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2018 7th International Conference on Systems and Control (ICSC)最新文献

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Fault-Tolerant Tracking Control for a Biological Process: Multiple Lyapunov Functions Approach 生物过程的容错跟踪控制:多重Lyapunov函数方法
Pub Date : 2018-10-01 DOI: 10.1109/ICOSC.2018.8587629
Mohamed Abyad, A. Karama, Abdelmounaim Khallouq
This paper addresses trajectory tracking and active Fault Tolerant Control (FTC) of a nonlinear biological process affected by actuators faults. The nonlinear biological process transformed to a fuzzy Takagi-Sugeno (T-S) model, then a nominal control based on the optimal Linear Quadratic Integral (LQI) is synthesized for ensuring the trajectory tracking. To build the active fault tolerant control, a Proportional Integral Observer (PIO) is proposed to estimate simultaneously the actuators faults and states, the estimated faults used to reconfigure the nominal control. the new conditions of convergence to increase the fault compensation speed are proposed, which based on multiple Lyapunov functions. The proposed method is applied to the bacterial growth process and their efficiency is demonstrated via simulations.
研究了受致动器故障影响的非线性生物过程的轨迹跟踪和主动容错控制。将非线性生物过程转化为模糊的Takagi-Sugeno (T-S)模型,然后合成基于最优线性二次积分(LQI)的标称控制以保证轨迹跟踪。为了建立主动容错控制,提出了一个比例积分观测器(PIO)来同时估计执行器的故障和状态,估计的故障用于重新配置标称控制。提出了基于多重李雅普诺夫函数的提高故障补偿速度的新收敛条件。将该方法应用于细菌生长过程,并通过仿真验证了其有效性。
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引用次数: 2
Extended State Observer Based Hierarchical Control for quadrotor UAV 基于扩展状态观测器的四旋翼无人机层次控制
Pub Date : 2018-10-01 DOI: 10.1109/ICOSC.2018.8587636
M. Mokhtari, Mouad Kahouadji, A. Choukchou-Braham, B. Cherki
This paper presents an original control strategy based on the Extended State Observer -ESO- position and orientation control problem of a small rotorcraft Unmanned Aerial Vehicle subjected to unknown aerodynamic efforts. A hierarchical control approach is applied to separate the flight control problem into translational and rotational controllers based on the time-scale property of each subsystem. An Extended State Observer -ESO- is used to estimate the state and the unknown aerodynamic disturbances. Closed loop stability of the system is established. Numerical simulations are carried out and results are presented to demonstrate efficiency of the proposed control strategy.
提出了一种基于扩展状态观测器的新颖控制策略,解决了未知气动作用下小型旋翼无人机的位置和方向控制问题。基于各子系统的时间尺度特性,采用层次控制方法将飞行控制问题分解为平移控制器和旋转控制器。利用扩展状态观测器eso来估计系统的状态和未知的气动扰动。建立了系统的闭环稳定性。数值仿真结果验证了所提控制策略的有效性。
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引用次数: 0
Bond Graph based Power Consumption Estimation of a Non-holonomic Wheeled Mobile Robot with Multiple Driving Modes 基于键合图的非完整轮式移动机器人多驱动模式功耗估计
Pub Date : 2018-10-01 DOI: 10.1109/ICOSC.2018.8587781
Pushpendra Kumar, Ismail Bensekrane, Manarshhjot Singh, R. Merzouki
This paper presents a method for estimation of power consumption of a non-holonomic Wheeled Mobile Robot (WMR) using a graphical modeling approach called bond graph. The considered WMR is an over-actuated four wheeled robot and can have different driving modes based on its steering scheme. Therefore, the main contribution of this paper is to develop a model for the power consumption estimation considering three driving modes of the robot namely, skid, front, and dual steering. The model is validated through simulation and experiment.
