TY - GEN
T1 - A constrained LQ approach to numerical solutions for constrained nonlinear optimal control problems
AU - Imae, Joe
AU - Ando, Tomonari
AU - Kobayashi, Tomoaki
AU - Zhai, Guisheng
PY - 2009
Y1 - 2009
N2 - We propose a new algorithm for numerical solutions of constrained nonlinear optimal control problems, based on constrained LQ problems. The proposed algorithm is described as follows. First, we approximate the constrained nonlinear optimal control problems by the Taylor expansion technique, resulting in the standard LQ problems, but with linearized constraints. Then, by making use of penalty function methods, we construct the augmented LQ problem, which is one of unconstrained optimal control problems, and therefore we can easily obtain the optimal solution of the augmented LQ problem by Riccati transformation. Finally, repeating the above procedure with a certain type of filter, we ventually obtain the numerical solutions for constrained nonlinear optimal control problems. The effectiveness is demonstrated through simulation.
AB - We propose a new algorithm for numerical solutions of constrained nonlinear optimal control problems, based on constrained LQ problems. The proposed algorithm is described as follows. First, we approximate the constrained nonlinear optimal control problems by the Taylor expansion technique, resulting in the standard LQ problems, but with linearized constraints. Then, by making use of penalty function methods, we construct the augmented LQ problem, which is one of unconstrained optimal control problems, and therefore we can easily obtain the optimal solution of the augmented LQ problem by Riccati transformation. Finally, repeating the above procedure with a certain type of filter, we ventually obtain the numerical solutions for constrained nonlinear optimal control problems. The effectiveness is demonstrated through simulation.
KW - Computational method
KW - Constrained nonlinear optimal control problem
KW - LQ problem
KW - Penalty function
UR - http://www.scopus.com/inward/record.url?scp=70349095544&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70349095544&partnerID=8YFLogxK
U2 - 10.1109/ICNSC.2009.4919267
DO - 10.1109/ICNSC.2009.4919267
M3 - Conference contribution
AN - SCOPUS:70349095544
SN - 9781424434923
T3 - Proceedings of the 2009 IEEE International Conference on Networking, Sensing and Control, ICNSC 2009
SP - 176
EP - 180
BT - Proceedings of the 2009 IEEE International Conference on Networking, Sensing and Control, ICNSC 2009
T2 - 2009 IEEE International Conference on Networking, Sensing and Control, ICNSC 2009
Y2 - 26 March 2009 through 29 March 2009
ER -