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Towards AER VITE: building spike gate signal

Towards AER VITE: building spike gate signal

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IEEE international conference on Electronics, Circuits and systems

作者： Fernando Perez-Pena Arturo Morgado-Estevez Carlos Rioja-Del-Rio Alejandro Linares-Barranco Angel Jimenez-Fernandez Juan Lopez-Coronado Jose Luis Munoz-Lozano Applied Robotics Lab High School of Engineering University of Cadiz Department of Computer Architecture and Technology ETSI Computer Science University of Seville Automatic and System Engineering Department University Polytechnics of Cartagena

ISBN: (纸本)9781467312615

Neuromorphic engineers aim to mimic the precise and efficient mechanisms of the nervous system to process information using spikes from sensors to actuators. there are many available works that sense and process information in a spike-based way. But there are still several gaps in the actuation and motor control field in a spike-based way. Spike-based Proportional-Integrative-Derivative controllers (PID) are present in the literature. On the other hand, neuro-inspired control models as VITE (Vector Integration To End point) and FLETE (Factorization of muscle Length and muscle Tension) are also present in the literature. this paper presents another step toward the spike implementation of those neuro-inspired models. We present a spike-based ramp multiplier. VITE algorithm generates the way to achieve a final position targeted by a mobile robotic arm. the block presented is used as a gate for the way involved and it also puts the incoming movement on speed with a variable slope profile. Only spikes for information representation were used and the process is in real time. the software simulation based on Simulink and Xilinx System Generator shows the accurate adjust to the traditional processing for short time periods and the hardware tests confirm and extend the previous simulated results for any time. We have implemented the spikes generator, the ramp multiplier and the low pass filter into the Virtex-5 FPGA and connected this with an USB-AER (Address Event Representation) board to monitor the spikes.

关键词： spike spikes spikes Road gates Hardware Test Information representation Processing information ANION EXCHANGE RESIN Proportional Integral Derivative control Activation Pelvic Inflammatory Disease RAMP Ramps Multiplying circuits

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control strategies for HVAC systems

Control strategies for HVAC systems

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international Symposium on Computational Intelligence and Informatics

作者： Tamás Kardos Dénes Nimród Kutasi Katalin György Technical University of Cluj-Napoca Faculty of Automation and Computer Science Cluj-Napoca Romania Sapientia Hungarian University of Transylvania Faculty of Technical and Human Sciences Târgu Mureş Romania

ISBN: (数字)9781728156255

ISBN: (纸本)9781728156262

In the past decade, several control strategies have been studied and applied to building energy management systems with the goal of increased cost reduction and energy efficiency. this paper proposes two different control strategies for a Heating, Ventilation and Air-Conditioning (HVAC) system installed in a three-zone office building. Firstly, this study introduces the online parameter estimation method to identify the parameters of the original system. In addition, the adaptive version of the Model-based Predictive controller (MPC), which uses the previously estimated parameters, is connected to the system in order to regulate the inner temperatures of the three zones. the scope of the parameter estimator and model predictive controller's combination is to adjust the indoor temperatures to the reference values while achieving optimal operational costs and constant thermal comfort. Secondly, a PI controller tuned by weather conditions is briefly presented, and a comparative study is carried out between the two strategies' results. the main scope is to bear comparison between the classic and the optimal, more complex control strategies.

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Vulnerability Remediation in ICS Infrastructure Based on Source Code Analysis

Vulnerability Remediation in ICS Infrastructure Based on Sou...

