@article {10.3844/ajeassp.2008.104.109, article_type = {journal}, title = {Closed Form Solution to an Optimal Control Problem by Orthogonal Polynomial Expansion }, author = {Tavallaei, Mohammad Ali and Tousi, Behrouz}, volume = {1}, number = {2}, year = {2008}, month = {Jun}, pages = {104-109}, doi = {10.3844/ajeassp.2008.104.109}, url = {https://thescipub.com/abstract/ajeassp.2008.104.109}, abstract = {In this study the use of orthogonal polynomials for obtaining a close form solution to optimal control problems with a weighed quadratic cost function, is proposed. The method consists of using the Orthogonal Polynomials for the expansion of the state variables and the control signal. This expansion results in a set of linear equations, from which the closed form solution is obtained. A numerical example is provided to demonstrate the applicability and effectiveness of the proposed method.}, journal = {American Journal of Engineering and Applied Sciences}, publisher = {Science Publications} }