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2022 IEEE Aerospace Conference, AERO 2022

作者： Liu, Bangshang Sazdovski, Vasko Janschek, Klaus Institute of Automation Technische Universitaet Dresden Faculty of Electrical and Computer Engineering Dresden01062 Germany

ISBN: (数字)9781665437608

ISBN: (纸本)9781665437608

This paper proposes a relative navigation framework using flash LiDAR aided-inertial navigation and surfel grid maps for in-situ autonomous exploration of small solar system bodies' (SSSB) surfaces. The key idea of the relative navigation is division of an entire flight area into several sub-areas, in each of which local navigation estimates and a local map are created in a node frame representing local frame in that sub-area. By changing the node frame in different sub-areas, estimation error and mapping error are bounded and do not accumulate. Varying local gravity vector on the SSSB surface is taken into account when a new node frame is defined. Our flash LiDAR pre-processing applies a scan-to-map matching algorithm and provides direct observation of spacecraft's position and attitude in the node frame to an error state Kalman filter. The surfel grid map representing local terrestrial environment around the spacecraft permits efficient scan-to-map matching and straightforward analysis on the SSSB surface. Simulation tests in a specialized high fidelity simulated SSSB environment present results of validation and performance evaluation of our relative navigation solution and show the viability of this novel navigation solution. © 2022 IEEE.

关键词： Errors

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Generic system architecture for behavior-based mobile robot control using fuzzy logic

Generic system architecture for behavior-based mobile robot ...

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2012 International Conference on Control, automation and Information Sciences, ICCAIS 2012

作者： Mai, Ngoc Anh Janschek, Klaus Institute of Automation Faculty of Electrical and Computer Engineering Technische Universitaet Dresden 01069 Dresden Germany

ISBN: (纸本)9781467308137

This paper presents a modular architecture for behavior-based mobile robot control systems using fuzzy logic. The behaviors are functionally classified into two separated modules concerning collision-free motion control and goal-oriented path planning using topological maps. The applied fuzzy logic approach allows flexible and robust behaviors and behavior design in complex environments. The performance of the system is tested and demonstrated successfully through experiments in a real office environment using a qualitative bio-inspired optical flow perception. © 2012 IEEE.

关键词： Fuzzy logic

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A Novel Model for Context Conflict Resolution Basec on Set Pair Analysis

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China Communications 2014年第A02期11卷 70-78页

作者： DUO Lin LAI Xiaoyang LIU Zengli CHEN Xi School of Computer and Communication Engineering University of Science and Technology Beijing Beijing 100083 P.R. China Faculty of Information Engineering and Automation Kunming University of Science and Technology Kunming 650500 RR. China

Context-aware plays a pivotal role in the wisdom network of information processing. Due to the limited resources, context conflict is inevitable in context-aware. User satisfaction is a good reflection for the wisdom degree of the network. In this paper, considering the user satisfaction, we propose a novel context-aware conflict solution model based on set pair Analysis （SPA）. The model obtains the best server mode by the maximum satisfaction connection degree to solve the conflict in context-aware. The simulation analysis shows that the proposed method is effective and can solve many users competition for the same scene of conflict.

关键词： context-aware context conflict SPA satisfaction connection degree

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Dual graph error propagation model for mechatronic system analysis

Dual graph error propagation model for mechatronic system an...

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作者： Morozov, Andrey Janschek, Klaus Institute of Automation Faculty of Electrical and Computer Engineering Technische Universität Dresden 01187 Germany

ISBN: (纸本)9783902661937

Error propagation analysis is an important part of a system development process. This paper addresses a model based analysis of spreading of data errors through mechatronic systems. Error propagation models for such kind of systems must use an abstraction level, which allows the proper mapping of the mutual interaction of heterogeneous system elements such as software, hardware and physical parts. A number of appropriate approaches have been introduced in recent years. The majority of them are based only on a data ow analysis. It is shown in this paper that for a complete picture the system control ow has to be considered as well. A new approach based on probabilistic control ow and data ow graphs is presented. The structures of the graphs can be derived systematically from an UML/SysML model of a system. The knowledge about an operational system profile allows the definition of additional system properties. Initially this model was developed for software errors localization. This paper shows its applicability to the error propagation analysis of an entire mechatronic system. The paper presents the modeling concept, the complete mapping process and application of the model for error localization. A reference robot control example demonstrates the main modeling steps. © 2011 IFAC.

