检索结果-内蒙古大学图书馆

2025 SICE International Symposium on control systems, SICE ISCS 2025

作者： Shikada, Kana Kawata, Masakatsu Sebe, Noburu Kyushu Institute of Technology Department of Creative Informatics Fukuoka Japan National Institute of Technology Kitakyushu College Department of Creative Engineering Fukuoka Japan Kyushu Institute of Technology Department of Intelligent and Control Systems Fukuoka Japan

ISBN: (纸本)9784907764852

This paper considers a minimum-order observer for the augmented system consisting of the nominal plant model and disturbance generating model (exosystem model). This paper shows that this minimum-order exosystem-model-based observer acts as a disturbance observer. Shikada and Sebe showed that the inverse-model-based disturbance observer can be realized as a full-order Luenberger-type observer for the nominal model. On the other hand, the exosystem-model-based disturbance observer is a full-order observer for the augmented system consisting of the nominal plant model and the exosystem model. Accordingly, the order of the exosystem-model-based disturbance observer is higher than that of the inverse-model-based disturbance observer. The minimum-order exosystem-model-based disturbance observer considered in this paper fills the gap of the difference in order. Furthermore, this paper also clarifies the one-to-one correspondence to the Luenberger-type disturbance observer for the nominal plant model. This correspondence shows that the minimum-order exosystem-model-based disturbance observer can achieve the same characteristics as the inverse-model-based disturbance observer. © 2025 The Society of Instrument and control Engineers.

关键词： Robust control

来源：评论

学校读者我要写书评

暂无评论

Distributed data-driven consensus control of multi-agent systems under switched uncertainties

引用

control Theory and technology 2023年第3期21卷 478-487页

作者： Wenjie Liu Yifei Li Gang Wang Jian Sun Jie Chen National Key Lab of Autonomous Intelligent Unmanned Systems Beijing Institute of TechnologyBeijing 100081China Beijing Institute of Technology Chongqing Innovation Center Chongqing 401120China Department of Control Science and Engineering Tongji UniversityShanghai 201804China

Cooperative control of multi-agent systems(MASs),particularly consensus control,has gained significant attention in the last two decades,thanks to the rapid and sustained development of distributed and networked *** this paper,we present some new results focused on consensus control of a set of unknown linear MASs(whose system matrices are unknown)under unknown switched uncertainties,with an emphasis on distributed data-driven *** proposed controller is end-to-end,designed by solving two data-based semi-definite programs(SDPs),which adjust to the changes of the uncertainty *** approach achieves asymptotic consensus of the MAS provided that the switching is slow enough and the uncertainty is *** illustrate the effectiveness of our proposed method through a numerical example.

关键词： Data-driven control Multi-agent systems Consensus-Switched uncertainties

来源：评论

学校读者我要写书评

暂无评论

Conditions of Informational Signal Receiving by Land Based Adaptive Antenna Arrays of Global Navigation Satellite systems 27

Conditions of Informational Signal Receiving by Land Based A...

引用

27th International Conference on Digital Signal Processing and its Applications, DSPA 2025

作者： Djigan, Victor I. Institute of Microdevices and Control Systems National Research University of Electronic Technology Moscow Russian Federation

ISBN: (纸本)9798331518752

This paper presents a methodology for assessing the possibility to receive the signals from the Global Navigation Satellite systems (GNSS) by the receivers with the Adaptive Antenna Arrays (AAA). The methodology is based on the estimation of the steady-state Signal-to-Noise Ratio (SNR) at the AAA output. The SNR is estimated over all the possible directions of the signal source angular locations. This methodology is demonstrated by using the examples of the steady-state behavior of the widely used Side Lobe Canceller (SLC) AAA and the Linearly Constrained (LC) AAA with the beam constraint. The simulation demonstrates that the satellite signals can be received from about 30% directions of the spherical angular space in the case of a rectangular AAA with 2 x 4 antennas after the suppressing of 7 interfering signals. It is about a 10% bigger value comparing to that of the AAA in the initial nonadaptive stage. If to consider the upper hemisphere of space only, then this value is doubled. In this experiment, both of the considered AAA demonstrate about the same performance from the interference suppression and informational signals receiving points of view. This efficiency might be different in another scenario. The generic architecture and computational procedures of the AAA used in the considered simulations and computations are also presented. The procedures are based on the usage of the Recursive Least Squares adaptive filtering algorithm. © 2025 IEEE.

