检索结果-内蒙古大学图书馆

Extremum seeking control and gradient estimation based on the super-twisting algorithm

JOURNAL OF PROCESS CONTROL 2021年 105卷 223-235页

作者： Torres-Zuniga, Ixbalank Lopez-Caamal, Fernando Hernandez-Escoto, Hector Alcaraz-Gonzalez, Victor Univ Guanajuato Dept Elect Engn CA Telemat Carretera Salamanca Valle Santiago Km 3-5 1-8 Salamanca 36885 Mexico Univ Guanajuato Dept Chem Engn Guanajuato 36050 Mexico Univ Guadalajara Ctr Univ Ciencias Exactas & Ingn Blvd Marcelino Garcia Barragan 1421 Guadalajara 44430 Mexico

This article addresses the problem of extremum seeking of a continuous-time dynamical system with a single input and a single output. A super-twisting-based optimization algorithm is proposed to compute the input that leads to the extremum value of an unknown convex objective function. Our optimization algorithm requires the input-output gradient of the system's response at steady state, which we compute throughout a super-twisting-based differentiator. Feasibility of the proposed extremum seeking strategy is demonstrated by two simulation examples. The first one is an example of interest in academy. The second one is a novel biohydrogen production process. (C) 2021 Elsevier Ltd. All rights reserved.

关键词： Extremum seeking control Sliding modes super-twisting algorithm Differentiators Process control Microbial electrolysis cell

来源：评论

学校读者我要写书评

暂无评论

A sensorless control scheme based on fractional order super-twisting algorithm and improved FLL for PMSM

引用

ADVANCES IN MECHANICAL ENGINEERING 2024年第10期16卷

作者： Huangfu, Liqun Chen, Cen Zhang, Tao Huaiyin Inst Technol Meicheng Rd 1 Huaian 223003 Peoples R China

To further improve the accuracy of sensorless control at medium and high speeds for permanent magnet synchronous motor (PMSM) and expand its applicability, this paper proposes a new scheme that uses a sliding mode observer and a frequency-locked loop (FLL) for control. The combination of the super-twisting algorithm (STA) and fractional calculus algorithm (FCA) is applied to the observer, which improves the convergence speed and accuracy. In response to the limitations of phase-locked loops (PLLs), a second-order generalized integral frequency-locked loop (SOGI-FLL) is introduced into the control system to be compounded to form a novel control system with compensation, which filters the signal while achieving accurate tracking of rotor position information. Finally, a series of experiments were conducted to compare the performance of the proposed control scheme with conventional control schemes. The superiority and feasibility of the sensorless control scheme were verified through experimental results on a permanent magnet synchronous motor platform.

关键词： Sliding mode observer frequency-locked loop super-twisting algorithm sensorless control fractional calculus algorithm phase-locked loop

来源：评论

学校读者我要写书评

暂无评论

A New Sliding Mode Observer Design for Fault Estimation in a Class of Nonlinear Fractional-Order Systems Based on the super-twisting algorithm

引用

JOURNAL OF CONTROL AUTOMATION AND ELECTRICAL SYSTEMS 2021年第6期32卷 1531-1539页

作者： Mousavi, Seyed Mohammad Moein Ramezani, Amin Tarbiat Modares Univ Dept Elect & Comp Engn Tehran Iran

This paper is concerned with fault estimation in a class of nonlinear fractional-order systems using a new second-order sliding mode observer. Since the existing sliding mode observers are troubled with the chattering phenomenon, a new observer structure is proposed, and finite-time convergence of error dynamics is proved using fractional-order super-twisting algorithm (FSTA). Two numerical examples of chaotic fractional-order systems and comparison with a similar observer show the chattering reduction and justify the proposed observer's effectiveness.

关键词： Nonlinear fractional-order system Fault estimation Sliding mode observer super-twisting algorithm Chaotic fractional-order systems

来源：评论

学校读者我要写书评

暂无评论

A Minimum Operator Based Discrete-Time super-twisting-Like algorithm

引用

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS 2024年第1期71卷 286-290页

作者： Prasun, Parijat Pandey, Sunidhi Kamal, Shyam Ghosh, Sandip Xiong, Xiaogong Indian Inst Technol BHU Varanasi Dept Elect Engn Varanasi 221005 India Harbin Inst Technol Dept Mech & Automat Shenzhen 518055 Peoples R China

In this brief, a minimum operator (MO) based approach is proposed for discrete-time super-twisting-like algorithm which has different roots unlike its contemporaries, most of which are based on Euler-discretization (ED). The algorithm is proposed for both unperturbed and perturbed cases. The application of this algorithm is further explored for the super-twisting observer (STO) that yields the finite-time estimation of the system states. An illustrative example of a pendulum system with known as well as unknown input is considered for the state observation problem. Simulation results show the effectiveness of the proposed algorithm.

