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2021 IEEE 2nd International Conference on Signal, Control and Communication (SCC)最新文献

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Implementation and Evaluation of the ACE DTLS Framework over Internet of Things Devices 基于物联网设备的ACE DTLS框架的实现与评估
Pub Date : 2021-12-20 DOI: 10.1109/scc53769.2021.9768365
Jacob Johansson, Ali Hassan Sodhro, A. Gurtov
Internet of Things (IoT)-devices are becoming more advanced and powerful than ever, and the application potential is increasing rapidly. This paper significantly contributes in three ways. First, it modifies, extends and implements the well-known security-driven authorization in a constrained environment-datagram transport layer security (ACE-DTLS) protocol’s framework on resource-constrained IoT devices in a local network. Second, ACE-DTLS framework is compared with the Baseline method by adopting performance indicators for example, power dissipation, PLR, latency, overall network performance and a resource server. Third, radio duty cycles (RDC) are adopted for optimizing the energy efficiency of the constrained IoT devices during CPU processing. Experimental environment was examined with three tests i.e., COAP, COAP+token, and COAP+DTLS by putting router at three main distances (1m, 6m and 12m). It is observed that COAP has less PLR, power drain and latency than COAP+token and COAP+DTLS, while COAp+DTLS shows relatively high latency, power drain and PLR at 6m and 12m distances.
物联网(IoT)设备正变得越来越先进和强大,其应用潜力正在迅速增加。本文在三个方面做出了重要贡献。首先,在本地网络中资源受限的物联网设备上,修改、扩展并实现了众所周知的在受限环境下的安全驱动授权-数据报传输层安全(ACE-DTLS)协议框架。其次,采用功耗、PLR、时延、整体网络性能、资源服务器等性能指标对ACE-DTLS框架与Baseline方法进行比较。第三,采用无线电占空比(RDC)优化受限物联网设备在CPU处理过程中的能量效率。实验环境通过三个测试,即COAP, COAP+令牌和COAP+DTLS,通过将路由器置于三个主要距离(1m, 6m和12m)来检查。观察到COAP的PLR、功率损耗和延迟比COAP+token和COAP+DTLS低,而COAP+DTLS在6m和12m距离上的延迟、功率损耗和PLR相对较高。
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引用次数: 1
Modeling switched behavior to monitor energy-based dynamical systems 建模切换行为以监测基于能量的动力系统
Pub Date : 2021-12-20 DOI: 10.1109/scc53769.2021.9768383
Dhaou Garai, R. Harabi, F. Bacha
Nowadays, a wide number of manufacturing systems are usually coupled discrete and continuous dynamic behaviors. This paper deals with the design of a novel framework related to the fault diagnosis issue merging quantitative and qualitative reasoning so as to accurately monitor several fault kinds affecting such hybrid systems. Two different structural fault diagnosis approaches are compared. Firstly, the Hybrid Bond Graph (HBG) representation (quantitative way) is used to obtain the Global Analytical Redundancy Relations (GARRs) dedicated to Fault Detection and Isolation (FDI) tasks. Secondly, the qualitative approach utilizes the possible conflicts which are deduced from the Directed Behavioral Hypergraph (DBH) description and able to study the temporal and qualitative impacts related to sensor and actuator faults. Afterwards qualitative and quantitative methods are compared and discussed so as to analysis the ability to diagnose the dynamical hybrid systems.
目前,大量的制造系统通常具有离散和连续的耦合动态行为。本文设计了一种将定量推理与定性推理相结合的故障诊断框架,以准确监测影响混合系统的几种故障类型。比较了两种不同的构造故障诊断方法。首先,采用混合键图(HBG)表示(定量方法),得到用于故障检测与隔离(FDI)任务的全局解析冗余关系(garr);其次,定性方法利用从有向行为超图(DBH)描述中推导出的可能冲突,能够研究与传感器和执行器故障相关的时间和定性影响。然后对定性和定量方法进行了比较和讨论,以分析动态混合系统的诊断能力。
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引用次数: 1
Fractional Predictive Control of Multi-Input Multi-Output Systems 多输入多输出系统的分数预测控制
Pub Date : 2021-12-20 DOI: 10.1109/scc53769.2021.9768370
Chouaibi D., Chagra W.
Considering the fact that most of physical processes have MIMO models and the fact of fractional order model ability in accurate representing real plants, the aim of the paper is to realize a model predictive control scheme for MIMO fractional order systems. The developed control algorithm, based on Grunwald-Letnikov method, offers reduced calculation cost which is illustrated through simulation results.