本文提出了一种基于键合图的非完整轮式移动机器人(WMR)功耗估计方法。所考虑的WMR是一个过度驱动的四轮机器人,可以根据其转向方案具有不同的驾驶模式。因此,本文的主要贡献是建立了考虑机器人滑移、前转向和双转向三种驱动模式的功耗估算模型。通过仿真和实验对模型进行了验证。
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引用次数: 1
Architecture for Embedded Supervisory System of Distributed Renewable Energy Sources 分布式可再生能源嵌入式监控系统体系结构
Pub Date : 2018-10-01 DOI: 10.1109/ICOSC.2018.8587771
Cristian Miron, S. Olteanu, N. Christov, A. Aitouche
The purpose of the paper is to present an architecture of an embedded solution for system supervision of distributed renewable power systems. This work is a first step towards an IoT solution, appropriate for small power, but spread renewable energy solutions as in smart residences. The OPC protocol is chosen as the most suitable solution for long distance communication, whereas serial communication is employed for short distances. The OPC server/client platform is microprocessor based, while the generators are controlled through microcontrollers that interact through serial communication with local OPC nodes. The microcontrollers can provide the supervisor with different parameters, such as voltage, current, control value, but can also receive parameters, such as the set point of the generated power, solar irradiation, temperature. The multiplatform capabilities of the python language are considered. A validation is realized via Arduino boards as local controllers for the generators and Raspberry Pi boards as OPC server/clients and a global supervisor is developed in Matlab. The solution is interesting as it gives a strong modularity and easy access to portable solutions on the ground.
本文的目的是提出一种分布式可再生能源系统监控的嵌入式解决方案架构。这项工作是迈向物联网解决方案的第一步,适用于小功率,但在智能住宅中推广可再生能源解决方案。OPC协议被选为长距离通信的最合适的解决方案,而串行通信用于短距离通信。OPC服务器/客户端平台是基于微处理器的,而生成器通过微控制器进行控制,微控制器通过串行通信与本地OPC节点进行交互。单片机可以为上位机提供不同的参数,如电压、电流、控制值等,也可以接收参数,如发电量设定值、太阳辐照度、温度等。考虑了python语言的多平台功能。通过Arduino板作为生成器的本地控制器和Raspberry Pi板作为OPC服务器/客户端实现验证,并在Matlab中开发了全局监控器。该解决方案很有趣,因为它提供了强大的模块化,并且易于在地面上使用便携式解决方案。
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引用次数: 2
MRAS Sensorless Speed Control of an Induction Motor Drive based on Fuzzy Sliding Mode Control 基于模糊滑模控制的感应电机无传感器速度控制
Pub Date : 2018-10-01 DOI: 10.1109/ICOSC.2018.8587844
D. Fereka, M. Zerikat, A. Belaidi
This paper is focussed on a MRAS sensorless speed control based on hybrid fuzzy-sliding mode control strategy associated with the field-oriented control of induction motor drives. In order to improve the performance of the speed sensorless vector controlled induction motor drives, an hybrid is included. The analysis, design of the MRAS sensorless control based on fuzzy-sliding mode controller for indirect vector control of induction motor are analyzed and presented. The model is carried out using Matlab/Simulink software. The main advantages of the proposed chattering-free speed controller are robustness to parameter variations and load changes. The results are shown to verify the effectiveness of the proposed speed controller and its advantages are shown in comparison with the conventional SMC and Fuzzy Sliding Mode Controller FSMC.
研究了一种基于模糊-滑模混合控制策略的MRAS无传感器速度控制与感应电机驱动的磁场定向控制。为了提高无速度传感器矢量控制感应电机的性能,采用了混合动力驱动。对异步电动机间接矢量控制中基于模糊滑模控制器的MRAS无传感器控制进行了分析和设计。利用Matlab/Simulink软件进行建模。该无抖振速度控制器的主要优点是对参数变化和负载变化具有鲁棒性。实验结果验证了所提速度控制器的有效性,并与传统的滑模控制器和模糊滑模控制器FSMC进行了比较。
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引用次数: 7
Design of Backstepping-Sliding Mode Controller for a Bidirectional Grid Connected DC/AC Converter 双向并网DC/AC变换器的反步滑模控制器设计
Pub Date : 2018-10-01 DOI: 10.1109/ICOSC.2018.8587832
M. Bahloul, J. Gaubert, D. Mehdi, S. Khadem
In this paper, design of a nonlinear controller for grid connected bidirectional converter is presented. A backstepping sliding mode (BS-SM) approach is used, and two control algorithms are proposed. The first one uses a classical design approach. However, the second BS-SM controller design relies on an accurate Lyapunov stability analysis. Simulation studies are presented while considering in the first step, the nominal parameters of the system, and in the second step, variations or uncertainties that can impact the inductance of the RL filter. The analysis outcome shows the superiority and the robustness of the second proposed BS-SM controller to deal with transients and to guarantee a better performance of the proposed controller under different operating conditions.