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Roedunet international conference (RoEduNet)

作者： Ilca Lucian Florin Titus Bălan Faculty of Electrical Engineering and Computer Science Transilvania University of Brasov Brasov Romania

ISBN: (数字)9780738112657

ISBN: (纸本)9781665418850

the Industrial control systems (ICS) and its sub-processes, hardware and software, make possible the management and operation of industrial critical infrastructure and services such as: energy, water, defense, transportation. Nowadays, the biggest vendors on the market started developing for the ICS marketplace new systems with more power, control, stability, but these complex systems are susceptible to different threats such as: insider attack, third-party, technical or physical failure, external attacks. therefore, is critical to protect ICS assets. Paying attention to the ISA/IEC 62443 standard, this paper is proposing methods for source code analysis using open source tools that can be used in development or testing phase by ICS professionals in order to detect new vulnerabilities and bugs (e.g. weak encryption, code disclosure, clear text passwords) using a vulnerability remediation management tool in order to have a complete view of new and existing security breaches. the purpose of this research paper is providing valuable information to ICS developers to increase security level in the production area with very little effort for the Internet exposed Programmable Logic controllers (PLC).

关键词： Tools Integrated circuits Security Software computer bugs control systems Production

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Design and implementation of a flexible DMA controller in video codec system

Design and implementation of a flexible DMA controller in vi...

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international conference on Digital Signal Processing (DSP)

作者： Yinhui Wang Teng Wang Pan Zhou Xin'an Wang Key Lab of Integrated Micro-Systems Science Engineering and Application Peking University Shenzhen Graduate School Shenzhen China

To meet rigorous high sustained bandwidth demand and exploit the data level access parallelism, a new architecture of DMA controller aiming at multimedia applications is proposed in this paper. through analyzing the characteristics of video data transfer, we customize four shared channels with block address-conversion algorithm to adapt to many regular memory-access patterns. Furthermore, in order to transfer plenty of macro blocks whose addresses are not consecutive, channel descriptor model is applied into the design, which provides the most flexibility in managing the system's transfers. Besides, the design can also perform boundary extension, priority arbitrage and parameter prefetching as well as data rearrangement process. the proposed design is implemented in H.264/RVC encoder chip by SMIC 65nm technology with a clock frequency of 250MHz and 23.6K equivalent logic gates. Experimental results show that the customized design performs around 2~4 times faster than traditional DMA controller, and the lower ratio of setting time to transfer time proves that the burden of the processor is reduced significantly.

关键词： Registers Streaming media Reduced instruction set computing Digital signal processing computer architecture Prefetching Process control

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Bi-Level Nonstationary Kernels for Online Gaussian Process Regression

Bi-Level Nonstationary Kernels for Online Gaussian Process R...

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IEEE international conference on Automation science and Engineering (CASE)

作者： Hans J. He Alec Koppel Amrit Singh Bedi Mazen Farhood Daniel J. Stilwell Bradley Department of Electrical and Computer Engineering Virginia Tech Blacksburg VA USA JP Morgan AI Research New York NY Institute of Systems Research at the University of Maryland College Park MD USA Kevin T. Crofton Department of Aerospace and Ocean Engineering Virginia Tech Blacksburg VA USA

In this work, we consider realtime mapping of spatial phenomena using Gaussian processes (GP). For the case that the spatial field changes in variability over different areas, stationary GPs whose kernel hyperparameters are constant may be insufficient in capturing local behaviors. To accurately model and represent data with evolving variability, we propose to use a Gibbs kernel where the length scale is allowed to vary over space. the length scale is modeled as a secondary Gaussian process, and we formulate a maximum a posteriori solution to estimate training values for the length scale GP. Combining this kernel with online sparse methods and nearest neighbor approximations allows us to control computational complexity involved in training and inference, making our approach suitable for real-time applications. the resulting bi-level Gaussian process framework efficiently processes streaming data and maintains good prediction accuracy as measured by standardized mean squared error. Empirical analysis on a bathymetric dataset that has been acquired by an autonomous underwater vehicle suggests that our framework produces comparable predictive performance with respect to recent online GP regression methods while maintaining acceptable computational speed for streaming applications.

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Cyber-Physical System for Synthesizing Adaptive Fuzzy controllers Based on Modified ANFIS Neuro-Fuzzy Network

Cyber-Physical System for Synthesizing Adaptive Fuzzy Contro...