考虑到大多数物理过程都具有MIMO模型和分数阶模型能够准确表征真实对象的事实,本文的目的是实现一种MIMO分数阶系统的模型预测控制方案。基于Grunwald-Letnikov方法的控制算法降低了计算成本,仿真结果表明了这一点。
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引用次数: 1
Model Reference Adaptive Control for Temperature Regulation of Continuous Stirred Tank Reactor 连续搅拌釜式反应器温度调节模型参考自适应控制
Pub Date : 2021-12-20 DOI: 10.1109/scc53769.2021.9768396
A. Abougarair, N. A. Shashoa
CSTR (Continuous Stirred Tank Reactor) is a major challenge in process control that has sparked a lot of research in the chemical and control engineering. The nonlinear and coupled nature of CSTR makes designing a robust control with a larger working region difficult. Conventional PID (Proportional Integral Derivative) and adaptive control are described in this work for temperature control. For adaptive control system, the MRAC strategy is utilized and the control law is created by the Lyapunov stability method. Additionally, the robustness and efficacy of the MRAC are confirmed compared with PID controller. The suggested controllers' performance is verified using the steady-state error, time specification criteria and tracking of the reference signal in presence of uncertainty. The simulation results clearly show that the MRAC method provides adequate performance in terms of process functional improvements, and more flexibility, in addition to, improves system-tracking precision in control action compared with the PID.
连续搅拌槽式反应器(CSTR)是过程控制领域的一个重大挑战,引起了化学和控制工程领域的大量研究。CSTR的非线性和耦合特性使得设计具有更大工作区域的鲁棒控制变得困难。本文介绍了传统PID(比例积分导数)和自适应控制的温度控制方法。对于自适应控制系统,采用MRAC策略,利用李雅普诺夫稳定性方法建立控制律。通过与PID控制器的比较,验证了MRAC的鲁棒性和有效性。利用稳态误差、时间规范标准和存在不确定性时参考信号的跟踪来验证所建议控制器的性能。仿真结果清楚地表明,与PID相比,MRAC方法在过程功能改进方面提供了足够的性能,并且具有更大的灵活性,并且在控制动作上提高了系统跟踪精度。
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引用次数: 4
Analysis and Control of the Dynamic Walking of the Compass Biped Walker Using Poincaré Maps: Comparison Between Two Design Approaches 基于poincarcarcars地图的罗盘两足步行器动态行走分析与控制:两种设计方法的比较
Pub Date : 2021-12-20 DOI: 10.1109/scc53769.2021.9768342
Wafa Znegui, H. Gritli, S. Belghith
The present work aspires to summarize and compare previous findings treating the analyze and control of the human-like passive walking dynamics of the compass-gait biped walker (CGBW). Our development is based on examining the impulsive hybrid nonlinear dynamics (IHNLD) describing the walking process of the CGBW and defining a linear dynamics around a period-1 passive hybrid limit cycle (p1-PHLC). Based on Taylor series approximation, we analytically demonstrate several expressions of the the Poincaré map (PM) and controlled Poincaré map (CPM). The control of the passive walking of the CGBW is the main objective behind this paper. Therefore, we present two approaches leading to stabilize period-1 fixed point of the PMs and particularly we will compare between two control laws and promote their low energy consumption.
本研究旨在总结和比较以往的研究成果,分析和控制罗盘步态双足步行器(CGBW)的类人被动步行动力学。我们的研究基于脉冲混合非线性动力学(IHNLD),描述了CGBW的行走过程,并定义了周期为1的被动混合极限环(p1-PHLC)周围的线性动力学。基于泰勒级数近似,我们解析地证明了庞卡罗映射(PM)和受控庞卡罗映射(CPM)的几种表达式。本文研究的主要目的是控制CGBW的被动行走。因此,我们提出了两种稳定pm周期1不动点的方法,并对两种控制律进行了比较,以促进其低能耗。
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引用次数: 1
Energy optimization in a D2D communication based on a fuzzy system 基于模糊系统的D2D通信能量优化
Pub Date : 2021-12-20 DOI: 10.1109/scc53769.2021.9768360
Anouar Ben Abdennour, M. O. Kabaou, B. Rhaimi
The work presented in this paper is part of Device to device (D2D) communications in 5G network. Attention deals with one of an important key factor conditionning this type of communication. This defines energy conservation parameter in D2D communication. We will first propose an algorithm for energy conservation and connectivity maintaining based on the fuzzy logic approach. This consists on developing a decision support system to choose an appropriate selected relay for the communication. In such manner, one would minimize the energy consumed and consequently the network’s lifetime will be maximized.
