and temperature and training outside educational laboratories. The proposed approach allows remote conducting of real experiments and makes it possible to use virtual instruments in the field of training engineering students where it is essential to have practice hours.

关键词： Instruments Humidity measurement Temperature measurement Universal Serial Bus Switches Laboratories Temperature sensors

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A model-free adaptive switching control approach for a class of nonlinear systems

A model-free adaptive switching control approach for a class...

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World Congress on Intelligent control and automation (WCICA)

作者： Shang-tai Jin Zhong-sheng Hou Rong-hu Chi Advanced Control Systems Laboratory of the School of Electronic and Information Engineering Beijing Jiaotong University Beijing Beijing CN School of Automation and Electrical Engineering Qingdao University of Science and Technology Qingdao Shandong CN

In this paper, a model-free adaptive switching control (MFASC) approach is proposed for a class of discrete-time nonlinear systems with unknown control direction. The control scheme consists of a control algorithm, a parameter estimation algorithm and a switching mechanism. Its distinct feature is that the controller design depends merely on the measured input and output data of the controlled plant without requiring any other modeling information of the plant, and it is able to deal with the system with unknown control direction by introducing a hysteresis switching mechanism. Numerical simulations show the effectiveness of the proposed approach.

关键词： Switches Adaptation models Nonlinear systems Hysteresis Adaptive control Data models

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