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IEEE Symposium Series on Computational Intelligence

作者： Ibrahim A. Hameed Robin T. Bye Ottar L. Osen Software and Intelligent Control Engineering Laboratory Faculty of Engineering and Natural Sciences Norwegian University of Science and Technology NTNU in Alesund Postboks 1517 NO-6025 Alesund Norway

ISBN: (纸本)9781509042418

In this paper, a new meta-heuristic optimization algorithm called Grey Wolf Optimizer (GWO) is applied to offshore crane design. An offshore crane is a pedestal-mounted elevating and rotating lifting device used to transfer materials or personnel to or from marine vessels, barges and structures whereby the load can be moved horizontally in one or more directions and vertically. Designing and building offshore cranes is a very complex process. It depends on the configuration of a large set of design parameters and is characterized by increased workability and functionality for the owner and cost effectiveness in the total cost of ownership. In an attempt to reduce time and cost involved in the design process, this paper defines a best set of design parameters and uses GWO for the automatic configuration of this set of parameters in a manner that increases the maximum safe working load of the crane and reduces its total weight. Results are verified by a comparative study with other Evolutionary Algorithms (EAs). Results show that the GWO algorithm is able to provide very competitive results compared to these well-known meta-heuristics.

关键词： virtual prototyping product optimization artificial intelligence design automation software framework

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Robust Vehicle Localization with GPS Dropouts

Robust Vehicle Localization with GPS Dropouts

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International Conference on intelligent and Advanced Systems

作者： Salman Ali Shaukat Muhammad Arif Umar Iqbal Bhatti Khalid Munawar Aamer Iqbal Bhatti Ubaid M. Al-Saggaf Center of Excellence in Intelligent Engineering Systems King Abdulaziz University Department of Computer Science Umm-Alqura University Department of Aeronautics and Astronautics Institute of Space Technology Control and Signal Processing Research Group Capital University of Science and Technology

ISBN: (纸本)9781509008469

Vehicle navigation systems rely on the correct positioning information and GPS is the best solution. However, in situations of GPS outage, like in tunnels and dense woods, the vehicle can lose track quickly. Modern vehicle navigation systems are mostly based on the vehicle dynamics;proprietary algorithms keep navigating for quite some time. But these solutions are expensive and add much to a vehicle's cost. This paper proposes a Kalman filter based dead-reckoning algorithm that fuses GPS information with the orientation information from a cheap IMU/INS, and the vehicle's speed accessed from its ECU. This low-cost system uses GPS and IMU/INS in a loosely coupled manner along with vehicle's speed and keeps supplying a quite accurate position information with GPS outage for significantly long intervals. With proper tuning and initialization, the proposed scheme has a potential to keep working in a completely GPS-denied situation.

关键词： Navigation GPS IMU/INS Dead-reckoning

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Handedness Recognition through Keystroke-Typing Behavior in Computer Forensics Analysis

Handedness Recognition through Keystroke-Typing Behavior in ...

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IEEE International Conference on Trust, Security and Privacy in Computing and Communications (TrustCom)

作者： Chao Shen Haodi Xu Haijun Wang Xiaohong Guan Science and Technology on Electronic Information Control Laboratory Chengdu China MOE Key Lab for Intelligent Networks and Network Security Xi'an Jiaotong University Xi'an China

ISBN: (纸本)9781509032068

Recognizing computer users' handedness provides important clues for profiling computer criminals in digital forensic analysis. Existing technologies for handedness recognition have two main problems that limit their applicability in the scenario of digital crimes: they can be intrusive, and they require costly equipment. Our solution is to infer users' handedness by analyzing keystroke-typing behavior. Field studies are first conducted to gather users' keystroke-typing data during their interaction with computers. Timing features are extracted to characterize users' typing rhythms, and the correlation between keystroke features and handedness is analyzed. Classification techniques are then developed for handedness recognition. Experimental results show that the handedness could be efficiently and accurately inferred from users' keystroke-typing behavior, with recognition rates expressed by the Area Under the ROC Curve (AUC) of 87.75%. To our knowledge, this is the first work that infers users' handedness based on their keystroke-typing biometric during interaction with computers, without dedicated and explicit actions that require attention from users.

关键词： Computers Feature extraction Forensics Speech recognition Fingerprint recognition Timing Bioinformatics

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Stabilizing Solution and Parameter Dependence of Modified Algebraic Riccati Equation with Application to Discrete-Time Network Synchronization

Stabilizing Solution and Parameter Dependence of Modified Al...