关键词： Error analysis

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Agent DEVS simulation of the evacuation process from a commercial building during a fire 12th

Agent DEVS simulation of the evacuation process from a comme...

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12th International Scientific and Technical Conference computer Science and Information Technologies, CSIT 2017

作者： Kulakowski, Andrzej Rogala, Bartosz Faculty of Electrical Engineering Automation Control and Computer Science Kielce University of Technology Kielce Poland

ISBN: (纸本)9783319705804

The paper describes a simulation application for the process of evacuating people from a building in the event of a fire. This simulation was developed as an agent system using the DEVS formalism. The following sections show the design and implementation of such a system using the Adevs library. A series of simulation tests were then performed for different simulation scenarios. © 2018, Springer International Publishing AG.

关键词： Office buildings

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Accelerated Algorithm for Counting the Amount of Numbers in Specified Ranges

Accelerated Algorithm for Counting the Amount of Numbers in ...

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2022 Conference of Russian Young Researchers in Electrical and Electronic engineering, ElConRus 2022

作者： Krutikov, Alexander K. Strabykin, Dmitry A. Lapitsky, Alexey A. Vyatka State University Faculty of Automation and Computer Engineering Department of Electronic Computers Kirov Russia

ISBN: (纸本)9781665409933

An accelerated algorithm for calculating the number of array numbers that fit in each of the specified ranges is proposed. The algorithm assumes that the number of ranges is a multiple of the power of two, the bit depth of the maximum number of the array does not exceed the bit depth of the memory cell used to store it. The acceleration of counting numbers is based on the conversion of the analyzed number of the source array to the address of the memory cell corresponding to the range of the number. This conversion reduces the time for counting the number of numbers in the source array that fit into the specified ranges by eliminating memory accesses to read the boundary values of the addresses of the ranges. The time estimates of the algorithm execution are given, the prospects of using the algorithm in solving problems are noted. © 2022 IEEE.

关键词： Array processing

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Modeling and control of system with pump and pipeline by pole placement method

Modeling and control of system with pump and pipeline by pol...

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作者： Brezina, Tomas Kovar, Jiri Hejc, Tomas Faculty of Mechanical Engineering Brno University of Technology Institute of Automation and Computer Science Czech Republic

ISBN: (纸本)9788080754778

The present paper deals with control of system consists surge tank, pump a and pipeline. Model of this system is based on hydro-electrical analogy. For purpose of control it is designed a regulator with estimator. Regulator is developed by pole-placement method. Numerical solutions of this model are presented at the end of this article. © 2011 Univ of Trencin.

关键词： Pipelines

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A New Fuzzy Adaptive Algorithm to Classify Imbalanced Data

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computers, Materials & Continua 2022年第1期70卷 73-89页

作者： Harshita Patel Dharmendra Singh Rajput Ovidiu Petru Stan Liviu Cristian Miclea School of Information Technology&Engineering Vellore Institute of TechnologyVellore632014India Technical University of Cluj Napoca Faculty of Automation and Computer ScienceCluj Napoca400114Romania

Classification of imbalanced data is a well explored issue in the data mining and machine learning community where one class representation is overwhelmed by other *** Imbalanced distribution of data is a natural occurrence in real world datasets,so needed to be dealt with carefully to get important *** case of imbalance in data sets,traditional classifiers have to sacrifice their performances,therefore lead to *** paper suggests a weighted nearest neighbor approach in a fuzzy manner to deal with this *** have adapted the‘existing algorithm modification solution’to learn from imbalanced datasets that classify data without manipulating the natural distribution of data unlike the other popular data balancing *** K nearest neighbor is a non-parametric classification method that is mostly used in machine learning *** classification with the nearest neighbor clears the belonging of an instance to classes and optimal weights with improved nearest neighbor concept helping to correctly classify imbalanced *** proposed hybrid approach takes care of imbalance nature of data and reduces the inaccuracies appear in applications of original and traditional *** show that it performs well over the existing fuzzy nearest neighbor and weighted neighbor strategies for imbalanced learning.