本文介绍的工作是5G网络中设备到设备(D2D)通信的一部分。注意力是制约这类交流的一个重要关键因素。定义了D2D通信中的节能参数。我们将首先提出一种基于模糊逻辑方法的节能和连通性保持算法。这包括开发一个决策支持系统,为通信选择适当的中继。通过这种方式,人们可以将消耗的能量最小化,从而使网络的寿命最大化。
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引用次数: 1
Left invertibility of hybrid dynamical systems: a framework for flying capacitor multilevel converters 混合动力系统的左可逆性:飞电容多电平变换器的框架
Pub Date : 2021-12-20 DOI: 10.1109/scc53769.2021.9768387
Sana Othman, L. Sbita, J. Barbot, Mohamad Alaa Eddin Alali, M. Ghanes
In this paper, we suggest a hybrid observer consisting of a DC-DC Flying Capacitor Multilevel Converter (FCMC) with unknown discrete state. This proposed system consists of a dc-link, 4-level converter with an RL load. The state vector of the considered class of switched linear system presents unobservable modes. An observability concept known as (Z(TN)-Observability) is used to solve such problem. Following that, a hybrid observer is designed based on a coupling between a continuous and discrete observer. Indeed, this approach assumes that the available variables such as the output measurement and the estimated continuous state allow the reconstruction of the unknown discrete state which permits to detect a delay time or a produced default in these states. Finally, to validate this method some simulation results are given in order to show the effectiveness of the proposed system.
本文提出了一种由离散状态未知的DC-DC飞电容多电平变换器(FCMC)组成的混合观测器。该系统由一个带RL负载的直流链路4电平变换器组成。所考虑的切换线性系统的状态向量呈现不可观测模式。可观测性概念(Z(TN)-可观测性)用于解决这一问题。然后,基于连续观测器和离散观测器之间的耦合设计了混合观测器。事实上,这种方法假设可用的变量,如输出测量和估计的连续状态,允许重建未知的离散状态,从而可以检测到这些状态中的延迟时间或产生的默认值。最后,为了验证该方法的有效性,给出了仿真结果。
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引用次数: 0
The Solutions of Two Dimensional Finite Square Well Potential Problem Using the Finite Difference Time Domain Method 二维有限平方势问题的时域有限差分解法
Pub Date : 2021-12-20 DOI: 10.1109/scc53769.2021.9768389
A. Hamed, Huwaida K. Elgweri, M. Mansor
We calculate the numerical eigenfunctions and their corresponding energy eigenvalues of the higher excited states for two dimensional finite square well potential, by solving the Schrödinger equation using the finite difference time domain method (FDTD). The iterative procedure involved in this method was improved using symmetric arguments to calculate the lower angular excited states, and we extent this improved method to calculate any excited state directly using suitable initial guess wave function that is close to the desired excited state. This suitable initial guess wave function is calculated analytically using the separation of variables technique. In this paper, our calculations include two essential parts. First, in order to confirm the applicability of the separation of variables technique, we compare the lower states, namely, the ground state, the first angular excited state and the second angular excited state, were calculated by using this technique with their corresponding numerically exact states. Therefore, we can consider the solutions of the separation of variables technique as a semi-analytical approximation. Second, we take advantage of this approach to get any desired excited state directly if it exists.
利用时域有限差分法(FDTD)求解Schrödinger方程,计算了二维有限平方势高激发态的数值特征函数及其对应的能量特征值。改进了该方法的迭代过程,采用对称参数来计算低角度激发态,并将改进后的方法扩展到使用接近期望激发态的合适初始猜测波函数直接计算任何激发态。利用分离变量技术,对合适的初始猜测波函数进行了解析计算。在本文中,我们的计算包括两个基本部分。首先,为了验证变量分离技术的适用性,我们将用该技术计算的较低状态,即基态、第一角激发态和第二角激发态与其对应的数值精确状态进行了比较。因此,我们可以把分离变量技术的解看作是一种半解析近似。其次,我们利用这种方法直接得到任何期望的激发态,如果它存在。
{"title":"The Solutions of Two Dimensional Finite Square Well Potential Problem Using the Finite Difference Time Domain Method","authors":"A. Hamed, Huwaida K. Elgweri, M. Mansor","doi":"10.1109/scc53769.2021.9768389","DOIUrl":"https://doi.org/10.1109/scc53769.2021.9768389","url":null,"abstract":"We calculate the numerical eigenfunctions and their corresponding energy eigenvalues of the higher excited states for two dimensional finite square well potential, by solving the Schrödinger equation using the finite difference time domain method (FDTD). The iterative procedure involved in this method was improved using symmetric arguments to calculate the lower angular excited states, and we extent this improved method to calculate any excited state directly using suitable initial guess wave function that is close to the desired excited state. This suitable initial guess wave function