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Robust Admissibility and Stabilization of Uncertain Singular Fractional-Order Linear Time-Invariant Systems 预览
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作者 Saliha Marir Mohammed Chadli 《自动化学报:英文版》 CSCD 2019年第3期685-692,共8页
This paper addresses the robust admissibility problem in singular fractional-order continuous time systems. It is based on new admissibility conditions of singular fractional-order systems expressed in a set of strict... This paper addresses the robust admissibility problem in singular fractional-order continuous time systems. It is based on new admissibility conditions of singular fractional-order systems expressed in a set of strict linear matrix inequalities (LMIs). Then, a static output feedback controller is designed for the uncertain closed-loop system to be admissible. Numerical examples are given to illustrate the proposed methods. 展开更多
关键词 CONTROL FRACTIONAL-ORDER SYSTEMS linear matrix inequalities (LMIs) output feedback CONTROL robust ADMISSIBILITY SINGULAR SYSTEMS UNCERTAIN SYSTEMS
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Teaching Systems Theory/Thinking/Behavior: Systemic Behavior Instead of One-Sidedness: Making Bridges Among Specialists 预览
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作者 Matjaz MULEJ Zdenka zENKO Tadeja Jere JAKULIN 《系统科学与信息学报:英文版》 CSCD 2019年第4期390-398,共9页
In the current real life, systems theory is an abstract background of systems thinking,which is a part of systemic behavior. The systemic behavior is the alternative to the currently prevailing one-sidedness that puts... In the current real life, systems theory is an abstract background of systems thinking,which is a part of systemic behavior. The systemic behavior is the alternative to the currently prevailing one-sidedness that puts all of humankind in danger of self-destruction due to the crucial over-sights(all the way to world wars) that unavoidably result from the current over-specialization(along with crucial, but partial insights), if the specialists fail to practice creative interdisciplinary cooperation.This contribution is a next phase of research after the contributions by Matja? Mulej, Zdenka ?enko and Viktor ?akelj(2017) and by Matja? Mulej, et al.(2013). Although the abstract background and thinking that the systemic behavior applies, are very necessary, theory and thinking are no longer enough for systems science to be a relevant science and practice helping humankind find the way out from the current blind alley and survive as a healthy civilization with a healthy social and natural environment. The suggestion in this contribution therefore reads: Let us systems and cybernetics scientists make/enable the transition to systemic behavior, which applies all the many theories, which are components in the background of systemic behavior in practice, next to each other and/or in synergy. Analysis, i.e., studying per isolated parts is too overlooking and one-sided to be enough. So is teaching on a single one out of several systems theories. Reality is too complex. Teaching is a part of this necessary effort, which must lead to a global peace and survival of humankind of today instead of the current hating the human descendants. 展开更多
关键词 SYSTEMS theory SYSTEMIC THINKING SYSTEMIC BEHAVIOR SYSTEMS science humankind survival of human civilization social ENVIRONMENT natural ENVIRONMENT
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Predicting User Satisfaction of Non-volitional Enterprise Systems: An Example From Telecomunications 预览
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作者 Paul A. J. Mason Akaret Tangsuwan 《中国经济评论:英文版》 2019年第1期1-13,共13页
The rapid pace of technological change has seen information and communication technologies become the digital backbone of developed nations’ economies and a pre-requisite for global trade. Some enterprise systems are... The rapid pace of technological change has seen information and communication technologies become the digital backbone of developed nations’ economies and a pre-requisite for global trade. Some enterprise systems are however more than mere facilitators, they provide the bedrock without which organizations could not function;we term these mandatory systems “non-volitional”(NVS). With hyper-growth in demand for connectivity, telecommunications are typical of sectors where NVS shape the fiercely competitive landscape. Among them, Billing & Revenue Management Systems (BRMS) are a form of credit, providers deliver a service and subscribers later pay for that service. As such, they