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Cascaded PI Controller Tuning for Power Plant Superheated Steam Temperature based on Multi-Objective Optimization

IFAC-PapersOnLine 2017年第1期50卷 3227-3231页

作者： Fu H. Pan L. Xue Y.L. Sun L. Li D.H. Lee K.Y. Wu Z.L. He T. Zheng S. Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education Southeast University Nanjing 210096 China State Key Lab of Power System Department of Thermal Engineering Tsinghua University Beijing China Department of Electrical and Computer Engineering Baylor University Waco TX 76798 United States Department of Automation Fuzhou University Fuzhou 350000 China

To improve the superheated steam temperature (SST) control performance, this paper considers the conflicting objectives in SST control, multi-objective optimization (MOO) algorithm is employed in this paper. Firstly, the inner-loop PI controller is optimized by considering the objectives of set-point tracking and disturbance rejection, with and without constraints on robustness level. It is found that robustness constraint is essential in the optimization. Secondly, the regulation performance of the outer-loop PI controller is addressed by optimizing the disturbance rejection and robustness simultaneously. The parameter are determined based on the simulation comparison between the non-dominated solutions. The simulation results demonstrate a promising prospect of promoting the proposed strategy to more industrial practices. © 2017

关键词： Disturbance rejection Pareto optimization Power plant control Robustness Superheated steam temperature

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An Open Source Map Optimization Platform for Efficient Navigation

An Open Source Map Optimization Platform for Efficient Navig...

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IEEE International Conference on Computational Science and engineering, CSE

作者： Liangming Cai Chunqiang Chen Xiaoling Wang Shurui Lin Kai Cheng Jiefeng Huang Jinping Jiang Minchen Zhu Min Du Rituparna Datta Yurong Li Jingshan Huang Zhicheng College College of Physics and Information Engineering Fuzhou University Fuzhou China University of South Alabama HaiXi Institutes Chinese Academy of Science Fuzhou China Zhicheng College Zhicheng College Fuzhou University Fuzhou China College of Allied Health Professions University of South Alabama Mobile USA Department of Respiratory Medicine Fujian Medical University Fuzhou China College of Electrical Engineering & Automation Fuzhou University Fuzhou China College of Mathematics and Computer Science Fuzhou University Fuzhou China Provincial Key Laboratory of Eco-industrial Green Technology Wuyi College Wuyishan China Fuzhou University School of Computing University of South Alabama Mobile USA Fuzhou University Fuzhou China

Aiming at the problem that the map operation time occupies more resources in the embedded system. By studying the digital map, then the corresponding map is drawn and the map is optimized. Using the GPS/BEIDOU module to locate and use the Dijkstra algorithm to achieve the shortest path of the navigation module design, the use of the map database to remove the corresponding area of the data mapping map information, in a translation to a certain distance when the scene clear the data, draw a map. In this way, there will be no data left in the view. Since the Dijkstra algorithm is based on the graph, it is necessary to link the roads in the area to create an indirect graph to find the shortest path to the end point. If the point of the line as an indirect node, the composition of the indirect map will be very large. Moreover, the use of the line as an indirect node, we can reduce the number of nodes without the map, to improve the efficiency of Dijkstra algorithm traversal. Based on the open system platform and data standard, this paper designs and develops a secure, stable and low cost embedded GPS/BEIDOU navigation and navigation system. The experimental results are optimized. The results show that the proposed method is efficient for navigation.

