Linear optimal control of time delay systems via Hermite wavelet

Akram Kheirabadi; Asadollah Mahmoudzadeh Vaziri; Sohrab Effati

doi:10.3934/naco.2019044

Article Contents

2020, Volume 10, Issue 2: 143-156. Doi: 10.3934/naco.2019044

This issue Previous Article Resource allocation and target setting based on virtual profit improvement Next Article Quasilinear iterative method for the boundary value problem of nonlinear fractional differential equation

Linear optimal control of time delay systems via Hermite wavelet

1.
Department of Mathematics, Faculty of Mathematical Science and Statistics, University of Birjand, Birjand, Iran
2.
Department of Applied Mathematics, Faculty of Mathematical Sciences, Ferdowsi University of Mashhad, Mashhad, Iran

^* Corresponding author: Asadollah Mahmoudzadeh Vaziri
^* Corresponding author: Asadollah Mahmoudzadeh Vaziri

Received: July 2018

Revised: July 2019

Published: April 2020

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Abstract

To solve the time delay optimal control problem with quadratic performance index, a direct numerical method based on Hermite wavelet has been proposed in the present study. The idea is to convert the time delay optimal control problem into a quadratic programming problem. To do so, various time functions in the system are expanded as their truncated series and the properties of the operational matrices of integration, delay and product of two Hermite wavelet vectors are used as well. These matrices are utilized to reduce the solution of optimal control with time delay system, to the solution of a quadratic programming with linear constraints. Finally, three examples of time varying and time invariant coefficients are given to compare the results with some of the existing methods.

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Mathematics Subject Classification: Primary: 49J15, 49N05; Secondary: 90C20.

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Table 1. Estimated values for $ J $ for Example 5.1

Proposed method Dadkhah[4] Palanisamy [25] Wang [30]

1.64787419 1.64787419 1.6497 0.85124283

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Table 2. Estimated values for $ J $ for Example 5.2

Proposed method Haddadi[9] Khellat[14] Palanisamy[25]

4.6192 4.7404 5.1713 6.0079

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Table 3. Estimated value for $ J $ for Example 5.3

Proposed method Wang[31]