are “business critical”, meaning failures may affect an organization’s ability to conduct its core business. Failures also impact user satisfaction, a key measure of information systems success. However, relatively few studies empirically test this notion;fewer still evaluate it at organizational (rather than individual) level, while there is a dearth of literature investigating non-volitional systems and, to the best of our knowledge, none whatsoever consider ways of predicting user satisfaction for BRMS. According to a renowned and widely cited conceptual model, user satisfaction is influenced by information, system, and service quality respectively. To test this theory for telecoms BRMS, we applied structural equation modelling to investigate which of these dimensions has the most effect. The results indicate that information quality, system quality, service quality, and user satisfaction are all valid measures of BRMS success. Hypothesized relationships between the four success dimensions were significantly substantiated. The study also identified five measures of information quality, four measures of system quality, four measures of service quality, and four measures of user satisfaction. Once the proposed model had been successfully validated, we tested the level of significance among user satisfaction and the three quality 展开更多
关键词 BILLING & Revenue Management SYSTEMS success non-volitional SYSTEMS ORGANIZATIONAL impact user satisfaction measures information QUALITY system QUALITY service QUALITY
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Thixotropy of Systems with Shear Thinning and Plastic Flow Behavior 预览
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作者 Dimiter Hadjistamov 《材料科学与工程:中英文B版》 2019年第2期56-65,共10页
The definition of the thixotropy is a decrease in viscosity with time in shear and a subsequent recovery of viscosity after the shear deformation is removed.We used therefore start-up experiments with constant shear r... The definition of the thixotropy is a decrease in viscosity with time in shear and a subsequent recovery of viscosity after the shear deformation is removed.We used therefore start-up experiments with constant shear rates and can speak consequently of shear stress instead of viscosity.The shear stress increases sharply at the beginning of the stress growth experiment,passes an overshoot and begins to decrease up to the steady state shear stress.We can assume that a stress growth curve with an overshoot points out to thixotropic behavior.After the steady state shear stress is reached,the shear deformation is stopped,and the stress relaxation begins.It is to be expected that the shear stress will recover after the stress relaxation.Systems with shear thinning and plastic flow behavior were examined.The thixotropy is discussed in relation to the flow behavior.Stress growth experiments were performed with shear rates from the first Newtonian region and from the shear thinning region of the systems with shear thinning flow behavior.Stress start-up experiments were carrying out with shear rates from the first and second yield stress regions and from the transition section of a system with plastic flow behavior. 展开更多
关键词 THIXOTROPY rheopexy SYSTEMS with SHEAR THINNING FLOW BEHAVIOR SYSTEMS with plastic FLOW BEHAVIOR time related FLOW behaviour.
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Quantized control for the class of feedforward nonlinear systems
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作者 Hanfeng LI Qingrong LIU +1 位作者 Xianfu ZHANG Xiandong CHEN 《中国科学:信息科学(英文版)》 SCIE EI CSCD 2019年第8期203-205,共3页
Dear editor, In certain practical systems, quantized control can effectively solve stabilization problems in intelligent transportation systems and digital systems [1]. Constant progress has been made on linear quanti... Dear editor, In certain practical systems, quantized control can effectively solve stabilization problems in intelligent transportation systems and digital systems [1]. Constant progress has been made on linear quantization systems. The problems of input quantization and output quantization were studied in [2] for the class of linear systems using a logarithmic quantizer, and the problem of quadratic stabilization was addressed by a proposed condition. On the contrary, research on nonlinear quantization systems is very significant and certain researches for nonlinear quantization systems are available [3,4]. 展开更多
关键词 nonlinear SYSTEMS PRACTICAL SYSTEMS STABILIZATION PROBLEMS
Sociability and pair-bonding in gerbils: a comparative experimental study