关键词： Conferences Scientific computing Ubiquitous computing

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Unknown input observer based on discrete-time nonlinear descriptor model for understanding sitting control

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IFAC-PapersOnLine 2017年第1期50卷 820-825页

作者： Blandeau M. Guerra T.M. Estrada-Manzo V. Pudlo P. Gabrielli F. Laboratory of Industrial and Human Automation control Mechanical engineering and Computer Science (LAMIH UMR CNRS 8201) Université de Valenciennes et du Hainaut-Cambrésis Valenciennes France Department of Electrical and Electronics Engineering Sonora Institute of Technology 5 de febrero 818 Sur CP Obregon Sonora 85000 Mexico

The present paper studies sitting control for persons with complete thoracic spinal cord injury by means of automatic control. The methodology begins by modeling sitting control, after a discretization of the nonlinear descriptor model is computed, then a Takagi-Sugeno model is obtained for further manipulations. The approach uses unknown input observers to estimate states and internal variable of the system. The design conditions are expressed as linear matrix inequalities, whose solvability depends on convex optimization techniques. Simulations are conducted to show the effectiveness of the proposed observer. © 2017

关键词： Discrete-Time systems Inverted pendulum Nonlinear descriptor systems Sitting movement Spinal Cord Injury Takagi-Sugeno models Unknown input observer

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A new meniscus injury diagnostic model using fuzzy cognitive maps 24

A new meniscus injury diagnostic model using fuzzy cognitive...

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24th Mediterranean Conference on Control and automation, MED 2016

作者： Antigoni, Anninou P. Panagiotis, Poulios Peter, Groumpos P. Ioannis, Gliatis Laboratory of Automation and Robotics Department of Electrical and Computer Engineering University of Patras Greece Orthopedic Clinic Department of Medicine University of Patras Greece

ISBN: (纸本)9781467383455

The aim of this paper is to create an integrated meniscus injury diagnostic model, which by exploiting information about patient history and clinical examination made by physicians concludes to a final diagnosis using Fuzzy Cognitive Maps. Mechanisms of injury and symptoms combined with test results constitute the first level modelled with FCM. The output of this level decides if the patient has a meniscus tear or not. The second level decides if the injury is acute or degenerative with the help of risk factors using Competitive Fuzzy Cognitive Maps in order to conclude to only one decision. The results obtained by the model are very promising without requiring sending the patient for MRI (Magnetic Resonance Imaging) which is of utmost importance in diagnosing soft tissue injuries. © 2016 IEEE.

关键词： Fuzzy Cognitive Maps

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Mobile Robot Localisation and Navigation Using LEGO NXT and Ultrasonic Sensor

Mobile Robot Localisation and Navigation Using LEGO NXT and ...

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IEEE International Conference on robotics and Biomimetics

作者： Yanan Liu Rui Fan Bin Yu M. Junaid Bocus Ming Liu Hepeng Ni Jiahe Fan Shixin Mao Bristol Robotics Laboratory University of Bristol Bristol United Kingdom Hong Kong University of Science and Technology Kowloon HK Department of Electronic and Computer Engineering The Hong Kong University of Science and Technology Hong Kong University of Bristol Bristol Bristol GB Department of Electrical and Electronic Engineering University of Bristol Bristol United Kingdom School of Mechanical Engineering Shandong University Jinan China School of Communication Engineering Jilin University Changchun China Shenzhen Sanhang Industrial Technology Research Institute Shenzhen China

ISBN: (纸本)9781728103785;9781728103778

Mobile robots are becoming increasingly important both for individuals and industries. Mobile robotic technology is not only utilised by experts in this field but is also very popular among amateurs. However, implementing a mobile robot to perform tasks autonomously can be expensive because of the need for various types of sensors and the high price of robot platforms. Hence, in this paper we present a mobile robot localisation and navigation system which uses a LEGO ultrasonic sensor in an indoor map based on the LEGO MINDSTORM NXT. This provides an affordable and ready-to-use option for most robot fans. In this paper, an effective method is proposed to extract useful information from the distorted readings collected by the ultrasonic sensor. Then, the particle filter is used to localise the robot. After robot's position is estimated, a sampling-based path planning method is proposed for the robot navigation. This method reduces the robot accumulative motion error by minimising robot turning times and covering distances. The robot localisation and navigation algorithms are implemented in MATLAB. Simulation results show an average accuracy between 1 and 3 cm for three different indoor map locations. Furthermore, experiments performed in a real setup show the effectiveness of the proposed methods.