关键词： Discrete-time sliding mode control super-twisting algorithm minimum operator observer design

来源：评论

学校读者我要写书评

暂无评论

Time-varying sliding mode controller design with super-twisting algorithm for Synchronous control of Double-Containers for Overhead Cranes 40

Time-varying sliding mode controller design with Super-twist...

引用

40th Chinese Control Conference (CCC)

作者： Zhu, Xinlei Xu, Weimin You, Zhiteng Hu, Qiang Xu, Xianxian Shanghai Maritime Univ Minist Commun Key Lab Marine Technol & Control Engn Shanghai 201306 Peoples R China

ISBN: (纸本)9789881563804

In this study, a simple double-container position synchronization control algorithm based on a time-varying sliding mode surface (TVSMS) and adaptive super-twisting algorithm (ASTA) is developed for overhead crane system. The double-container overhead crane suffers from the perturbation of system parameters and external disturbances. Firstly, the potential load model of the double-container overhead crane in the interlocking mode is established. Then, a novel time-varying sliding surface is designed using cross-coupling error in order to ensure double-container position synchronization of overhead crane system. The design objective of the proposed controller is to ensure the synchronous movement of double-container while reaching the desired location. The time-varying sliding mode eliminates the reaching phase and ensures the global robustness of the overhead crane system. Furthermore, the adaptive super-twisting algorithm is used to weaken chattering and improve the performance of the controller. At the same time, the extended state observer (ESO) is used to estimate the mismatched disturbance of the overhead crane system. The Lyapunov stability theory is used to prove the stability of the controlled system. The simulation experiments illustrate the effectiveness of the designed algorithms.

关键词： synchronous control interlocking mode time-varying sliding mode extended state observer super-twisting algorithm

来源：评论

学校读者我要写书评

暂无评论

Position and attitude tracking of uncertain quadrotor unmanned aerial vehicles based on non-singular terminal super-twisting algorithm

引用

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART I-JOURNAL OF SYSTEMS AND CONTROL ENGINEERING 2020年第3期234卷 396-408页

作者： Alqaisi, Walid Kali, Yassine Ghommam, Jawhar Saad, Maarouf Nerguizian, Vahe Univ Quebec ETS Elect Engn Dept Montreal PQ H3C 1K3 Canada Sultan Qaboos Univ Dept Elect & Comp Engn Muscat Oman

This paper proposes an improved non-singular terminal super-twisting control for the problem of position and attitude tracking of quadrotor systems suffering from uncertainties and disturbances. The super-twisting algorithm is a second-order sliding mode known to be a very effective control used to provide high precision and less chattering for uncertain nonlinear electromechanical systems. The proposed method is based on a non-singular terminal sliding surface with new exponent that solves the problem of singularity. The design procedure and the stability analysis of the closed-loop system using Lyapunov theory are detailed for the considered system. Finally, the proposed control scheme is tested in simulations and by experiments on the parrot-rolling spider quadrotor. Moreover, a comparison is made with the standard super-twisting algorithm in the simulation part. The results obtained show adequate performance in trajectory tracking and chattering reduction.

关键词： Non-singular terminal sliding surface super-twisting algorithm unmanned aerial vehicle altitude and attitude tracking finite-time convergence

来源：评论

学校读者我要写书评

暂无评论

Strict Lyapunov Functions for the super-twisting Consensus algorithm 17

Strict Lyapunov Functions for the Super-Twisting Consensus A...

引用

17th International Workshop on Variable Structure Systems

作者： Pilloni, Alessandro Callia, Leonardo Pisano, Alessandro Usai, Elio Univ Cagliari Dept Elect & Elect Engn Cagliari Italy

ISBN: (纸本)9798350353693;9798350353686

The super-twisting algorithm is widely used in the design of controllers, observers, and differentiators. This paper investigates its application to achieve consensus among a team of peer agents characterized by first-order perturbed dynamics. Agents communicate through a directed, weight-balanced communication topology. The key contributions include employing the super-twisting algorithm to solve the finite-time robust consensus problem and developing a method for constructing a family of strict Lyapunov functions to analyze its robust stability. The analysis is based on the Lyapunov approach, and the necessary conditions for the stability of the closed-loop system are derived. Simulations supporting the theoretical analysis are also provided.