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作者 Andrey V. TCHABOVSKY Ludmila E. SAVINETSKAYA +4 位作者 Natalia L. OVCHINNIKOVA Alexandra SAFONOVA Olga N. ILCHENKO Svetlana R. SAPOZHNIKOVA Nina A. VASILIEVA 《动物学报:英文版》 SCIE CAS CSCD 2019年第4期363-373,共11页
In a study of gerbils with contrasting social and mating systems (group-living monogamous Mongolian gerbil Meriones unguiculatus, solitary nonterritorial promiscuous midday jird M. meridianus, and solitary territorial... In a study of gerbils with contrasting social and mating systems (group-living monogamous Mongolian gerbil Meriones unguiculatus, solitary nonterritorial promiscuous midday jird M. meridianus, and solitary territorial promiscuous pale gerbil Gerbillus perpallidus), we employed part ner pref ere nee tests (PPTs) to assess among-species variation in sociability and pair-bonding patterns and tested whether the nature of contact between individuals: direct contact (DC) versus nondirect contact (NDC) affected our results. We measured male pref ere nces as the time: 1) spe nt alone, 2) with familiar (partner), and 3) unfamiliar (stranger) female in the 3-chambered apparatus. Gerbil species differed strongly in sociability and male partner preferences. The time spent alone was a reliable indicator of species sociability indepe ndent of the nature of con tact, whereas the pattern and level of betwee n-species differe nces in male partner preferences depended on con tact type: DC PPTs, un like NDC-tests, discriminated well betwee n monogamous and promiscuous species. In the DC-tests, stranger-directed aggression and stranger avoidanee were observed both in the highly social monogamous M. unguiculatus and the solitary territorial promiscuous G. perpallidus, but not in the non territorial promiscuous M. meridianus. In M. unguiculatus, stranger avoidanee in the DC-tests increased the time spent with the partner, thus providing evidence of a partner preference that was not found in the NDC-tests, whereas in G. perpallidus, stran ger avoidance in creased the time spe nt alone. This first comparative experimental study of partner prefere nces in gerbils provides new in sights into the in terspecific variation in gerbil sociality and mating systems and sheds light on behavioral mechanisms un derlyi ng social fidelity and pair-b on ding. 展开更多
关键词 GERBILS mating SYSTEMS PARTNER preference test PARTNER fidelity social SYSTEMS stranger-directed aggression
Stable Model Order Reduction Method for Fractional-Order Systems Based on Unsymmetric Lanczos Algorithm 预览
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作者 Zhe Gao 《自动化学报:英文版》 CSCD 2019年第2期485-492,共8页
This study explores a stable model order reduction method for fractional-order systems. Using the unsymmetric Lanczos algorithm, the reduced order system with a certain number of matched moments is generated. To obtai... This study explores a stable model order reduction method for fractional-order systems. Using the unsymmetric Lanczos algorithm, the reduced order system with a certain number of matched moments is generated. To obtain a stable reduced order system, the stable model order reduction procedure is discussed. By the revised operation on the tridiagonal matrix produced by the unsymmetric Lanczos algorithm, we propose a reduced order modeling method for a fractional-order system to achieve a satisfactory fitting effect with the original system by the matched moments in the frequency domain. Besides, the bound function of the order reduction error is offered. Two numerical examples are presented to illustrate the effectiveness of the proposed method. 展开更多
关键词 FRACTIONAL-ORDER SYSTEMS order REDUCTION STABLE REDUCED order SYSTEMS unsymmetric LANCZOS algorithm
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Energy Guarantee Scheme for Real-time Systems with Energy Harvesting Constraints
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作者 Hussein El Ghor Maryline Chetto 《国际自动化与计算杂志:英文版》 EI CSCD 2019年第3期354-368,共15页