关键词： Mobile robot LEGO NXT Localisation and navigation Particle filter Path plan

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Testing automation systems by means of model checking

Testing automation systems by means of model checking

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International Conference on Emerging Technologies and Factory automation (ETFA)

作者： Igor Buzhinsky Valeriy Vyatkin Computer Technologies Laboratory ITMO University St. Petersburg Russia Department of Electrical Engineering and Automation Aalto University Finland Department of Computer Science Electrical and Space Engineering Luleå University of Technology Sweden

Industrial automation systems are commonly obliged to comply with correctness requirements and safety standards. Testing and simulation are traditionally used to ensure this compliance. For mission-critical applications, formal verification and model checking in particular are also used, but such techniques are computationally intensive and difficult to apply in practice. This paper searches for synergies between testing and model checking by generalizing an earlier proposed formal test modeling framework. It presents a technique of testing automation systems with the use of model checking, which now supports multiple model checking environments and a more generic test case representation. The proposed technique is applied on a case study involving a simple safety-critical system with timing requirements. Experiments show that the technique is fast despite the use of formal methods and at the same time has several benefits compared to usual testing.

关键词： Model checking automation Computational modeling IEC Standards Closed loop systems

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Evolutionary Dynamics and Individual Heterogeneity in Multi-agent networking systems 35

Evolutionary Dynamics and Individual Heterogeneity in Multi-...

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第35届中国控制会议

作者： ZHANG Jianlei CHEN Zengqiang LIU Zhongxin ZHANG Chunyan Department of Automation College of Computer and Control EngineeringNankai University Tianjin Key Laboratory of Intelligent Robotics Computer and Control EngineeringNankai University

ISBN: (纸本)9781509009107

Cooperative behaviors lie at the basis of human societies,yet its evolutionary origin still remains a perplexing *** exists a large evolutionary game literature exploring effects of population structures on evolutionary outcomes,but in most cases structured population models only employ one game alone.A relevant question is covered in this study thus concerns the effect of game diversity occurring along the edges linking two players situated on the *** basic structure of our mechanism provides more than one type of games available for the *** our game setting,the game model is assumed as a fixed property of each edge and will remain unaltered through game *** preliminary initiatives,we only consider two typical games（Prisoner’s dilemma game and Snowdrift game）,and all possible mixtures between them controlled by a *** performed simulations and theoretical analysis help us observe the remarkable improvement on cooperation levels in suitable parameter regions when the population are simultaneously provided with more than one type of ***,network heterogeneity helps to bring into existence of cooperator clusters and thus favors the survival of cooperators.

关键词： Collective Cooperation Evolutionary Game Theory Heterogeneity

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Visual Navigation Method for Indoor Mobile Robot Based on Extended BoW Model

Visual Navigation Method for Indoor Mobile Robot Based on Ex...

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第十二届中国智能机器人大会

作者： Xianghui Li Xinde Li Mohammad Omar Khyam Chaomin Luo Yingzi Tan Key Laboratory of Measurement and Control of CSE (Ministry of Education) School of Automation Sout Department of Electrical and Computer Engineering Faculty of Engineering National University of Si Department of Electrical and Computer Engineering University of Detroit Mercy Michigan USA

This paper proposes a new navigation method for mobile robots based on an extended BoW (Bag of Words) model for general object recognition in indoor *** SIFT (Scale-invariant Feature Transform) detection algorithm with the GPU (Graphic Processing Unit) acceleration technology is used to describe feature vectors in this ***,in order to add some redundant image information,statistical information of the spatial relationships of all the feature points in an image,i.e.,relative distances and angles,is used to extend the feature vectors in the original BoW ***,the unsupervised SVM (Support Vector Machine) classifier is used to classify ***,in order to navigate conveniently in unknown and dynamic indoor environments,a type of human-robot interaction method based on a hand-drawn semantic map is *** experimental results show that this new navigation technology for indoor mobile robots is very robust and highly effective.

