Optimal Online Path Planning for Approach and Landing Guidance
Abstract
A method for solving finite-horizon optimal control of nonlinear systems has been developed in this paper and used for an online path planning problem. The new controller synthesis is motivated by the state-dependent Riccati equation (SDRE) technique that was developed for solving regulator and tracking problems. However, finite-time problems need to meet specified boundary conditions for the associated Riccati equations. A closed form solution, called the Finite-SDRE, is obtained for the time-varying Riccati equations by using certain approximations. The application in this paper is the closed loop guidance of a reusable launch vehicle (RLV) during its approach and landing (A&L) phase in such a way to land the RLV at a fixed downrange with the least possible vertical velocity and flight path angle. Simulation studies show that the controller provides an excellent performance in terms of meeting the objectives and is quite robust to initial conditions. © 2011 by A. Heydari & S.N. Balakrishnan.
Recommended Citation
A. Heydari and S. N. Balakrishnan, "Optimal Online Path Planning for Approach and Landing Guidance," Proceedings of the AIAA Atmospheric Flight Mechanics Conference 2011 (2011, Portland, OR), American Institute of Aeronautics and Astronautics (AIAA), Aug 2011.
The definitive version is available at https://doi.org/10.2514/6.2011-6641
Meeting Name
AIAA Atmospheric Flight Mechanics Conference 2011 (2011: Aug. 8-11, Portland, OR)
Department(s)
Mechanical and Aerospace Engineering
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2011 American Institute of Aeronautics and Astronautics (AIAA), All rights reserved.
Publication Date
11 Aug 2011