The growth of environmental energy harvesting has been explosive in wireless computing systems especially when replacing or recharging batteries manually is impracticable.This work investigates the scheduling of perio... The growth of environmental energy harvesting has been explosive in wireless computing systems especially when replacing or recharging batteries manually is impracticable.This work investigates the scheduling of periodic weekly hard real-time tasks under energy constraints.Based on this motivation,we proposed a real-time scheduling algorithm,namely energy guarantee dynamic voltage and frequency scaling(EG-DVFS),that utilizes the earliest deadline-harvesting(ED-H)scheduling algorithm combined with dynamic voltage and frequency scaling.This one is qualified as real-time since tasks must satisfy their timing constraints.We assume that the preemptable tasks receive dynamic priorities according to the earliest deadline first(EDF)rule.EG-DVFS adjusts the processor's behavior by characterizing the properties of the energy source module,capacity of the stored energy as well as the harvested energy in a future duration.Specifically,tasks are executed at full processor speed if the amount of energy in the battery is enough to finish its execution.Otherwise,the processor slows down task execution to the lowest possible processor speed while still guaranteeing to meet all the timing constraints.EG-DVFS mainly depends on the on-line computation of the slack time and the slack energy with dynamic voltage and frequency selection in order to achieve an improved system performance.Experimental results show that EG-DVFS can achieve capacity savings up of up to 33%when compared to ED-H. 展开更多
关键词 Real-time SYSTEMS energy HARVESTING embedded SYSTEMS power management dynamic VOLTAGE and frequency selection(DVFS) ED-H SCHEDULER
Preface
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《计算机科学技术学报:英文版》 SCIE EI CSCD 2019年第5期939-941,共3页
As a continuation of last four years’ special sections on software systems, this special section encourages and promotes research to address challenges from the perspective of software systems. The goal of this speci... As a continuation of last four years’ special sections on software systems, this special section encourages and promotes research to address challenges from the perspective of software systems. The goal of this special section is to present state-of-the-art and high-quality original research in the area of software systems. Different from previous special sections, this special section includes two different major themes: 1) Internetware and Beyond;2) Trustworthy Computing Systems and Networks. 展开更多
关键词 SOFTWARE SYSTEMS TRUSTWORTHY COMPUTING SYSTEMS
Recent Advances in the Modelling and Analysis of Opinion Dynamics on Influence Net works
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作者 Brian D. O. Anderson Mengbin Ye 《国际自动化与计算杂志:英文版》 EI CSCD 2019年第2期129-149,共21页
Abs tract: A fundamental aspect of society is the exchange and discussion of opinions bet ween individuals, occurring in situations as varied as company boardrooms, eleme nt ary school classrooms and online social med... Abs tract: A fundamental aspect of society is the exchange and discussion of opinions bet ween individuals, occurring in situations as varied as company boardrooms, eleme nt ary school classrooms and online social media. After a very brief introduction to the established results of the most fundamental opinion dynamics models, which seek to mathematically capture observed social phenomena, a brief discussion follows on several recent themes pursued by the authors building on the fundamental ideas. In the first theme, we study the way an individuaFs self-confidence can develop through contributing to discussions on a sequence of topics, reaching a consensus in each case, where the consensus value to some degree reflects the contribution of that individual to the conclusion. During this process, the individuals in the network and the way they interact can change. The second theme introduces a novel discrete-time model of opinion dynamics to study how discrepancies between an individual's expressed and private opinions can arise due to stubbornness and a pressure to conform to a social norm. It is also shown that a few extremists can create "pluralistic ignorance^^, where people believe there is majority support for a position but in fact the position is privately rejected by the majority. Last, we consider a group of individuals discussing a collection of logically related topics. In particular, we identify that for topics whose logical interdependencies take on a cascade structure, disagreement in opinions can occur if individuals have competing and/or heterogeneous views on how the topics are related, i.e., the logical interdependence structure varies between individuals. 展开更多
关键词 OPINION dynamics social NETWORKS influence NETWORKS AGENT-BASED models MULTI-AGENT SYSTEMS NETWORKED SYSTEMS
Extraction of Behavioural Requirements for Simulation-based Performance Evaluation of Manufacturing Systems
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作者 Junpil Kim Hyunbo Cho 《系统科学与系统工程学报:英文版》 SCIE EI CSCD 2019年第5期555-579,共25页
