Adaptive control over nonlinear objects using the robust neural network FCMAC
Journal Title: Восточно-Европейский журнал передовых технологий - Year 2018, Vol 2, Issue 4
Abstract
The paper explores issues related to the application of artificial neural networks (ANN) when solving the problems on identification and control of nonlinear dynamic systems. We have investigated characteristics of the network, which is a result of the application of the apparatus of fuzzy logic in a classical СМАС neural network, which is titled FCMAC ‒ Fuzzy Cerebral Model Arithmetic Computer. We studied influence of the form of receptive fields of associative neurons on the accuracy of identification and control; various information hashing algorithms that make it possible to reduce the amount of memory required for the implementation of a network; robust learning algorithms are proposed allowing the use of a network in systems with strong perturbations. It is shown that the FСМАС network, when selecting appropriate membership functions, can be applied in order to synthesize indirect control systems with and without a reference model; it is more efficient to use it in control systems with the reference model. This sharply reduces the quantity of training pairs and simplifies the coding due to the narrower range of the applied values of input signals. The results obtained are confirmed by simulation modeling of the processes of identification of and control over nonlinear dynamical systems
Authors and Affiliations
Oleg Rudenko, Oleksandr Bezsonov, Oleh Lebediev
Formalization of the concept of adaptive tasks mapping in the reconfigurable computers on FPGA
<p>The effectiveness of data processing in the reconfigurable computer systems depends significantly on the unproductive time costs of the reconfiguration of the FPGA computational space. It is an important modern proble...
Determining the effective characteristics of a composite with hollow fiber at longitudinal elongation
<p>When solving problems on the mechanics of composites, it is convenient to use a composite model in the form of a continuous homogeneous medium with effective constants, which adequately reflect its most essential char...
Devising a fuzzy stakeholder model for optimizing the portfolio of projects at a fishing industrial enterprise taking risks into account
<p class="Pa81">The method for portfolio investment, allowing the formation of the optimal portfolio structure considering degrees of satisfaction of requirements of stakeholder groups, risks and uncertainty of external...
Construction of spectral decomposition for non-self-adjoint friedrichs model operator
<p>The spectral decomposition for the non-self-adjoint Friedrichs model is given and a generalization of the well-known Weyl function in non-self-adjoint cases is given. It is found that for the non-self-adjoint Friedric...
Definition of synthesis parameters of ultrafine nickel powder by direct electrolysis for application in superalloy production
<p>The optimization of the synthesis method of ultrafine nickel powder for the production of superalloys, by means of direct electrolysis of the nickel ammine complex, has been conducted. The influence of electrolyte tem...