本文介绍了一种并网双向变换器的非线性控制器的设计。采用了一种反步滑模(BS-SM)方法,并提出了两种控制算法。第一个使用了经典的设计方法。然而,第二个BS-SM控制器设计依赖于精确的李雅普诺夫稳定性分析。在第一步中考虑系统的标称参数,在第二步中考虑可能影响RL滤波器电感的变化或不确定性,并进行了仿真研究。分析结果表明,所提出的第二种BS-SM控制器在处理瞬态方面具有优越性和鲁棒性,并保证了所提出的控制器在不同工况下具有较好的性能。
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引用次数: 2
Unknown input observer design for faults estimation using linear parameter varying model. Application to wind turbine systems 基于线性参数变模型的未知输入观测器故障估计设计。应用于风力涡轮机系统
Pub Date : 2018-10-01 DOI: 10.1109/ICOSC.2018.8587778
Shanzhi Li, Haoping Wang, A. Aitouche, N. Christov
This paper proposes a sensor and actuator estimation algorithm based on linear parameter varying (LPV) model. Considering sensor noise and disturbance, an unknown input observer (UIO) is developed. In this scheme, by building an augmented system with a filter, sensor fault and noise of the original system become into a part of actuator fault and disturbance. According to this augmented system, an UIO and fault estimation method have been designed. Then, by solving the linear matrix equalities (LMEs) and the linear matrix inequalities (LMIs), the parameters of the UIO are obtained. In addition, we analyze the convergence of the observer. In order to verify the proposed method, a wind turbine system with torque actuator fault and pitch angle sensor fault has been tested. From simulation results, it presents an efficient performance on both state and fault estimation.
提出了一种基于线性参数变化(LPV)模型的传感器和执行器估计算法。考虑传感器噪声和干扰,设计了一种未知输入观测器。在该方案中,通过建立一个带滤波器的增强系统,将原系统的传感器故障和噪声变为执行器故障和干扰的一部分。在此基础上,设计了UIO和故障估计方法。然后,通过求解线性矩阵等式(LMEs)和线性矩阵不等式(lmi),得到了UIO的参数。此外,我们还分析了观测器的收敛性。为了验证所提方法的有效性,对一个存在转矩执行器故障和俯仰角传感器故障的风力发电机组系统进行了测试。仿真结果表明,该方法具有良好的状态估计和故障估计性能。
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引用次数: 1
A New Maximum Power Point Tracking Algorithm For Partial Shaded Photovoltaic Systems 部分遮阳光伏系统最大功率点跟踪新算法
Pub Date : 2018-10-01 DOI: 10.1109/ICOSC.2018.8587773
Tawfik Radjai, J. Gaubert, L. Rahmani
In this paper, a new maximum power point tracking MPPT algorithm is proposed to track the global maximum point (GMPP) under partial shading conditions (PSC). The proposed algorithm can track the real GMPP under any PSC patterns and under any weather conditions with improving the tracking speed and reducing the PV output power oscillations at the steady state. The proposed algorithm is simple and easy to implement, because additional sensors or electrical switches are not required to identify the GMPP. The idea of the proposed method is based mainly on the scanning of the PV curve with a variable step of the duty cycle from zero to one. The scan step will be small when the operating point is near the MPP, otherwise, the scan step will be large to skip the regions that do not need to be scanned on the PV curve. Therefore, the scan time will be reduced and the MPPs are accurately detected. Furthermore, the algorithm stores only one MPP during the scanning process, stores only the data position of the greatest maximum power of the PV curve in each sample time Ts. Therefore, the execution of the embedded program in the calculator is optimized. In order to maintain the operating point at the GMPP after the scanning is finished a simple proposed sub-program will be used. In this work, a controlled Cuk DC–DC converter was used and connected to a Kyocera KC50T PV panel to verify the performance of the proposed method. Matlab/Simulink™ was used for the simulation studies.