A simulation model enables manufacturers to accurately evaluate the performance of their manufacturing systems.A vital input to build simulation models of manufacturing systems is the system behaviour,which is modelle... A simulation model enables manufacturers to accurately evaluate the performance of their manufacturing systems.A vital input to build simulation models of manufacturing systems is the system behaviour,which is modelled based on extensive data on manufacturing systems and their elements.However,for outsourced manufacturing systems,data provided from external suppliers to manufacturers are generally limited and insufficient.Therefore,a solution is required to identify and secure system behaviour from available data.We propose herein a behaviour extraction process along with detailed activities and diagrams to extract system behaviour from limited data.By using the systems engineering standard ANSI/EIA-632,the proposed process systematically restructures available data on a manufacturing system and its elements and then provides complete system behaviour to build a simulation model.A case study on a cooling water control system in a hot strip mill convincingly demonstrates the applicability and effectiveness of the proposed process. 展开更多
关键词 BEHAVIOUR EXTRACTION MANUFACTURING SYSTEMS SIMULATION model system BEHAVIOUR SYSTEMS engineering
New LMI Conditions for Reduced-order Observer of Lipschitz Discrete-time Systems: Numerical and Experimental Results
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作者 Noussaiba Gasmi Assem Thabet Mohamed Aoun 《国际自动化与计算杂志:英文版》 EI CSCD 2019年第5期644-654,共11页
The objective of this paper is to propose a reduced-order observer for a class of Lipschitz nonlinear discrete-time systems.The conditions that guarantee the existence of this observer are presented in the form of lin... The objective of this paper is to propose a reduced-order observer for a class of Lipschitz nonlinear discrete-time systems.The conditions that guarantee the existence of this observer are presented in the form of linear matrix inequalities(LMIs). To handle the Lipschitz nonlinearities, the Lipschitz condition and the Young′s relation are adequately operated to add more degrees of freedom to the proposed LMI. Necessary and sufficient conditions for the existence of the unbiased reduced-order observer are given. An extension to H_∞ performance analysis is considered in order to deal with H_∞ asymptotic stability of the estimation error in the presence of disturbances that affect the state of the system. To highlight the effectiveness of the proposed design methodology, three numerical examples are considered. Then, high performances are shown through real time implementation using the ARDUINO MEGA 2560 device. 展开更多
关键词 Reduced-order OBSERVER DISCRETE-TIME SYSTEMS LIPSCHITZ SYSTEMS H_∞ ARDUINO MEGA 2560 device
Boundedness and stability of highly nonlinear hybrid neutral stochastic systems with multiple delays
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作者 Mingxuan SHEN Chen FEI +1 位作者 Weiyin FEI Xuerong MAO 《中国科学:信息科学(英文版)》 SCIE EI CSCD 2019年第10期133-148,共16页
This paper reports the boundedness and stability of highly nonlinear hybrid neutral stochastic differential delay equations(NSDDEs) with multiple delays. Without imposing linear growth condition, the boundedness and e... This paper reports the boundedness and stability of highly nonlinear hybrid neutral stochastic differential delay equations(NSDDEs) with multiple delays. Without imposing linear growth condition, the boundedness and exponential stability of the exact solution are investigated by Lyapunov functional method.In particular, using the M-matrix technique, the mean square exponential stability is obtained. Finally, three examples are presented to verify our results. 展开更多
关键词 HYBRID delay SYSTEMS NEUTRAL stochastic SYSTEMS multiple delays HIGHLY NONLINEAR
Fusion Systems over Mp(1,1,1)× A-groups
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作者 Jun LIAO He Guo LIU Ji Ping ZHANG 《数学学报:英文版》 SCIE CSCD 2019年第8期1311-1320,共10页
In this paper we study the saturated fusion systems over a direct product of the extraspecial group of order p^3 of exponent p and a finite abelian p-group. The result provides some new exotic fusion systems, whose un... In this paper we study the saturated fusion systems over a direct product of the extraspecial group of order p^3 of exponent p and a finite abelian p-group. The result provides some new exotic fusion systems, whose unique components are isomorphic to the exotic fusion systems over 7+^1+2 found by Ruiz and Viruel. 展开更多
