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Vol 51, No 6 (2017)

Article

Exact gradient controllability with strategic actuators

El Harraki I., Khazari A., Boutoulout A.

Abstract

In this paper, we develop results related to the gradient controllability and actuators. The concept of gradient strategic actuators is characterized and applied to the gradient controllability of systems described by a hyperbolic equation. This emphasizes the spatial structure and the location of the actuator in order to achieve the gradient controllability. We combine the Hilbert uniqueness method and the characterization of the strategic actuators to solve the gradient controllability problem for the wave equation. The developed results are illustrated by many examples of specific shapes and systems.

Automatic Control and Computer Sciences. 2017;51(6):377-390
pages 377-390 views

Diagnostic Neuro-Fuzzy System and Its Learning in Medical Data Mining Tasks in Conditions of Uncertainty about Numbers of Attributes and Diagnoses

Pliss I., Perova I.

Abstract

Architecture and learning method for evolving diagnostic neuro-fuzzy-system for Medical Data Mining tasks in situation of uncertainty about quantities of attributes and diagnoses are proposed. Diagnostic neuro-fuzzy-system was approbated on data set, which present erosive ulcerous disease of the gastrointestinal tract and shown high quality of classification in condition of different quantity of input and output data.

Automatic Control and Computer Sciences. 2017;51(6):391-398
pages 391-398 views

Algorithms for planning Resource-Intensive computing tasks in a hybrid supercomputer environment for simulating the characteristics of a quantum rotation sensor and performing engineering calculations

Ilyashenko A.S., Lukashin A.A., Zaborovsky V.S., Lukashin A.A.

Abstract

The article considers the problem of planning computing tasks in hybrid supercomputer systems using the example of the Polytechnic Supercomputer Center. We have explored the classes of tasks using the distribution of calculations planning and shown their specific character when using hybrid supercomputer resources. With this in mind, we have developed the algorithms to optimize the use of resources of supercomputer systems. Furthermore, we have proposed an algorithm predicting task execution time taking into account the characteristics of the computation node and task parameters. Finally, after conducting the research we have compared the developed algorithms.

Automatic Control and Computer Sciences. 2017;51(6):426-434
pages 426-434 views

Pressure regulation inside a hypersonic wind tunnel using H-infinity optimization control

Rajani S.H., Krishna B.M., Nair U.

Abstract

Hypersonic wind tunnel is a ground-based facility used to study the aerodynamic properties of space vehicles during re-entry. This paper aims at designing an H-infinity controller with krill herd optimization algorithm to regulate pressure inside the settling chamber of a hypersonic wind tunnel. The krill herd algorithm is a novel stochastic algorithm for improving the performance characteristics by optimizing the H-infinity controller parameters. The proposed algorithm minimizes the H-infinity norms by tuning the controller weighing function parameters. The dynamic characteristics of the settling chamber pressure with H-infinity and H-infinity control based on krill herd algorithm is studied by numerical simulations. The proposed algorithm is highly efficient and robust in controlling the settling chamber pressure in terms of performance parameters.

Automatic Control and Computer Sciences. 2017;51(6):399-409
pages 399-409 views

Response to CBRNE and human-caused accidents by using land and air robots

Baums A.

Abstract

In the EU, the basis of the civil protection response to CBRNE, earth/disaster and humancaused accidents is the Emergency Response Coordination Center. For a fast response, two different architectures of centers of the regional system (CRS), with land and area robots, are presented and investigated. In the case of a static center, the robots are remotely controlled from the center by an operator. In this realization, the distance to the area to be investigated is restricted by the distance of possible remote control by the operator. The second one is a dynamic CBRN protection system, where the majority of CRS functions are organized on a car separate from the CRS building. By the car', the distance from the CRS to the accident place can usually be reached at the car motion speed. This is the main advantage of the dynamic system.

Automatic Control and Computer Sciences. 2017;51(6):410-416
pages 410-416 views

Implementation and operation aspects of a system for detecting abnormally level of user activity

Osipov P.A., Aleksejeva L.Y., Borisov A.N., Chizhov Y.A., Zmanovska T.P., Zabiniako V.M.

Abstract

The present paper discusses various aspects of embedding the intrusion detection system based on the personal adaptive behavior profile into the existing complex information system. The paper proposes the classification of types of access to the target information infrastructure in order to assess the feasibility of the established system integration. The criteria for evaluating the effectiveness of the implementation of the established system are also described. A method for calculating the dynamic threshold level of abnormality is proposed in the present research. The paper also considers a technique of adjusting the sensitivity of the system in case of abnormal user behavior. The paper describes the approach used for system scaling in case of an increase in the intensity of the incoming requests.

Automatic Control and Computer Sciences. 2017;51(6):417-425
pages 417-425 views

An anisotropic-tolerant and error control localization algorithm in wireless sensor network

Yao J., Yan X., Dou R.

Abstract

Multi-hop localization schemes are low cost, easy to implement and suitable for large-scale application. However, in practical applications, the performances of multi-hop localizations are often affected by anisotropic networks, such as irregular deployment of nodes and uneven distribution of nodes. The anisotropic problem makes the application of multi-hop localization limited, so we propose a new multi-hop approach for anisotropic network. This scheme constructs the mapping relation between hop-counts and physical distance and this algorithm views the process of location estimation as a regression prediction. In addition, we employ the geometric precision factor (Geometric Dilution Precision) to select the anchors, and effectively avoid the problem of the error amplification of the geometric relations of the anchors. Theoretical analysis and simulation results show that our proposed method can adapt to different environments, and the method has the advantages of small overhead, high precision without setting complex parameters.

Automatic Control and Computer Sciences. 2017;51(6):442-452
pages 442-452 views

Optimal control of rail transportation associated automatic train operation based on fuzzy control algorithm and PID algorithm

Shen H., Yan J.

Abstract

Rail transportation develops rapidly in recent years, which has made great contribution to the solution of urban traffic jam and promoted the coordinated development of urban economy and environment. Automatic train operation (ATO) system can transform artificial train work into automatic train work. Therefore, the optimal control of ATO system is of great significance to the improvement of operation efficiency of rail transportation and the reduction of labor strength of train drivers. The regulation of train speed is the key of ATO system operation, and PID control algorithm is a common control algorithm. Train automatic drive can be realized through repeatedly debugging parameters through a large amount of experiments using the traditional PID control algorithm; however, it wastes time and energy and is complicated to operate. This study made optimal control on rail transportation associated ATO using fuzzy control algorithm in combination with PID control algorithm to make up for deficiencies, with the intention of achieving the control on the train start and speed, direction adjustment and accurate control of train parking and cruising.

Automatic Control and Computer Sciences. 2017;51(6):435-441
pages 435-441 views

The effect of presynaptic inhibition in switching neurostructures

Sychev A.N.

Abstract

A presynaptic inhibition function is described based on the language of Boolean algebra. A Fibonacci neuron is adduced as the equivalent of the sequential composition of such functions. Effective implementations of logic circuits are proposed. Affine transformations of necessary arguments are determined by Walsh spectral representations. The complexity of switching neural networks with dual neurons is analyzed.

Automatic Control and Computer Sciences. 2017;51(6):453-462
pages 453-462 views