Abstract
Some necessary conditions for the optimality of junctions between singular and nonsingular subarcs arising in optimal control problems are well established. The second part of McDanell's conjecture has been proved false. The first part still awaits verification or otherwise. This paper briefly summarizes previous work and presents some evidence to suggest that the first part of the conjecture is also false.
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Bell, D. J., andJacobson, D. H.,Singular Optimal Control Problems, Academic Press, London, England, 1975.
Miele, A.,Extremization of Linear Integrals by Green's Theorem, Optimization Techniques with Applications to Aerospace Systems, Edited by G. Leitmann, Academic Press, New York, New York, pp. 69–98, 1962.
Kelley, H. J., Kopp, R. E., andMoyer, H. G.,Singular Extremals, Topics in Optimization, Edited by G. Leitmann, Academic Press, New York, New York, pp. 63–101, 1967.
MacDanell, J. P., andPowers, W. F.,Necessary Conditions for Joining Optimal Singular and Nonsingular Subarcs, SIAM Journal on Control, Vol. 9, pp. 161–173, 1971.
Fuller, A. T.,Study of an Optimum Nonlinear Control System, Journal of Electronics and Control, Vol. 15, pp. 63–71, 1963.
Maurer, H.,An Example of a Continuous Junction for a Singular Control Problem of Even Order, SIAM Journal on Control, Vol. 13, pp. 899–903, 1975.
Bell, D. J., andBoissard, M.,Necessary Conditions at the Junction of Singular and Nonsingular Control Subarcs, International Journal of Control, Vol. 29, pp. 981–990, 1979.
Bortins, R.,On Joining Nonsingular and Singular Optimal Control Subarcs, International Journal of Control, Vol. 37, pp. 867–872, 1983.
Pan, G. L., andBell, D. J.,A Counterexample to a Conjecture of McDanell, Systems and Control Letters, Vol. 9, pp. 85–87, 1987.
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Communicated by A. Miele
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Bell, D.J. Optimality conditions at junctions of singular and nonsingular controls. J Optim Theory Appl 78, 1–8 (1993). https://doi.org/10.1007/BF00940696
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DOI: https://doi.org/10.1007/BF00940696