关键词 Finite GROUPS FUSION SYSTEMS generalized Fitting SUBGROUPS EXOTIC FUSION SYSTEMS
Stability analysis of switched positive nonlinear systems:an invariant ray approach
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作者 Hao YANG Xudong ZHAO Bin JIANG 《中国科学:信息科学(英文版)》 CSCD 2019年第11期170-184,共15页
This paper addresses the stability problem associated with a class of sw计ched positive nonlinear systems in which each vector field is homogeneous,cooperative,and irreducible.Instead of using the Lyapunov function ap... This paper addresses the stability problem associated with a class of sw计ched positive nonlinear systems in which each vector field is homogeneous,cooperative,and irreducible.Instead of using the Lyapunov function approach,we fully establish the invariant ray analysis method to establish several stability conditions that depend on the states,rays,and/or times.We illustrate the efficiency of our proposed approach using the example of a chemical reaction. 展开更多
关键词 POSITIVE SYSTEMS SWITCHED nonlinear SYSTEMS stability
Constrained sliding mode control of nonlinear fractional order input affine systems 预览
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作者 TAHMINEH Vedadi Moghaddam SEYYED KAMALEDDIN Yadavar Nikravesh MOHAMMAD Azam Khosravi 《系统工程与电子技术:英文版》 SCIE EI CSCD 2019年第5期995-1006,共12页
Asymptotic stability of nonlinear fractional order affine systems with bounded inputs is dealt.The main contribution is to design a new bounded fractional order chattering free sliding mode controller in which the sys... Asymptotic stability of nonlinear fractional order affine systems with bounded inputs is dealt.The main contribution is to design a new bounded fractional order chattering free sliding mode controller in which the system states converge to the sliding surface at a determined finite time.To eliminate the chattering in the sliding mode and make the input controller bounded,hyperbolic tangent is used for designing the proposed fractional order sliding surface.Finally,the stability of the closed loop system using this bounded sliding mode controller is guaranteed by Lyapunov theory.A comparison with the integer order case is then presented and fractional order nonlinear polynomial systems are also studied as the special case.Finally,simulation results are provided to show the effectiveness of the designed controller. 展开更多
关键词 constrained sliding mode control nonlinear fractionalorder systems input affine systems
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A Composite State Convergence Scheme for Bilateral Teleoperation Systems 预览
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作者 Muhammad Usman Asad Umar Farooq +3 位作者 Jason Gu Ghulam Abbas Rong Liu Valentina E.Balas 《自动化学报:英文版》 CSCD 2019年第5期1166-1178,共13页
State convergence is a novel control algorithm for bilateral teleoperation of robotic systems. First, it models the teleoperation system on state space and considers all the possible interactions between the master an... State convergence is a novel control algorithm for bilateral teleoperation of robotic systems. First, it models the teleoperation system on state space and considers all the possible interactions between the master and slave systems. Second, it presents an elegant design procedure which requires a set of equations to be solved in order to compute the control gains of the bilateral loop. These design conditions are obtained by turning the master-slave error into an autonomous system and imposing the desired dynamic behavior of the teleoperation system. Resultantly, the convergence of master and slave states is achieved in a well-defined manner. The present study aims at achieving a similar convergence behavior offered by state convergence controller while reducing the number of variables sent across the communication channel. The proposal suggests transmitting composite master and slave variables instead of full master and slave states while keeping the operator's force channel intact. We show that,with these composite and force variables;it is indeed possible to achieve the convergence of states in a desired way by strictly following the method of state convergence. The proposal leads to a reduced complexity state convergence algorithm which is termed as composite state convergence controller. In order to validate the proposed scheme in the absence and presence of communication time delays, MATLAB simulations and semi-real time experiments are performed on a single degree-of-freedom teleoperation system. 展开更多
关键词 COMPOSITE VARIABLES linear control SYSTEMS STATE CONVERGENCE TELEOPERATION time delay