关键词： adaptive antenna array Global Navigation Satellite systems Liner Constraint Recursive Least Squares Side Lobe Canceller Signal-to-Noise Ratio

来源：评论

学校读者我要写书评

暂无评论

Stability Analysis of Connected Vehicle Platoons with Markovian Packet Losses

引用

IEEE Internet of Things Journal 2025年第13期12卷 25300-25313页

作者： Wu, Yilin Zhao, Xiaoyan Shen, Zhiping Liu, Yonggui Li, Zeming Guangdong University of Education School of Computer Science Guangzhou510310 China Henan Normal University School of Mathematics and Statistics Xinxiang453007 China South China University of Technology Key Laboratory of Autonomous Systems and Network Control Ministry of Education The College of Automatic Science and Engineering Guangzhou510640 China

This article focuses on discussing the effects of inter-vehicular communication on the performance of platoon control. Different from the existing results established under a critical assumption that the fading channels are independent, this paper models the inter-vehicular communication as Markovian packet loss channel which can capture the temporal interdependencies of packet losses. Our aim is to decide whether there exists a distributed controller such that the underlying vehicle platoon can achieve mean square stability (MSS) over Markovian packet loss channels. First, for the scenario with identical Markovian packet losses, we begin by deriving a necessary and sufficient condition for the platoon MSS, which is established by utilizing the stability principles of Markov jump linear systems. Additionally, we propose a numerically verifiable criterion for MSS, which can be validated through the feasibility of linear matrix inequalities (LMIs). Furthermore, based on the modified Riccati inequality (MRI), we provide an analytical sufficient condition that ensures MSS for vehicle platoons. This condition is expressed in terms of the information flow topology (IFT) and the statistical parameters of Markov channels. Second, for the case with nonidentical packet dropouts, we introduce a Markovian loss channel based switching (MLCBS) model. Building upon this model, we further propose a sufficient conditon related to IFT and the transition probability matrix, and a distributed controller that is not only easy to implement but also enables the achievement of MSS for vehicle platoons with nonidentical packet dropouts. Ultimately, numerical experiments are performed to validate the obtained outcomes. © 2014 IEEE.

关键词： Packet loss Fading channels Delays Stability criteria Thermal stability Numerical stability Design methodology Correlation Connected vehicles Topology

来源：评论

学校读者我要写书评

暂无评论

Efficient and Safe Learning-based control of Piecewise Affine systems Using Optimization-Free Safety Filters 63

Efficient and Safe Learning-based Control of Piecewise Affin...

引用

63rd IEEE Conference on Decision and control, CDC 2024

作者： He, Kanghui Shi, Shengling Van Den Boom, Ton De Schutter, Bart Delft University of Technology Delft Center for Systems and Control Delft Netherlands Massachusetts Institute of Technology Department of Chemical Engineering CambridgeMA United States

ISBN: (纸本)9798350316339

control of piecewise affine (PWA) systems under complex constraints faces challenges in guaranteeing both safety and online computational efficiency. Learning-based methods can rapidly generate control signals with good performance, but rarely provide safety guarantees. A safety filter is a modular method to improve safety for any controller. When applied to PWA systems, a traditional safety filter usually need to solve a mixed-integer convex program, which reduces the computational benefit of learning-based controllers. We propose a novel optimization-free safety filter designed to handle state constraints that involve a combination of polyhedra and ellipsoids. The proposed safety filter only utilizes algebraic and min-max operations to determine safe control inputs. This offers a notable advantage compared with traditional safety filters by allowing for significantly more efficient computation of control signals. The proposed safety filter can be integrated into various function approximators, such as neural networks, enabling safe learning throughout the learning process. Simulation results on a bicycle model with PWA approximation validate the proposed method regarding constraint satisfaction, CPU time, and the preservation of sub-optimality. © 2024 IEEE.

关键词： Integer programming

来源：评论

学校读者我要写书评

暂无评论

automatic recognition of emergency vehicles in images from video recorders

Automatic recognition of emergency vehicles in images from v...

引用

Signal Processing Algorithms, Architectures, Arrangements and Applications (SPA)

作者： Julian Balcerek Paweł Pawłowski Krzysztof Dolny Julia Skotnicka Division of Signal Processing and Electronic Systems Institute of Automatic Control and Robotics Poznan University of Technology Poland

ISBN: (数字)9788362065486

ISBN: (纸本)9798350373806

In this article, a system for automatic recognition, including detection and classification, of emergency vehicles based on images from video recorders is proposed. The system utilizes YOLO v8 artificial neural network. Recognition accuracy tests were conducted on a specially prepared database of frames from real recordings. It includes marked and unmarked police vehicles (which are very difficult to distinguish and typically not included in automatic recognition systems), fire, ambulance, military vehicles and other reference images. The experiments concerned the recognition of vehicle types and the state of emergency lighting. The highest value of total (for all classes) F1 measure is over 86%. In selected classes the F1 reaches 91%, while precision is 94% and sensitivity is 89%. They can be considered as satisfactory results, what indicates the possibility of using the presented system in practice.