本文提出了一种新的最大功率点跟踪算法(MPPT),用于局部遮阳条件下的全局最大功率点跟踪。该算法可以在任意模式和任意天气条件下跟踪实际GMPP,提高了跟踪速度,减小了光伏稳态输出功率的振荡。该算法简单且易于实现,因为不需要额外的传感器或电气开关来识别GMPP。该方法的思想主要基于对占空比从0到1的变步长PV曲线的扫描。当工作点靠近MPP时,扫描步长较小,否则扫描步长较大,从而跳过PV曲线上不需要扫描的区域。因此,扫描时间将缩短,并准确地检测到mpp。此外,该算法在扫描过程中仅存储一个MPP,仅存储PV曲线在每个采样时间Ts中最大功率的数据位置。因此,优化了计算器中嵌入式程序的执行。为了在扫描完成后保持GMPP的工作点,将使用一个简单的提议子程序。在这项工作中,使用了一个受控的Cuk DC-DC转换器,并将其连接到京瓷KC50T光伏面板上,以验证所提出方法的性能。采用Matlab/Simulink™进行仿真研究。
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引用次数: 2
Advanced Disturbance Rejection Control of Smart Flexible Structures 智能柔性结构的高级抗扰控制
Pub Date : 2018-10-01 DOI: 10.1109/ICOSC.2018.8587799
T. Nestorović, A. Oveisi
Controller design, as an integral step in the overall design of smart structures, plays a crucial role in active vibration suppression. Whereas well established control techniques like optimal LQG or PID controllers may perform well under assumption of the linear structural behavior, which can be described with sufficient accuracy by an LTI model, control task becomes much more complex in the presence of nonlinearities and uncertainties. In this paper we propose a feedback controller based on the recurrent wavelet neural network (RWNN) which is designed and trained to track the states of an ideal state-feedback controller, designed for the underlying linear model of the plant. In addition, adaptive neural network observer is designed to estimate the unnknown model dynamics associated with the nominal LTI model of the plant. Real time implementation of the proposed controller is realized on a Hardware-in-the-Loop setup with a flexible clamped-free beam and dSPACE system and tested for disturbance rejection tasks through a worst-case study in the presence of disturbances which cause resonant states.
控制器设计作为智能结构整体设计中不可或缺的一步,在主动抑制振动中起着至关重要的作用。虽然完善的控制技术,如最优LQG或PID控制器可以在线性结构行为的假设下表现良好,线性结构行为可以通过LTI模型以足够的精度描述,但在非线性和不确定性的存在下,控制任务变得更加复杂。本文提出了一种基于循环小波神经网络(RWNN)的反馈控制器,该控制器被设计和训练用于跟踪针对对象底层线性模型设计的理想状态反馈控制器的状态。此外,设计了自适应神经网络观测器来估计与植物标称LTI模型相关的未知模型动力学。所提出的控制器的实时实现是在一个硬件在环装置上实现的,该装置具有灵活的无箝位梁和dSPACE系统,并通过在存在引起谐振状态的干扰的最坏情况下的研究来测试干扰抑制任务。
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引用次数: 1
ℋ∞ Sliding Window Observer Design for Lipschitz Discrete-Time Systems Lipschitz离散系统的h∞滑动窗口观测器设计
Pub Date : 2018-10-01 DOI: 10.1109/ICOSC.2018.8587622
N. Gasmi, M. Boutayeb, A. Thabet, M. Aoun
This paper focuses on the ℋ∞ observer design for Lipschitz discrete-time nonlinear systems. The main idea consists in using previous measurements in a Luenberger observer through a sliding window to obtain less restrictive constraint. Reformulations of both Lipschitz property and Young’s relation are used to offer greater degree of freedom to the obtained constraint. The presented result is in the form of BMI (Bilinear Matrix Inequality) which is transformed into LMI (Linear Matrix Inequality) through an interesting approach. The resulting constraint can be easily achieved with standard software algorithms. Then, to prove the superiority of the proposed design methodology, a comparison with the classical case is presented. Numerical examples are given to illustrate the effectiveness and the high performances of the proposed filter.
研究了Lipschitz离散非线性系统的h∞观测器设计。主要思想是通过滑动窗口在Luenberger观测器中使用先前的测量值来获得较少的限制性约束。利普希茨性质和杨氏关系的重新表述为得到的约束提供了更大的自由度。通过一种有趣的方法,将双线性矩阵不等式(BMI)转化为线性矩阵不等式(LMI)。由此产生的约束可以很容易地通过标准软件算法实现。然后,为了证明所提出的设计方法的优越性,与经典案例进行了比较。数值算例说明了该滤波器的有效性和良好的性能。
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引用次数: 0
期刊
2018 7th International Conference on Systems and Control (ICSC)
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