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作者： Chen, Michael Z. Q. Zhang, Liangyin Su, Housheng Chen, Guanrong Department of Mechanical Engineering University of Hong Kong Pokfulam Hong Kong Hong Kong School of Automation Image Processing and Intelligent Control Key Laboratory of Education Ministry of China Huazhong University of Science and Technology Wuhan430074 China Department of Electronic Engineering City University of Hong Kong KowloonHKG Hong Kong

This technical note deals with a modified algebraic Riccati equation (MARE) and its corresponding inequality and difference equation, which arise in modified optimal control and filtering problems and are introduced into the cooperative control problems recently. The stabilizing property of the solution to MARE is presented. Then, the uniqueness is proved for the almost stabilizing and positive semi-definite solution. Next, the parameter dependence of MARE is analyzed. An obtained parameter dependence result is finally applied to the study of semi-global synchronization of leader-following networks with discrete-time linear dynamics subject to actuator saturation. © 1963-2012 IEEE.

关键词： Riccati equations

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Lattice Boltzmann simulation of the gas-solid adsorption process in reconstructed random porous media

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Physical Review E 2016年第4期93卷 043101-043101页

作者： L. Zhou Z. G. Qu T. Ding J. Y. Miao MOE Key Laboratory of Thermal-Fluid Science and Engineering School of Energy and Power Engineering Xi’an Jiaotong University Xi’an 710049 China Beijing Key Laboratory of Space Thermal Control Technology Beijing Institute of Spacecraft System Engineering Beijing 100094 China

The gas-solid adsorption process in reconstructed random porous media is numerically studied with the lattice Boltzmann (LB) method at the pore scale with consideration of interparticle, interfacial, and intraparticle mass transfer performances. Adsorbent structures are reconstructed in two dimensions by employing the quartet structure generation set approach. To implement boundary conditions accurately, all the porous interfacial nodes are recognized and classified into 14 types using a proposed universal program called the boundary recognition and classification program. The multiple-relaxation-time LB model and single-relaxation-time LB model are adopted to simulate flow and mass transport, respectively. The interparticle, interfacial, and intraparticle mass transfer capacities are evaluated with the permeability factor and interparticle transfer coefficient, Langmuir adsorption kinetics, and the solid diffusion model, respectively. Adsorption processes are performed in two groups of adsorbent media with different porosities and particle sizes. External and internal mass transfer resistances govern the adsorption system. A large porosity leads to an early time for adsorption equilibrium because of the controlling factor of external resistance. External and internal resistances are dominant at small and large particle sizes, respectively. Particle size, under which the total resistance is minimum, ranges from 3 to 7 μm with the preset parameters. Pore-scale simulation clearly explains the effect of both external and internal mass transfer resistances. The present paper provides both theoretical and practical guidance for the design and optimization of adsorption systems.

关键词： Flows in porous media Lattice-Boltzmann methods

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基于探针图的并行型图顶点着色DNA计算模型

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Engineering 2018年第1期4卷 134-170页

作者：许进强小利张凯张成杨静 Key Laboratory of High Confidence Software Technologies of Ministry of Education Institute of SoftwareSchool of Electronics Engineering and Computer SciencePeking University Institute of Novel Computer Science and Intelligent Software Guangzhou University School of Computer Science Wuhan University of Science and Technology School of Control and Computer Engineering North China Electric Power University

目前DNA计算机研究中遇到的最大瓶颈是解空间指数爆炸问题,即随着问题规模的增大,所需要作为信息处理"数据"的DNA分子呈指数级增大。本文提出了一种新颖的图顶点着色DNA计算模型,该模型正是围绕着如何克服解空间指数爆炸问题... 详细信息

目前DNA计算机研究中遇到的最大瓶颈是解空间指数爆炸问题,即随着问题规模的增大,所需要作为信息处理"数据"的DNA分子呈指数级增大。本文提出了一种新颖的图顶点着色DNA计算模型,该模型正是围绕着如何克服解空间指数爆炸问题以及如何提高运行速度而设计的。其主要贡献有:（1）通过如下三种方法来克服解空间指数爆炸问题:顶点颜色集的确定方法;子图分解方法以及子图中的顶点优化排序方法;（2）设计了一种并行型聚合酶链反应（PCR）操作技术,应用这种技术一次可以对图中多条边来删除非解,使得生物操作次数大大减少,极大地提高了运行速度。本文以一个3-着色的61个顶点的图为例,实验表明,99%的非可行解在构建初始解空间时就被删除,并利用DNA自组装和并行PCR方法,通过识别、拼接以及组装等技术得到解。由于该模型对任意61个顶点的图是同样的操作方法,这就意味着,该模型的搜索能力可以达到O(359)。

关键词： DNA计算图顶点着色问题聚合酶链反应(PCR)

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Robust monocular visual odometry using optical flows for mobile robots

Robust monocular visual odometry using optical flows for mob...