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international computer sciences and Information Technologies (CSIT)

作者： Serhii Vladov Victoria Vysotska Valerii Sokurenko Oleksandr Muzychuk Vasyl Lytvyn Vitalii Danylyk Department of Aircraft Maintenance Kremenchuk Flight College of Kharkiv National University of Internal Affairs Kremenchuk Ukraine Information Systems and Networks Department Lviv Polytechnic National University Lviv Ukraine Kharkiv National University of Internal Affairs Kharkiv Ukraine

ISBN: (数字)9798331542634

ISBN: (纸本)9798331542641

A system for synthesizing adaptive fuzzy controllers is proposed using a modified ANFIS neuro-fuzzy network. the controller is adjusted by combining gradient descent with the least squares' method. Studies show that this adaptive fuzzy controller greatly improves transient process quality over PID controllers and non-optimized fuzzy controllers, reducing overshoot by four times compared to an untuned controller and by half compared to a PID controller, with transient time cut by three times. Analysis confirms its adaptive properties and reliable operation with other control loops. the main limitation is needing membership functions that allow differentiation, and fitting onboard aviation systems.

关键词： Adaptive systems Heuristic algorithms computer network reliability Helicopters Process control Fuzzy neural networks Reliability Transient analysis Engines Least mean squares methods

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Comparison of EKF and Neural Network based wing shape estimation of a flexible wing demonstrator 19

Comparison of EKF and Neural Network based wing shape estima...

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19th international Forum on Aeroelasticity and Structural Dynamics, IFASD 2022

作者： Hadlaczky, Bence Zs. Friedman, Noémi Takarics, Béla Vanek, Bálint Institute for Computer Science and Control Eötvös Lóránd Research Network Kende u. 13-17 Budapest1111 Hungary

ISBN: (纸本)9788409423538

Structural flexibility of advanced, large-wingspan aircrafts is a crucial factor which has huge influence on the dynamics and stability of these vehicles. In case of a highly flexible wing structure, there is a need for an efficient observer to measure and predict the structural changes and dynamics of the wing. However, the modal coordinates of the wing cannot be measured directly so designing a state observer is necessary. Since the flexible aircraft model is nonlinear, the classical Kalman filter approach can have limited performance. Instead, two state observer approaches are investigated in the paper. First, we present a model-based method for designing an extended Kalman filter (EKF) when only a linear parameter-varying model (LPV) is available to describe the behaviour of the real aircraft. Second, we present a data-driven approach for this problem which is based on the new KalmanNet architecture. Finally, the results of the two methods are evaluated on the T-Flex model of the FLiPASED H2020 project. © Proceedings of the international Forum of Aeroelasticity and Structural Dynamics 2022, IFASD 2022.

关键词： Aeroelasticity

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Legend Pattern Calculation for Dynamic Traffic Management Using ILP

Legend Pattern Calculation for Dynamic Traffic Management Us...

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IEEE international conference on Automation science and Engineering (CASE)

作者： J.J. Verbakel J. van Meurs J.M. van de Mortel-Fronczak W.J. Fokkink J.E. Rooda Department of Mechanical Engineering Eindhoven University of Technology Eindhoven Netherlands Department of Computer Science Vrije Universiteit Amsterdam Amsterdam Netherlands

To ensure the safety of highway traffic, traffic management systems are used. In the Netherlands, a traffic management system is used consisting of roadside units, which are controlled from traffic centers. the roadside units are capable of showing legends, such as speed limits or directional instructions. Operators are monitoring the road 24/7, and during roadworks or when an incident happens, they can request a measure, e.g., a lane closure. the system then automatically determines the required legend pattern, comprising of directional arrows to lead traffic away from the closed lanes and speed limits on the remaining open lanes. this system is managed by Rijkswaterstaat, which is part of the Dutch ministry of infrastructure and water management. In this paper, integer linear programming is used to determine the legend pattern, based on operator input. the model adheres to the traffic rules used by Rijkswaterstaat. By using a model-based optimization approach, a solution is found which guarantees legend patterns follow the rules, while minimizing the impact on traffic. the model can be easily adapted to tryout different road configurations or alternative rules. Furthermore, a graphical user interface is created for validation of the generated solutions, by the operators from Rijkswaterstaat. this model is also applicable to highways that are not equipped with physical signaling equipment. therefore, it can be used to control two thirds of the Dutch highway network, where the current system is not implemented.