关键词： YOLO Image recognition Sensitivity Law enforcement Databases Emergency lighting Signal processing algorithms Military vehicles Artificial neural networks Recording

来源：评论

学校读者我要写书评

暂无评论

THE ROLE OF IDENTIFICATION IN DATA-DRIVEN POLICY ITERATION: A SYSTEM THEORETIC STUDY

arXiv

引用

arXiv 2024年

作者： Song, Bowen Iannelli, Andrea Institute for Systems Theory and Automatic Control University of Stuttgart Stuttgart Germany

The goal of this article is to study fundamental mechanisms behind so-called indirect and direct data-driven control for unknown systems. Specifically, we consider policy iteration applied to the linear quadratic regulator problem. Two iterative procedures, where data collected from the system are repeatedly used to compute new estimates of the desired optimal controller, are considered. In indirect policy iteration, data are used to obtain an updated model estimate through a recursive identification scheme, which is used in a certainty-equivalent fashion to perform the classic policy iteration update. By casting the concurrent model identification and control design as a feedback interconnection between two algorithmic systems, we provide a closed-loop analysis that shows convergence and robustness properties for arbitrary levels of excitation in the data. In direct policy iteration, data are used to approximate the value function and design the associated controller without requiring the intermediate identification step. After proposing an extension to a recently proposed scheme that overcomes potential identifiability issues, we establish under which conditions this procedure is guaranteed to deliver the optimal controller. Based on these analyses we are able to compare the strengths and limitations of the two approaches, highlighting aspects such as the required samples, convergence properties, and excitation requirement. Simulations are also provided to illustrate the results. © 2024, CC BY.

关键词： controllers

来源：评论

学校读者我要写书评

暂无评论

Linear Data-Driven Economic MPC with Generalized Terminal Constraint ⋆

引用

IFAC-PapersOnLine 2023年第2期56卷 5512-5517页

作者： Yifan Xie Julian Berberich Frank Allgöwer University of Stuttgart Institute for Systems Theory and Automatic Control 70550 Stuttgart Germany

In this paper, we propose a data-driven economic model predictive control (EMPC) scheme with generalized terminal constraint to control an unknown linear time-invariant system. Our scheme is based on the Fundamental Lemma to predict future system trajectories using a persistently exciting input-output trajectory. The control objective is to minimize an economic cost objective. By employing a generalized terminal constraint with artificial equilibrium, the scheme does not require prior knowledge of the optimal equilibrium. We prove that the asymptotic average performance of the closed-loop system can be made arbitrarily close to that of the optimal equilibrium. Moreover, we extend our results to the case of an unknown linear stage cost function, where the Fundamental Lemma is used to predict the stage cost directly. The effectiveness of the proposed scheme is shown by a numerical example.

关键词： Data-driven control economic model predictive control linear systems

来源：评论

学校读者我要写书评

暂无评论

SQLite embedded database in data chain devices 6

SQLite embedded database in data chain devices

引用

6th International Conference on Advanced Electronic Materials, Computers, and Software Engineering, AEMCSE 2023

作者： Wu, Yikun Luo, Hai Liu, Yu The Twentieth Research Institute of China Electronics Technology Group Corporation Xian China Xi'An Institute of Flight Automatic Control of Aviation Industry Xian China

ISBN: (纸本)9781510668249

As a carrier for data processing and transmission, the traditional data management methods can no longer effectively meet the requirements of high reliability and device performance. In this paper, we analyze the features and advantages of SQLite embedded database and propose the use of SQLite to manage data in embedded systems. The development process is described from various aspects such as creation, porting, compilation and verification of SQLite database, and the method of applying it to embedded system development is realized, which can be implemented into engineering practice. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

关键词： Embedded systems

来源：评论

学校读者我要写书评

暂无评论

automatic recognition of dangerous objects in front of the vehicle’s windshield

Automatic recognition of dangerous objects in front of the v...

引用

Signal Processing Algorithms, Architectures, Arrangements and Applications (SPA)

作者： Julian Balcerek Paweł Pawłowski Julia Cierpiszewska Łukasz Kus Piotr Zborowski Division of Signal Processing and Electronic Systems Institute of Automatic Control and Robotics Poznan University of Technology Poland

ISBN: (数字)9788362065486

ISBN: (纸本)9798350373806

In this article, an automatic recognition system, of objects that threaten the safety of vehicle users is proposed. These objects are detected in front of the vehicle’s windshield based on images from video recorders and then classified. The tests were conducted using artificial neural networks on a specially prepared database of frames from real recordings. Recognized objects include: car wheels, car parts, birds, stones and ice. They were recognized in single- and multi-class detections for various parameters of the network model. Detection efficiency of $95 \%$ was achieved in the best case.

关键词： Databases Wheels Signal processing algorithms Artificial neural networks Birds Ice Safety Recording Automobiles Automotive components

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：