Abstract
Using Ritz's procedure of representing the control functions of an optimal control problem by a function series with parameters to be optimized, it is shown that, from the well-known gradient procedure for dynamic problems, a simple iteration formula for the optimization of these parameters can be derived. Using an example with a technical background, the effectiveness of the program realization of this approach is demonstrated and is compared with the results of unrestricted dynamic optimization.
Similar content being viewed by others
References
Ritz, W.,Über eine Neue Methode zur Lösung Gewisser Variationsprobleme der Mathematischen Physik, Journal für Reine und Angewandte Mathematik, Vol. 135, pp. 1–61, 1908.
Rosenbrock, H., andStorey, C.,Computational Techniques for Chemical Engineers, Pergamon Press, London, England, 1966.
Hicks, G., andRay, W.,Approximation Methods for Optimal Control Synthesis, Canadian Journal of Chemical Engineering, Vol. 49, pp. 522–528, 1971
Sirisena, H.,Computation of Optimal Control Synthesis Using a Piecewise Polynomial Approximation, IEEE Transactions on Automatic Control, Vol. AC-18, pp. 409–411, 1973.
Lastman, G.,Suboptimal Open-Loop Control of Nonlinear Systems Using Approximations for the Controls, International Journal of Control, Vol. 20, pp. 284–303, 1974.
Tapley, B., andLewallen, J.,Comparison of Several Numerical Optimization Methods, Journal of Optimization Theory and Applications, Vol. 1, pp. 1–32, 1967.
Bryson, A., Denham, W., Caroll, E., andMikami, K.,Determination of the Lift or Drag Program That Minimizes Reentry Heating with Acceleration or Range Constraints, IAS Paper No. 61-6, 1961.
Kelley, H.,Gradient Theory of Optimal Flight Path, ARS Journal, Vol. 30, pp. 947–954, 1960.
Rosen, J.,The Gradient Projection Method for Nonlinear Programming, Part 1: Linear Constraints, SIAM Journal on Applied Mathematics, Vol. 8, pp. 181–217, 1960.
Tolle, H.,Optimization Methods, Springer-Verlag, New York, New York, 1975.
Asselmeyer, B.,Zur Optimalen Endwertregelung Nichtlinearer Systeme mit Hilfe Kleiner Rechner, TH Darmstadt, Darmstadt, West Germany, Dissertation, 1980.
Gottlieb, G.,Rapid Convergence to Optimum Solutions Using a Min-H Strategy, AIAA Journal, Vol. 5, pp. 322–329, 1967.
Jacoby, S., Kowalik, J., andPozzo, J.,Iterative Methods for Nonlinear Optimization Problems, Prentice-Hall, Englewood Cliffs, New Jersey, 1972.
Deuflhard, P.,A Relaxation Strategy for the Modified Newton Method, Proceedings of the Conference on Optimization and Optimal Control, Oberwolfach, West Germany, pp. 59–73, 1975.
Asselmeyer, B.,A Two-Level Optimal Final-Value Control System for Nonlinear Plants Realized with Mini/Micro Computers, Optimal Control Applications and Methods, Vol. 3, pp. 41–52, 1982.
Author information
Authors and Affiliations
Additional information
Communicated by R. Sargent
This work was performed at the Technische Hochschule in Darmstadt, West Germany, with financial support from the DFG (Deutsche Forschungs-Gemeinschaft).
Rights and permissions
About this article
Cite this article
Asselmeyer, B. Optimal control for nonlinear systems calculated with small computers. J Optim Theory Appl 45, 533–543 (1985). https://doi.org/10.1007/BF00939133
Issue Date:
DOI: https://doi.org/10.1007/BF00939133