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the Technology for Countering the threats of Violation in the Information Security of Cloud Infrastructure

The Technology for Countering the Threats of Violation in th...

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international computer sciences and Information Technologies (CSIT)

作者： Olexander Belej Iryna Artyshchuk Maksym Kutelmakh Department of Computer Design Systems Lviv Polytechnic National University Lviv Ukraine

ISBN: (数字)9798331542634

ISBN: (纸本)9798331542641

Unlike known methods, the proposed methodology is based on the automatic calculation of exogenous parameters and does not require a universal threshold criterion. Understanding the control of malicious behavior is based on the description of attacks and the use of graph theory to combat them. When considering how to detect the malicious impact of attacks on cloud infrastructure instances. Improve the accuracy of detecting abnormal behavior: the level of short-term and medium-term false alarms is less than 7% and 5%, respectively. the positive detection rate of user attacks and abnormal behavior exceeded 75% and 80% in the short term. In the long term, it is 80%, in the medium term - 80%. the impact of automated reactive control allows you to automatically identify types of unauthorized transactions in short-term and medium-term forecasts with an accuracy of more than 80% and 78%, respectively.

关键词： Cloud computing Accuracy Information security Prediction methods Big Data Software Graph theory Virtual machines Libraries Monitoring

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Development of an unmanned aerial vehicle to study atmospheric boundary-layer turbulent structure 19

Development of an unmanned aerial vehicle to study atmospher...

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19th international conference on Aviation and Cosmonautics, AviaSpace 2020

作者： Chechin, D.G. Yu Artamonov, A. Ye Bodunkov, N. Yu Kalyagin, M. Shevchenko, A.M. Zhivoglotov, D.N. Air-sea Interactions Laboratory Obukhov Institute of Atmospheric Physics The Russian Academy of Sciences 3 Pyzevskiy per Moscow119017 Russia Department 704 Information and Control Systems of Aircraft Moscow Aviation Institute National Research University 4 Volokolamskoye Shosse Moscow125993 Russia Unmanned Aerial Vehicle Department Moscow Aviation Institute National Research University 4 Volokolamskoye Shosse Moscow125993 Russia Wave Processes in Supersonic Flows Laboratory Khristianovich Institute of Theoretical and Applied Mechanics The Siberian Branch The Russian Academy of Sciences 4/1 Institutskaya Street Novosibirsk630090 Russia Cloud Physics and Weather Modification Center Central Aerological Observatory 3 Ulitsa Pervomayskaya Moscow Oblast141700 Russia

One of the main challenges in the boundary-layer turbulence research consists in advancing turbulence theory towards describing turbulent regimes over inhomogeneous and irregular surface which is often the case in nature. Novel observational techniques are required to sample turbulence statistics in such conditions. To that aim, a light-weight payload for atmospheric turbulence measurements is designed and used on a vertical take-off and landing (VTOL) fixed-wing unmanned aerial vehicle (UAV). Such an observational platform complements traditional mast observations and makes it possible to sample turbulence statistics over remote and inhomogeneous landscapes. the advantages of the VTOL scheme consist in: i) minimizing the risk of the payload damage during landing;ii) less strict requirements to the surface conditions in the landing area. the turbulence payload consists of a miniature seven-hole probe, inertial navigation system and a fine-wire resistance thermometer. the seven-hole probe and the fine-wire temperature sensor were designed and calibrated as part of this study. In addition, the payload also includes a slow-response temperature-humidity sensor, relatively fast humidity sensor as well as an infrared surface temperature sensor. For the onboard data-logging, a computer based on Raspberry Pi 4 is used. the whole system has been successfully tested at the Tsimlyansk research station, Russia. © Published under licence by IOP Publishing Ltd.

关键词： Fixed wings

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