期刊
SIAM JOURNAL ON CONTROL AND OPTIMIZATION
卷 39, 期 2, 页码 359-410出版社
SIAM PUBLICATIONS
DOI: 10.1137/S0363012999322031
关键词
optimal control; regular synthesis; sufficient conditions
We propose a definition of regular synthesis that is more general than those suggested by other authors such as Boltyanskii [SIAM J. Control Optim, 4 (1966), pp. 326-361] and Brunovsky [Math. Slovaca, 28 (1978), pp. 81-100], and an even more general notion of regular presynthesis. We give a complete proof of the corresponding sufficiency theorem, a slightly weaker version of which had been stated in an earlier article, with only a rough outline of the proof. We illustrate the strength of our result by showing that the optimal synthesis for the famous Fuller problem satis es our hypotheses. We also compare our concept of synthesis with the simpler notion of a family of solutions of the closed-loop equation arising from an optimal feedback law, and show by means of examples why the latter is inadequate, and why the difficulty cannot be resolved by using other concepts of solution such as Filippov solutions, or the limits of sample-and-hold solutions recently proposed as feedback solutions by Clarke et al. [ IEEE Trans. Automat. Control, 42 (1997), pp. 1394-1407] for equations with a non-Lipschitz and possibly discontinuous right-hand side.
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