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Chinese control Conference (CCC)

作者： Haifeng Li Zunhe Hu Xinwei Chen College of Computer Science and Technology Civil Aviation University of China Tianjin Fujian Provincial Key Laboratory of Information Processing and Intelligent Control Fuzhou Department of Computer Science Minjiang University Fuzhou

A robust optical flow-based visual odometry method using a single onboard camera is proposed in this paper. To improve the quality of the noisy optical flows, a correction method across multiple frames is developed. Furthermore, the optical flows in the plane at infinity are detected and removed as these optical flows have very low signal to noise ratio for robot translation estimation. Finally, a RANSAC approach for robot ego-motion estimation is proposed. Physical experiments are carried out and the results show that the proposed method is able to estimate the camera trajectory robustly with reasonable accuracy.

关键词： Adaptive optics Image motion analysis Computer vision Optical imaging Optical sensors Cameras Optical noise

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Robust reliable guaranteed cost control of positive interval systems with multiple time delays and actuator failure

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International Journal of Systems science 2016年第4期47卷 946-955页

作者： Zhang, Ji-Shi Wang, Yan-Wu Xiao, Jiang-Wen Chen, Yang School of Automation Huazhong University of Science and Technology Wuhan China School of Software Henan University Kaifeng China Key Laboratory of Image Processing and Intelligent Control Education Ministry of China Wuhan China

This paper addresses the robust reliable guaranteed cost control problem of positive interval systems with multiple time delays and actuator failure for a given quadratic cost function. Through constructing a Lyapunov-Krasovskii functional, a sufficient condition for the existence of robust reliable guaranteed cost controllers is established such that the closed-loop system is positive and asymptotically stable, and the cost function is guaranteed to be no more than a certain upper bound. Based on the linear matrix inequality method, a criterion for the design of robust reliable guaranteed cost controllers is derived which can tolerate all admissible uncertainties as well as actuator failure. Moreover, a convex optimisation problem with linear matrix inequality constraints is formulated to design the optimal robust reliable guaranteed cost controller which minimises the upper bound of the closed-loop system cost. A numerical example is given to show the effectiveness of the proposed methods. © 2014 Taylor & Francis.

关键词： Closed loop systems

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Transfer function of fluidic system in liquid-circular angular accelerometer

Transfer function of fluidic system in liquid-circular angul...

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IEEE Instrumentation and Measurement technology Conference

作者： Siyuan Cheng Meiling Wang Xiang Li Meifeng Xiao Mengyin Fu Xin Zheng Beijing Institute of Technology Key Laboratory of Complex System Intelligent Control and Decision Beijing China Nanjing University of Science and Technology Nanjing China The Third Academic of Aerospace and Technology Group of China Beijing China

ISBN: (纸本)9781467392211

In this paper, a new kind of liquid-circular angular accelerometer is studied. Based on electrokinetic phenomenon, this angular accelerometer is designed with a porous transducer and fluid mass. Due to the existence of electrical double layer between transducer and fluid mass, this angular accelerometer is able to convert angular acceleration input to electrical signal. The whole system is composed of fluidic system and molecular electronic system. Theoretical analysis and several experiments are implemented to obtain transfer function model of fluidic system. The flow in transducer satisfies the Darcy Law in the experiment and angular velocity input is proved to have no effect on the output. A prototype is designed to compare the output of theoretical model and experiments. All of the experiments prove that the fluidic system of this liquid-circular angular accelerometer can be seen as a first-order system, especially when the frequency of input is less than 30Hz and its transfer function is derived.

关键词： Transducers Fluids Prototypes Accelerometers Transfer functions Electron tubes Acceleration

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Real-time terrain estimation based on multi-scale radial basis function for unmanned ground vehicle

Real-time terrain estimation based on multi-scale radial bas...

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International Conference on Information and Automation (ICIA)

作者： Yi Yang Zhili Wang Xinghe Li Mengyin Fu Beijing Institute of Technology Beijing China Nanjing University of Science and Technology Nanjing China School of Automation and State Key Laboratory of Complex System Intelligent Control and Decision Beijing Institute of Technology Beijing China

ISBN: (纸本)9781509041039

Accurate terrain estimation is essential for unmanned ground vehicle (UGV) to achieve autonomous navigation. However, some existing approaches are difficult to reconstruct the 3D surface in real-time because of serious amount of computation. A method of environmental terrain estimation based on multi-scale radial basis function with a 3D lidar mounted on a moving vehicle was proposed in this paper. By combining kernel template with terrain grid map, the approach is applicable to the non-uniform density distribution of laser point cloud with the increasing detection range and improves the efficiency of calculation. What's more, the estimation of culverts and trees will be more accurate if treat the point cloud in separate layers for suspended obstacles problem. All terrain estimation approaches were verified with good performance in an interactive system, which is set up with Virtual Robot Experimentation Platform (VREP) and actual vehicle.

关键词： Three-dimensional displays Estimation Laser radar Kernel Lasers Surface reconstruction Real-time systems

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