关键词： general object recognition Bag of Words model mobile robot visual navigation

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Integrating Artificial Intelligence with Real-time Intracranial EEG Monitoring to Automate Interictal Identification of Seizure Onset Zones in Focal Epilepsy

arXiv

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arXiv 2018年

作者： Varatharajah, Yogatheesan Berry, Brent Cimbalnik, Jan Kremen, Vaclav van Gompel, Jamie Stead, Matt Brinkmann, Benjamin Iyer, Ravishankar Worrell, Gregory Electrical and Computer Engineering University of Illinois UrbanaIL61801 United States Mayo Systems Electrophysiology Laboratory Department of Neurology Mayo Clinic RochesterMN55905 United States Czech Institute of Informatics Robotics and Cybernetics Czech Technical University in Prague Prague 6166 36 Czech Republic Department of Neurosurgery Mayo Clinic RochesterMN55905 United States Department of Physiology & Biomedical Engineering Mayo Clinic RochesterMN55905 United States

An ability to map seizure-generating brain tissue, i.e., the seizure onset zone (SOZ), without recording actual seizures could reduce the duration of invasive EEG monitoring for patients with drug-resistant epilepsy. A widely-adopted practice in the literature is to compare the incidence (events/time) of putative pathological electrophysiological biomarkers associated with epileptic brain tissue with the SOZ determined from spontaneous seizures recorded with intracranial EEG, primarily using a single biomarker. Clinical translation of the previous efforts suffers from their inability to generalize across multiple patients because of (a) the inter-patient variability and (b) the temporal variability in the epileptogenic activity. Here, we report an artificial intelligence-based approach for combining multiple interictal electrophysiological biomarkers and their temporal characteristics as a way of accounting for the above barriers and show that it can reliably identify seizure onset zones in a study cohort of 82 patients who underwent evaluation for drug-resistant epilepsy. Our investigation provides evidence that utilizing the complementary information provided by multiple electrophysiological biomarkers and their temporal characteristics can significantly improve the localization potential compared to previously published single-biomarker incidence-based approaches, resulting in an average area under ROC curve (AUC) value of 0.73 in a cohort of 82 patients. Our results also suggest that recording durations between ninety minutes and two hours are sufficient to localize SOZs with accuracies that may prove clinically relevant. The successful validation of our approach on a large cohort of 82 patients warrants future investigation on the feasibility of utilizing intra-operative EEG monitoring and artificial intelligence to localize epileptogenic brain tissue. Broadly, our study demonstrates the use of artificial intelligence coupled with careful feature engineering in

关键词： Support vector machines

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Algorithms for joint operation of service robotic platform and set of UAVs in agriculture tasks 5

Algorithms for joint operation of service robotic platform a...

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5th IEEE Workshop on Advances in Information, Electronic and electrical engineering, AIEEE 2017

作者： Vu, Quyen Nguyen, Vinh Solenaya, Oksana Ronzhin, Andrey Mehmet, H. Department of Electromechanics and Robotics Saint Petersburg State University of Aerospace Instrumentation SUAI St. Petersburg Russia Laboratory of Autonomous Robotic Systems St. Petersburg Institute for Informatics and Automation Russian Academy of Sciences SPIIRAS St. Petersburg Russia Guzey Department of Electrical and Electronics Engineering Erzurum Technical University Erzurum Turkey

ISBN: (纸本)9781538641378

The problems of designing a mobile robotic platform carrying a set of unmanned aerial vehicles and containing a container for a payload are considered. The issues of transportation of robots and joint activity of robots with various functions in solving agriculture problems are discussed. The conceptual model of a mobile platform design is given. The main stages of the algorithmic model of the joint operation of the mobile platform and the set of unmanned aerial vehicles brought to the working area are described. © 2017 IEEE.

关键词： Manipulators

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