This paper presents a challenging industrial benchmark for implementation of control strategies under realistic working conditions. The developed control strategies should perform in a plug & play manner, i.e. ada...
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This article addresses the problem of drinking water distribution system (DWDS) security in the terms of water quality which in the era of terrorist threat is of high importance to the public. The contribution of this...
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ISBN:
(纸本)9781467313971
This article addresses the problem of drinking water distribution system (DWDS) security in the terms of water quality which in the era of terrorist threat is of high importance to the public. The contribution of this paper is the development of the so called security module to extend a multi-species water quality model. This gives an insight to the situation in DWDS not only under normal operational conditions but also in case of a malicious attack on water quality. Moreover the security inputs are formally introduced to the model structure. This module enables simulation of both bacterial and/or chemical water contamination in DWDS environment. Previously defined inputs are utilised in proposed experiments by an attacking agent to influence the DWDS quality. The purpose of model development is to enable water scientists and water authorities to simulate the contamination propagation pathways and mechanisms throughout the network without omitting the 'natural' water chemistry effects. A simple simulation example for the exemplary DWDS illustrates the model performance for two distinct contamination scenarios.
This paper focuses on intervention of collective behavior of multi-agent systems. Distinct from the classical leader-follower method that guides group based on the inclination of convergence, here by virtue of collisi...
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This paper focuses on intervention of collective behavior of multi-agent systems. Distinct from the classical leader-follower method that guides group based on the inclination of convergence, here by virtue of collision avoidance in flocking behavior, we intervene in collective behavior by adding some obstacles and designing their moving strategies. A model which can be treat as a shepherding process is developed, where the sheep moves according to Boid model, and the shepherd aims to drive all sheep to a desired place. Two strategies with both global and only local information are designed for the shepherd to fulfill the intervention task. Based on Netlogo, we vividly show the shepherding process and prove the efficiency of the obstacle-avoidance method.
Evolutionary programming(EP) has been applied with success to many numerical and combinatorial optimization problems in recent years. EP has rather slow convergence rates, however, on some function optimization proble...
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ISBN:
(纸本)9781467301732
Evolutionary programming(EP) has been applied with success to many numerical and combinatorial optimization problems in recent years. EP has rather slow convergence rates, however, on some function optimization problems. In this paper the Bi-Group evolutionary programming is proposed to overcome the premature convergence. There are two groups in the Bi-Group evolutionary programming. The global group is responsible for searching the whole space. The local group is responsible for searching the local part in detail. The cooperation and specialization between different groups are considered during the algorithm design. The experimental results show the Bi-Group evolutionary programming is efficient in image processing.
This study proposes a new PI-servo with state-D feedback control design method for linear timeinvariant systems of type-0. The method aims for simultaneous command following and disturbance rejection control objective...
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This study considers the problem of state-derivative feedback controller design via eigenvalue assignment for LTI systems of linear Delay Differential Equations (DDEs) with a single delay. Unlike simple LTI systems, t...
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Using a supermarket refrigeration system as an illustrative example, the paper postulates that by appropriately utilising knowledge of plant operation, the plant wide performance can be optimised based on a small set ...
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The aim of this paper is to improve voltage quality at the terminals of distributed generators (DGs) in an islanded microgrid. To achieve this goal, it is proposed to include separate voltage and current control loops...
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This paper presents an operational approach for determining satellite attitude from carrier phase GPS (Global Positioning system) measurements. A conventional recursive least square (RLS) estimator was implemented wit...
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This paper presents an operational approach for determining satellite attitude from carrier phase GPS (Global Positioning system) measurements. A conventional recursive least square (RLS) estimator was implemented without requiring spacecraft dynamics. The proposed approach can be applicable for general space missions, particularly for real-time operation onboard-spacecraft. The attitude angles and electrical path difference (line bias) between antenna chains caused an offset error in GPS observables, can be estimated. The implemented estimator was tested with a simulated data, and the flight data collected onboard a mini-satellite orbiting in low Earth orbit.
In the above titled paper (ibid., vol. 23, no. 3, p. 4700604, Jun. 2013), there are errors within some of the texts and figures. The author has corrected these here.
In the above titled paper (ibid., vol. 23, no. 3, p. 4700604, Jun. 2013), there are errors within some of the texts and figures. The author has corrected these here.
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