is calculated analytically using the separation of variables technique. In this paper, our calculations include two essential parts. First, in order to confirm the applicability of the separation of variables technique, we compare the lower states, namely, the ground state, the first angular excited state and the second angular excited state, were calculated by using this technique with their corresponding numerically exact states. Therefore, we can consider the solutions of the separation of variables technique as a semi-analytical approximation. Second, we take advantage of this approach to get any desired excited state directly if it exists.","PeriodicalId":365845,"journal":{"name":"2021 IEEE 2nd International Conference on Signal, Control and Communication (SCC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116780510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Zonotope based Fault Tolerant Control for Discrete-Time Linear Time-Invariant Systems 基于分区的离散线性定常系统容错控制
Pub Date : 2021-12-20 DOI: 10.1109/scc53769.2021.9768392
Leila Dadi, Haifa Ethabet, M. Aoun
This paper considers Faut Tolerant Control (FTC) problem for discrete-time Linear Time-Invariant systems (LTI) affected by faults on actuator. First, zonotope-based interval estimation technique is proposed, which integrate robust observer design with zonotopic analysis. By introducing H∞ performances in the observer design, the designed technique reduce the effects of uncertainties and improve the interval estimation accuracy. Based on the robust designed observer, the interval state estimation can be realized via a zonotopic analysis. Second, a FTC is designed to stabilize the close-loop system subject to actuator faults. The control law design is based on zonotopic technique, guaranteeing closed-loop stability. Simulation results are provided to illustrate the performance of the proposed method.
研究了受执行器故障影响的离散线性定常系统的容错控制问题。首先,提出了基于分区的区间估计技术,该技术将稳健观测器设计与分区分析相结合。通过在观测器设计中引入H∞性能,减少了不确定性的影响,提高了区间估计精度。在鲁棒观测器的基础上,通过分众分析实现区间状态估计。其次,设计了一个FTC来稳定受执行器故障影响的闭环系统。控制律设计基于分区技术,保证了闭环的稳定性。仿真结果验证了该方法的有效性。
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引用次数: 1
Energy management based fuzzy-logic of a reverse osmosis desalination powered with hybrid system 基于模糊逻辑的混合动力反渗透海水淡化系统能量管理
Pub Date : 2021-12-20 DOI: 10.1109/scc53769.2021.9768374
A. Zgalmi, A. Ben Rhouma, H. Cherif, J. Belhadj
Reverse osmosis desalination systems powered by hybrid renewable source have attracted more and more interests due to the rapid economic growth which increase the human’s resources demand especially natural resources. This study aims to propose a real time energy management control strategy for achieving a stand-alone hybrid power reverse osmosis desalination system goal. The hybrid power desalination system comprises: a photovoltaic generator and a wind turbine as renewable sources coupled with a three motor-pumps and three tanks for water storage. These system components are modeled with a particularity of a single sizing parameter between the desalination motor-pump and the reverse osmosis process. The developed energy management strategy is based on fuzzy logic method. The proposed water/energy management strategy is able to satisfy the load consumption profile and to manage the generated power between the different subsystems depending on the variation of the wind and solar radiation and the state of the three tanks. A dynamic simulator with one-hour acquisition using real meteorological and water consumption data for one year of a southern Tunisia site is developed to treat the PV/Wind reverse osmosis desalination unit coupled with the energy management system based on fuzzy logic strategy. The proposed smart power energy management method led to encouraging results.
随着经济的快速发展,人类对资源尤其是自然资源的需求不断增加,以混合可再生能源为动力的反渗透海水淡化系统越来越受到人们的关注。本研究旨在提出一种实时能量管理控制策略,以实现单机混合动力反渗透海水淡化系统的目标。混合动力海水淡化系统包括:作为可再生能源的光伏发电机和风力涡轮机,以及三个电机泵和三个储水罐。这些系统部件在海水淡化电机泵和反渗透过程之间具有单一尺寸参数的特殊性。提出了基于模糊逻辑方法的能源管理策略。所提出的水/能源管理策略能够满足负荷消耗概况,并根据风和太阳辐射的变化以及三个储罐的状态管理不同子系统之间的发电。利用突尼斯南部某站点一年的真实气象和用水量数据,开发了一小时采集动态模拟器,用于处理光伏/风能反渗透海水淡化装置与基于模糊逻辑策略的能源管理系统。提出的智能电源能量管理方法取得了令人鼓舞的效果。
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引用次数: 1
期刊
2021 IEEE 2nd International Conference on Signal, Control and Communication (SCC)
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