Keywords: optimal control, multilayer artificial neural network, neuron ensemble, activation function, mathematical model, system of differential equations with delayed argument, multicriteria problem
MATHEMATICAL MODELING OF OPTIMAL CONTROL OF DYNAMIC SYSTEMS BY ARTIFICIAL NEURAL NETWORKS
UDC 519.97, 519.6, 007.681.5
DOI:
Currently, an important technical and theoretical task is to develop methods and methods for managing complex dynamic objects that use both traditional methods for controlling dynamic systems (the Pontryagin maximum principle, the Bellman control synthesis method, the theory of automatic control), and methods based on the training of artificial neural networks, such as methods with a reference model, predictive neural control, method for back propagation of an error, etc. Neuropravlenie can be used in the management of fighters, asynchronous electric drives and computers. To develop intelligent control systems, methods of artificial intelligence can be combined with the achievements of the classical theory of optimal control. The article shows the possibility of combining classical methods of optimal control and optimization methods, such as the Pontryagin maximum principle for delayed argument systems, dynamic programming methods, etc., with methods using artificial neural networks.. The use of neural control technologies is caused by the existence of uncontrolled noises and interference. The advantage of neural networks is the possibility of their training, with the right choice of the activation function, accounting for delay in signal transmission between neurons and the formation of an input signal. The aim of the article is the development and construction of a generalized mathematical model for controlling a complex dynamic automatic control system using methods of optimal control theory, optimization methods and neural networks; developing a general hybrid algorithm for obtaining optimal values of control functions and weighting coefficients of a neural network that optimize a given functional. The created model can be used for various activation functions, taking into account the lag and limitations on the control parameters. An algorithm for constructing a numerical solution is developed depending on the values of the parameters of the model, the method, and the type of activation functions. At the end of the article the results of the computational experiment are shown.
1. Galushkin A.I. Neural networks. Fundamentals of the theory. – М.: Hot line – Telecom, 2012. – 496 с.
2. Terekhov VA, Efimov DV, Tyukin I.Yu. Neural network control systems. – Moscow: Higher School, 2002. – 183 p.
3. Prokhorov Danil V. Toyota Prius HEV Neurocontrol and Diagnostics. // Neutral Networcs. – 2008. – № 21. – P. 458-465.
4. Mikrin E.A. On-board control systems for space vehicles. – Moscow: Bauman MSTU, 2014. – 245 p.
5. Luukkonen Teppo. Modelling and control of quadcopter. URL http://sal.aalto.fi/publications/pdf-files/eluu11_public.pdf (date of reference 03/05/2018).
6. Pontryagin L.S. Optimal regulation processes. // The success of mathematical Sciences. 1959. – Vol. 14. – Issue. 1. – P. 3 – 20.
7. Andreeva E.A., Kolmanovsky V.B., Shaikhet L.Ye. Management of systems with aftereffect. – Moscow: Nauka, 1992. – 336 p.
8. Andreeva E.A. Management of dynamic systems. – Tver: Tver state University, 2016. – 188 p.
9. Andreeva E.A., Tsiruleva V.M. Variations calculus and optimization methods. – Moscow: Higher School, 2006. – 584 p.
10. Bellman R. Dynamic programming. – Moscow: Foreign Literature, 1960. – 400 p.
11. Rafalskaya N.V., Tsiruleva V.M. Sufficient conditions of optimality in a problem linear jn phase variables and in model of water purification. // Application of functional analysis in approximation theory. – Tver: Tver. state. University, 2001. – P. 108 – 124
12. Yevtushenko Yu.G. Methods for solving extremal problems and their application in optimization systems. – Moscow: Nauka, 1982. – 432 p
13. Andreeva E.A, Tsiruleva V.M. Mathematical modeling of control of a dynamic neural network with delay. // Modeling, optimization and information technologies. – Voronezh: 2018. – Volume 6. №1. 14 c
14. Andreeva E.A., Pustarnakova Yu.A. Numerical methods for training artificial neural networks with delay. // Journal of Computational Mathematics and Mathematical Physics. 2002. – T. 42. P. 1383–1391.
15. Andreeva E.A., Pustarnakova Yu.A. Optimization of the neural network with delay. – // Application of functional analysis in approximation theory. – Tver: Tver. state. University, 2000. –. – P. 14 – 30.
16. Andreeva E.A., Tsiruleva V.M., Kozheko L.G. The model of fisheries management. // Modeling, optimization and information technologies. – Voronezh: 2017. – № 4 (19). – 10 p
Keywords: optimal control, multilayer artificial neural network, neuron ensemble, activation function, mathematical model, system of differential equations with delayed argument, multicriteria problem
For citation: Andreeva E.A., Tsiruleva V.M. MATHEMATICAL MODELING OF OPTIMAL CONTROL OF DYNAMIC SYSTEMS BY ARTIFICIAL NEURAL NETWORKS. Modeling, Optimization and Information Technology. 2018;6(2). URL: https://moit.vivt.ru/wp-content/uploads/2018/04/AndreevaZiruleva_2_18_1.pdf DOI: (In Russ).
Published 30.06.2018