SOME PROBLEMS STRUCTURAL-PARAMETRIC SYNTHESIS OF CONTROL SYSTEMS OF COMPLEX OBJECTS UNDER UNCERTAINTY INITIAL INFORMATION

N. R.Yusupbekov, Sh.M.Gulyamov, F.A.Ergashev, S.Z.Artykov, A.O.Ataullayev

Tashkent State technical university

The last years in modern systems of the automated design (SAD) computer modeling that lifts design process on qualitatively new level is used. The majority of them contain the module of parametrical optimization.

The structure can be non-optimal as even the expert armed with modern SAPR can test only insignificant number of structural decisions, on a task and modification of structures essential time expenditure is required. It is logical to demand from SAPR of support of automatic generation of various structures of designed devices, a variation of these structures, optimization realization as structures of all device, and separate substructures. Therefore, they will support procedure of the automated structural and parametrical synthesis.

The intensive development of technology makes new rigid requirements to modern management systems and opens new opportunities both at the level of local management systems, and at the level of group interaction of distributed management systems.

Today's complex technical systems are characterized by multi-level, high-dimension management, distribution in space, decentralization, and the need for effective planning of activities including training, multicriteria decision making, and reflection control subjects [1].

Systems of communication and networking, group, distributed management becoming more and more management information systems and accounting characteristics of communication channels is required, for example in decentralized multi-agent systems, and features built-in calculator are important when implementing a multi-level control systems, intelligent features such as machine vision, action planning, training, multicriteria decision making, reflection, etc.In this case, the intellectualization of management aims to increase the degree of autonomy of the functioning of the systems, where the absence of quantitative models of the dynamics or disturbances in the operation of a facility management, resulting in the loss of the adequacy of quantitative models in the form of equations formalizing the evolution of a complex dynamic system, strengthen the role of quality "Knowledge", the logical-linguistic, fuzzy object models and environments used in the middle and upper levels of the administration.

In these circumstances the urgency of obtaining new fundamental and applied results in the theory of management of complex technical, man-machine and other dynamic systems, taking into account the uncertainty and lack of baseline information, the theory of the creation of systems of mobile objects and processes, including: analysis theory and synthesis of stochastic systems, with prompt diagnosis and monitoring the technical condition, as well as the theory of the creation of automated systems design and intelligent control based on modern information technology.

In view of the diversity of application of the theory of management, analysis and optimization in various applications (logistics, transportation, aviation, industrial and space-based systems) to consider a large number of factors such as: high dimensionality, multi-level governance, decentralized, non-linearity, is multiply the distribution of parameters , processes in space and time and their different scales, the presence of coordinate-parametric, structural, regular and singular perturbations, describing the heterogeneity of sub-systems, the presence of pulse effects, the use of deterministic and probabilistic models used to describe the uncertainty about the state vector and system parameters on the properties of measurement errors and external environment, the overall structural complexity of modern control systems, the presence of the retardation effects in the management or object.

In addition, in some systems, the use of classical methods to describe in a continuous or discrete time is complicated by the fact that there are internal and / or external forces of interaction and control actions are close to the pulse and not subject to precise calculation. The system as it operates in different time scales: the real and the quickening. Such simulated different scales of time - an intrinsic property of many of today's multi-level governance, in which the upper levels using qualitative and discrete models, and bottom - most quantitative models with continuous time.

The complexity of modern management systems often does not provide a complete description of the pre-study process and its interaction with the environment. Typically, real systems are described by nonlinear dynamics equations and mathematical models of objects often take into account only the allowable control range of the parameters and characteristics of the constituent elements without specifying the actual parameters of their characteristics and properties. In this regard, mathematical formalization of the operation of such facilities in a hybrid (continuous-discrete) time, the study of their properties for handling and stability under conditions of incomplete information, combat and non-standard restrictions on the control and state variables has topicality.

Timeliness has also developed techniques for the synthesis of optimal control of such complex continuous-discrete systems.

In addition, uncertainty and lack of prior information relevant problem of optimizing the collection and processing of information and optimal filtering.

Discussed some pressing problems of the theory of structural and parametric synthesis of management systems for complex dynamic objects require intensive develop them. The development of research in this area will develop the theoretical foundations of management solutions for complex information management systems, including in terms of restrictions on the channels of communication and failure of subsystems, as well as to solve the problems of management of new objects and processes related to moving objects, technological and organizational systems.

Literature

1 .Yusupbekov N. R., Aliyev R. A. Adylov F.T. Gulyamov Sh. M. Analytical information technologies of factory automation. Monograph – Tashkent: TashSТU, 2004. 157p.