2.7930174564 2.7930174564

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References

[1]	A. Ali, M. A. Iqbal and S. T. Mohyud-Din, Hermite wavelets method for boundary value problems, International Journal of Modern Applied Physics, 3 (2013), 38-47.
[2]	E. Alirezaei, M. Samavat and M. A. Vali, Optimal control of linear time invariant singular delay systems using the orthogonal functions, Applied Mathematical Sciences, 6 (2012), 1877-1891.
[3]	U. Brandt-Pollmann, R. Winkler, S. Sager, U. Moslener and J. P. Schlder, Numerical solution of optimal control problems with constant control delays, Computational Economics, 31 (2008), 181-206. doi: 10.1007/s10614-007-9113-3.
[4]	M. Dadkhah and M. H. Farahi, Optimal control of time delay systems via hybrid of block-pulse functions and orthogonal Taylor series, International Journal of Applied and Computational Mathematics, 2 (2016), 137–152. Available from: https://doi.org/10.1093/imamci/dnv044. doi: 10.1007/s40819-015-0051-9.
[5]	K. B. Datta and B. M. Mohan, Orthogonal functions in systems and control, in Advanced Series in Electrical and Computer Engineering, World Scientific Publishing Co., (1995), 25–89. doi: 10.1142/2476.
[6]	L. Göllmann, D. Kern and H. Maurer, Optimal control problems with delays in state and control variables subject to mixed control-state constraints, Optimal Control Applications and Methods, 30 (2009), 341-365. doi: 10.1002/oca.843.
[7]	L. Göllmann and H. Maurer, Theory and applications of optimal control problems with multiple time delays, Journal of Industrial & Management Optimization, 10 (2014), 413-441. doi: 10.3934/jimo.2014.10.413.
[8]	J. S. Gu and W. S. Jiang, The Haar wavelets operational matrix of integration, International Journal of Systems Science, 27 (1996), 623-628. doi: 10.1080/00207729608929258.
[9]	N. Haddadi, Y. Ordokhani and M. Razzaghi, Optimal control of delay systems by using a hybrid functions approximation, Journal of Optimization Theory and Applications, 153 (2012), 338-356. doi: 10.1007/s10957-011-9932-1.
[10]	A. Halanay, Optimal controls for systems with time lag, SIAM Journal on Control and Optimization, 6 (1968), 215-234.
[11]	I. R. Horng and J. H. Chou, Analysis, parameter estimation and optimal control of time-delay systems via Chebyshev series, International Journal of Control, 41 (1985), 1221-1234. doi: 10.1080/0020718508961193.
[12]	G. L. Kharatishvili, Maximum principle in the theory of optimal processes involving delay, Dokl. Akad. Nauk SSSR, 136 (1961), 39-42.
[13]	G. L. Kharatishvili, A Maximum Principle in External Problems with Delays, Mathematical Theory on Control, Academic Press: New York, 1967.
[14]	F. Khellat, Optimal control of linear time-delayed systems by linear Legendre multiwavelets, Journal of Optimization Theory and Application, 143 (2009), 107-121.
[15]	M. Malek-Zavarei and M. Jamshidi, Time-Delay Systems: Analysis, Optimization and Applications, Elsevier Science Inc., 1987.
[16]	I. Malmir, Optimal control of linear time-varying systems with state and input delays by Chebyshev wavelets, Statistics, Optimization and Information Computing, 5 (2017), 302-324. doi: 10.19139/soic.v5i4.341.
[17]	H. R. Marzban and S. M. Hoseini, A composite Chebyshev finite difference method for nonlinear optimal control problems, Communications in Nonlinear Science and Numerical Simulation, 18 (2013), 1347-1361. doi: 10.1016/j.cnsns.2012.10.012.
[18]	H. R. Marzban and S. M. Hoseini, Solution of linear optimal control problems with time delay using a composite Chebyshev finite difference method, Optimal Control Applications and Methods, 34 (2013), 253-274. doi: 10.1002/oca.2019.
[19]	H. R. Marzban, Optimal control of linear multi-delay systems based on a multi-interval decomposition scheme, Optimal Control Applications and Methods, 37 (2016), 190-211. doi: 10.1002/oca.2163.
[20]	B. M. Mohan and S. Kumar Kar, Optimal control of multi-delay systems via block-pulse functions, 5th International Conference on Industrial and Information Systems, India, 2010. doi: 10.1109/ICIINFS.2010.5578634.
[21]	B. M. Mohan and S. Kumar Kar, Orthogonal functions approach to optimal control of delay systems with reverse time terms, Journal of the Franklin Institute, 347 (2010), 1723-1739. doi: 10.1016/j.jfranklin.2010.08.005.
[22]	B. M. Mohan and S. Kumar Kar, Optimal control of multi-delay systems via shifted Legendre polynomials, International Conference on Energy, Automation, and Signal (ICEAS), India, 2011. doi: 10.1109/ICEAS.2011.6147161.
[23]	S. H. Nasehi, M. Samavat and M. A. Vali, Analysis and parameter identification of time-delay systems using the Chebyshev wavelets, Journal of Informatics and Mathematical Sciences, 4 (2012), 51-64.
[24]	A. Nazemi and M. M. Shabani, Numerical solution of the time-delayed optimal control problems with hybrid functions, IMA Journal of Mathematical Control and Information, 32 (2015), 623-638. doi: 10.1093/imamci/dnu012.
[25]	K. R. Palanisamy and G. P. Rao, Optimal control of linear systems with delays in state and control via walsh function, IEE Proceedings D (Control Theory and Applications), 130 (1983), 300-312. doi: 10.1049/ip-d.1983.0051.
[26]	M. Razzaghi and M. Razzaghi, Fourier series approach for the solution of linear two-point boundary value problems with time-varying coefficients, International Journal of Systems Science, 21 (1990), 1783-1794. doi: 10.1080/00207729008910498.
[27]	H. R. Sharif, M. A. Vali, M. Samavat and A. A. Gharavisi, A new algorithm for optimal control of time-delay systems, Applied Mathematical Sciences, 5 (2011), 595-606.
[28]	D. Shih, F. Kung and C. Chao, Laguerre series approach to the analysis of a linear control system incorporating observes, International Journal of Control, 43 (1986), 123-128. doi: 10.1080/00207178608933452.
[29]	O. Stryk and R. Bulirsch, Direct and indirect methods for trajectory optimization, Annals of Operations Research, 37 (1992), 357-373. doi: 10.1007/BF02071065.
[30]	X. T. Wang, Numerical solutions of optimal control for linear time-varying systems with delays via hybrid functions, Journal of the Franklin Institute, 344 (2007), 941–953. doi: 10.1016/j.jfranklin.2007.03.001.
[31]	X. T. Wang, Numerical solutions of optimal control for time delay systems by hybrid of block-pulse functions and Legendre polynomials, Applied Mathematics and Computation, 184 (2007), 849-856. doi: 10.1016/j.amc.2006.06.075.