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Information for Authors
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《系统科学与系统工程学报:英文版》 SCIE EI CSCD 2019年第3期392-392,F0003共2页
A.Submission The Journal publishes papers that are addressed to the theory,methodology and applications relating to systems science and systems engineering.All papers relating to these areas are welcome.1)Please email... A.Submission The Journal publishes papers that are addressed to the theory,methodology and applications relating to systems science and systems engineering.All papers relating to these areas are welcome.1)Please email your manuscript in.doc or.pdf format to jssse@mail.tsinghua.edu.cn for the reviewing process.The manuscript should be complete,including all tables and illustrations,and be prepared in the style described below.2)The manuscript should be double-blind,which means(a)all authors5 names and institutions must be removed,(b)all acknowledgments in the text must be removed. 展开更多
关键词 INFORMATION SYSTEMS removed
Stochastic Iterative Learning Control With Faded Signals 预览
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作者 Ganggui Qu Dong Shen 《自动化学报:英文版》 CSCD 2019年第5期1196-1208,共13页
Stochastic iterative learning control(ILC) is designed for solving the tracking problem of stochastic linear systems through fading channels. Consequently, the signals used in learning control algorithms are faded in ... Stochastic iterative learning control(ILC) is designed for solving the tracking problem of stochastic linear systems through fading channels. Consequently, the signals used in learning control algorithms are faded in the sense that a random variable is multiplied by the original signal. To achieve the tracking objective, a two-dimensional Kalman filtering method is used in this study to derive a learning gain matrix varying along both time and iteration axes. The learning gain matrix minimizes the trace of input error covariance. The asymptotic convergence of the generated input sequence to the desired input value is strictly proved in the mean-square sense. Both output and input fading are accounted for separately in turn, followed by a general formulation that both input and output fading coexists.Illustrative examples are provided to verify the effectiveness of the proposed schemes. 展开更多
关键词 FADING channels ITERATIVE learning control (ILC) KALMAN filtering mean-square convergence STOCHASTIC systems
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A Long-Range Generalized Predictive Control Algorithm for a DFIG Based Wind Energy System 预览
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作者 J.S.Solis-Chaves Lucas L.Rodrigues +1 位作者 C.M.Rocha-Osorio Alfeu J.Sguarezi Filho 《自动化学报:英文版》 CSCD 2019年第5期1209-1219,共11页
This paper presents a new Long-range generalized predictive controller in the synchronous reference frame for a wind energy system doubly-fed induction generator based. This controller uses the state space equations t... This paper presents a new Long-range generalized predictive controller in the synchronous reference frame for a wind energy system doubly-fed induction generator based. This controller uses the state space equations that consider the rotor current and voltage as state and control variables, to execute the predictive control action. Therefore, the model of the plant must be transformed into two discrete transference functions, by means of an auto-regressive moving average model, in order to attain a discrete and decoupled controller, which makes it possible to treat it as two independent single-input single-output systems instead of a magnetic coupled multiple-input multiple-output system. For achieving that, a direct power control strategy is used, based on the past and future rotor currents and voltages estimation. The algorithm evaluates the rotor current predictors for a defined prediction horizon and computes the new rotor voltages that must be injected to controlling the stator active and reactive powers. To evaluate the controller performance, some simulations were made using Matlab/Simulink. Experimental tests were carried out with a small-scale prototype assuming normal operating conditions with constant and variable wind speed profiles. Finally, some conclusions respect to the dynamic performance of this new controller are summarized. 展开更多
关键词 Direct power CONTROL DOUBLY-FED induction GENERATOR flux oriented CONTROL generalized PREDICTIVE CONTROL LONG-RANGE PREDICTIVE CONTROL wind energy systems
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