关键词： Machine learning fuzzy classification nearest neighbor adaptive approach optimal weights

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Automated stroke lesion detection and diagnosis system

Automated stroke lesion detection and diagnosis system

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2017 International MultiConference of Engineers and computer Scientists, IMECS 2017

作者： Saad, N. Mohd Noor, N.S.M. Abdullah, A.R. Muda, Sobri Muda, A.F. Rahman, N. N. S. Abdul Center for Robotics and Industrial Automation Faculty of Electronics and Computer Engineering Universiti Teknikal Malaysia Melaka Malaysia Center for Robotics and Industrial Automation Faculty of Electronics and Computer Engineering Universiti Teknikal Malaysia Melaka Malaysia Center for Robotics and Industrial Automation Faculty of Electrical Engineering Universiti Teknikal Malaysia Melaka Malaysia Radiology Department Fakulti Perubatan dan Sains Kemanusiaan Universiti Putra Malaysia Malaysia Faculty for Electronics and Computer Engineering Universiti Teknikal Malaysia Melaka Malaysia Center for Robotics and Industrial Automation Faculty of Electronics and Computer Engineering Universiti Teknikal Malaysia Melaka Malaysia

ISBN: (纸本)9789881404732

This study proposes a technique for automated detection and diagnosis of stroke lesions based on diffusion-weighted imaging (DWI). The technique consists of several stages which are pre-processing, segmentation, feature extraction, and classification. The proposed analytical framework of this study is based on Fuzzy C-Means (FCM) segmentation, statistical parameters for features extraction and rule-based classification. The three-dimensional (3D) view is developed to enable observing directions of the gained 3D structure along the three axes. The segmentation results have been validated by using Jaccard and Dice indices, false positive rate (FPR), and false negative rate (FNR). The results for Jaccard, Dice, FPR and FNR of acute stroke are 0.7, 0.84, 0.049 and 0.205, respectively. The accuracy for acute stroke is 90% and chronic stroke is 70%, while the sensitivity and the specificity is 84.38% and 83.33%, respectively.

关键词： Extraction

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Discovering admissible Web services with uncertain QoS

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Frontiers of computer Science 2015年第2期9卷 265-279页

作者： Xiaodong FU Kun YUE Li LIU Ping ZOU Yong FENG Yunnan Provincial Key Laboratory of Computer Technology Application Faculty of Information Engineering and Automation Kunming University of Science and Technology Kunming 650500 China School of Information Science and Engineering Yunnan University Kunming 650091 China Faculty of Management and Economics Kunming University of Science and Technology Kunming 650093 China

Open and dynamic environments lead to inher- ent uncertainty of Web service QoS （Quality of Service）, and the QoS-aware service selection problem can be looked upon as a decision problem under uncertainty. We use an empiri- cal distribution function to describe the uncertainty of scores obtained from historical transactions. We then propose an approach to discovering the admissible set of services in- cluding alternative services that are not dominated by any other alternatives according to the expected utility criterion. Stochastic dominance （SD） rules are used to compare two services with uncertain scores regardless of the distribution form of their uncertain scores. By using the properties of SD rules, an algorithm is developed to reduce the number of SD tests, by which the admissible services can be reported pro- gressively. We prove that the proposed algorithm can be run on partitioned or incremental alternative services. Moreover, we achieve some useful theoretical conclusions for correct pruning of unnecessary calculations and comparisons in each SD test, by which the efficiency of the SD tests can be im- proved. We make a comprehensive experimental study using real datasets to evaluate the effectiveness, efficiency, and scal- ability of the proposed algorithm.

关键词： Web services uncertain QoS partial preference,empirical distribution function stochastic dominance admis-sible set

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