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Journal of Zhejiang University SCIENCE C
ISSN 1869-1951(Print), 1869-196x(Online), Monthly
2011 Vol.12 No.8 P.667-677
Solving infinite horizon nonlinear optimal control problems using an extended modal series method
Abstract: This paper presents a new approach for solving a class of infinite horizon nonlinear optimal control problems (OCPs). In this approach, a nonlinear two-point boundary value problem (TPBVP), derived from Pontryagin’s maximum principle, is transformed into a sequence of linear time-invariant TPBVPs. Solving the latter problems in a recursive manner provides the optimal control law and the optimal trajectory in the form of uniformly convergent series. Hence, to obtain the optimal solution, only the techniques for solving linear ordinary differential equations are employed. An efficient algorithm is also presented, which has low computational complexity and a fast convergence rate. Just a few iterations are required to find an accurate enough suboptimal trajectory-control pair for the nonlinear OCP. The results not only demonstrate the efficiency, simplicity, and high accuracy of the suggested approach, but also indicate its effectiveness in practical use.
Key words: Infinite horizon nonlinear optimal control problem, Pontryagin’s maximum principle, Two-point boundary value problem, Extended modal series method
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DOI:
10.1631/jzus.C1000325
CLC number:
TP13
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On-line Access:
2011-08-03
Received:
2010-09-19
Revision Accepted:
2011-04-06
Crosschecked:
2011-07-04