关键词： Consensus Lyapunov function Second order sliding modes super-twisting algorithm Discontinuous systems

来源：评论

学校读者我要写书评

暂无评论

Quantized synchronization of memristive neural networks with time-varying delays via super-twisting algorithm

引用

NEUROCOMPUTING 2020年第0期380卷 133-140页

作者： Sun, Bo Wen, Shiping Wang, Shengbo Huang, Tingwen Chen, Yiran Li, Peng Univ Elect Sci & Technol China Sch Comp Sci & Engn Chengdu 611731 Peoples R China Huazhong Univ Sci & Technol Sch Automat & Artificial Intelligence Wuhan 430074 Peoples R China Texas A&M Univ Qatar Sci Program Doha 23874 Qatar Duke Univ Dept Elect & Comp Engn Durham NC 27708 USA Univ Calif Santa Barbara Dept Elect & Comp Engn Santa Barbara CA 93106 USA

In this paper, we investigate quantized synchronization control problem of memristive neural networks (MNNs) with time-varying delays via super-twisting algorithm. A feedback controller is introduced with quantized method. To enormously reduce the computational complexity of the controller under super-twisting algorithm, two quantized control schemes are proposed with uniform quantizer and logarithmic quantization. We obtain some sufficient conditions of specific control plans to guarantee that the driving MNNs can synchronize with the response MNNs. A neoteric Lyapunov functional is designed to analyze the synchronization problem. Finally, in this paper ending, some illustrative examples are given in support of our results. (C) 2019 Elsevier B.V. All rights reserved.

关键词： Memristive neural network super-twisting algorithm Quantized control scheme Synchronization Time-varying delay

来源：评论

学校读者我要写书评

暂无评论

Direct-Driven PMSG Wind Turbines: Adaptive super twisting algorithm Control Approach 12

Direct-Driven PMSG Wind Turbines: Adaptive Super Twisting Al...

引用

12th IFAC Symposium on Control of Power and Energy Systems (CPES)

作者： Benzaouia, M. Benzaouia, S. Rabhi, A. Hajji, B. Elgharib, A. O. Mohamed First Univ Natl Sch Appl Sci Renewable Energy Embedded Syst & Data Proc Lab Oujda Morocco Capgemini Engn Direct Res & Innovat F-31700 Blagnac France Univ Picardie Jules Verne Lab Modelisat Informat & Syst MIS 33 Rue St Leu F-80039 Amiens France AASTMT Basic & Appl Sci Dept Giza Egypt

This paper deals with the development of a robust nonlinear control strategy for direct-driven Permanent Magnet Synchronous Generator (PMSG) wind turbines. First-Order Sliding Mode Controllers (FOSMC) are commonly used in such systems to regulate generator rotational speed and optimize power extraction;however, they encounter significant drawbacks, notably the undesirable chattering effect and the necessity for measuring additional system states, leading to increased complexity and implementation costs. In addressing these issues, an effective control technique based on an Adaptive super-twisting algorithm (ASTA) has been proposed. This algorithm not only mitigates the chattering effect but also offers a more cost-effective implementation by incorporating online gains adaptation to accommodate the unpredictable nature of wind speeds. The proposed control technique has been evaluated in MATLAB/Simulink through model-in-the-loop simulations;demonstrating superior performance compared to classical FOSMC and STA controllers under various scenarios. Copyright (c) 2024 The Authors.

关键词： PMSG Wind Turbine MPPT Sliding Mode Control super-twisting algorithm Field Oriented Control (FOC) WECS

来源：评论

学校读者我要写书评

暂无评论

super-twisting algorithm-based integral sliding mode control with composite nonlinear feedback control for magnetic levitation system

引用

INTERNATIONAL JOURNAL OF AUTOMATION AND CONTROL 2019年第6期13卷 717-734页

作者： Pati, Avadh Negi, Richa Natl Inst Technol Dept Elect Engn Silchar India Motilal Nehru Natl Inst Technol Dept Elect Engn Allahabad Uttar Pradesh India

The paper aims to discuss the issues of actuator saturation and external disturbance in the magnetic levitation (maglev) system. The proposed technique is composed of composite nonlinear feedback (CNF) and super-twisting algorithm (STA)-based integral sliding mode (ISM) control to tackle the problem of actuator saturation and external disturbances simultaneously. The composite nonlinear feedback scheme comprises of linear feedback law which provides stability and fast response whereas the nonlinear feedback law takes care of input saturation and reduces the overshoot. The super-twisting algorithm (STA)-based integral sliding mode (ISM) controller is designed for disturbance rejection. A super-twisting algorithm-based approach is applied on ISM scheme to eliminate the chattering effect and make it continuous in nature for its direct implementation to the physical maglev system. The designed scheme is successfully tested on real-time feedback instruments model of the maglev system.

关键词： maglev system composite nonlinear feedback CNF super-twisting algorithm STA integral sliding mode ISM actuator saturation

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：