The emergence of high-frequency converters has introduced additional stress on the bearings of the systems they are used in: the high-frequency components of the converter output voltage may lead to building up of vol...
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The simple relay auto-tuners are based on the idea that the ultimate gain and the ultimate period can be determined from a simple relay feedback experiment. This tuning principle has proven very successful in practica...
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The simple relay auto-tuners are based on the idea that the ultimate gain and the ultimate period can be determined from a simple relay feedback experiment. This tuning principle has proven very successful in practical industrial applications. This paper proposes a new tuning method which is also based on a relay feedback experiment. A new method to process the data from the experiment gives a sampled data model. Many different analog and digital design methods can be applied to the model including dead-time compensation, pole placement etc. The method also offers interesting possibilities to determine the process time delay and to validate the model. The method is also ideally suited for pre-tuning of more complicated adaptive algorithms. The paper describes the basic idea and gives some examples.
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 go...
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The paper presents the earlier evolution of CACSD tools in an software engineering perspective. A model of the design process is presented as the basis for principles and requirements of future CACSD tools. Combinabil...
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An efficient nearest neighbor codeword search algorithm based on Hadamard transform for vector quantization is presented in this paper. Four efficient elimination criteria are derived from two important inequalities b...
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Next to flight and system status or sensor data, synthetic vision systems visualize information stored in databases on board of the aircraft in an intuitive manner on flight deck displays. For example, through the thr...
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Our analysis of the KQML(Knowledge Query and Manipulation Language) model yielded some conclusions on the knowledge level of communication in agent-oriented program. First, the agent state and transition model were gi...
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Our analysis of the KQML(Knowledge Query and Manipulation Language) model yielded some conclusions on the knowledge level of communication in agent-oriented program. First, the agent state and transition model were given for analyzing the necessary conditions for interaction with the synchronal and asynchronous KQML model respectively. Second, we analyzed the deadlock and starvation problems in the KQML communication, and gave the solution. At last, the advantages and disadvantages of the synchronal and asynchronous KQML model were listed respectively, and the choosing principle was given.
A recursive scheme is derived for calculation of the expansion coefficients of a known system transfer function into a generalized orthonoimal rational basis. The inherent structure of the basis functions leads to a c...
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A recursive scheme is derived for calculation of the expansion coefficients of a known system transfer function into a generalized orthonoimal rational basis. The inherent structure of the basis functions leads to a computationally efficient method, which needs the solution of a low-dimensional Sylvester equation at each step. The method is demonstrated with a brief example. Possible applications are also discussed.
In this paper a comprehensive introduction for modeling and control of networked evolutionary games （NEGs） via semi-tensor product （STP） approach is presented. First, we review the mathematical model of an NEG, wh...
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In this paper a comprehensive introduction for modeling and control of networked evolutionary games （NEGs） via semi-tensor product （STP） approach is presented. First, we review the mathematical model of an NEG, which consists of three ingredients： network graph, fundamental network game, and strategy updating rule. Three kinds of network graphs are considered, which are i） undirected graph for symmetric games; ii） directed graph for asymmetric games, and iii） d-directed graph for symmetric games with partial neighborhood information. Three kinds of fundamental evolutionary games （FEGs） are discussed, which are i） two strategies and symmetric （S-2）; ii） two strategies and asymmetric （A-2）; and iii） three strategies and symmetric （S-3）. Three strategy updating rules （SUR） are introduced, which are i） Unconditional Imitation （UI）; ii） Fermi Rule（FR）; iii） Myopic Best Response Adjustment Rule （MBRA）. First, we review the fundamental evolutionary equation （FEE） and use it to construct network profile dynamics （NPD）of NEGs.
To show how the dynamics of an NEG can be modeled as a discrete time dynamics within an algebraic state space, the fundamental evolutionary equation （FEE） of each player is discussed. Using FEEs, the network strategy profile dynamics （NSPD） is built by providing efficient algorithms. Finally, we consider three more complicated NEGs： i） NEG with different length historical information, ii） NEG with multi-species, and iii） NEG with time-varying payoffs. In all the cases, formulas are provided to construct the corresponding NSPDs. Using these NSPDs, certain properties are explored. Examples are presented to demonstrate the model constructing method, analysis and control design technique, and to reveal certain dynamic behaviors of NEGs.
In this paper, large amount of subsection calculations and complex calculation of the traditional algorithm of an electronic anti-fouling system excitation coil current is analyzed, and a method based on a signal supe...
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In this paper, large amount of subsection calculations and complex calculation of the traditional algorithm of an electronic anti-fouling system excitation coil current is analyzed, and a method based on a signal superposition theory of a linear system is put forward. What's more, a model system consisting of the electronic anti-fouling system and aqueous solution in the tube is established and the induced current is calculated carrying on reasonable approximates. Then the correctness of the proposed method and rationality of approximate system model are proved using finite element numerical method. This research will improve the adaptability of the electronic anti-fouling system in different water quality and optimize the effect on anti-scaling, and it provides a useful theoretical basis for further research on anti-scaling mechanism of electronic anti-fouling system.
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