Решение задач поиска рациональных параметров трансмиссий шахтных дизелевозов методами прямой оптимизации
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НТУ "ХПИ"
Abstract
Рассмотрены основная (максимальный КПД) и вспомогательные задачи (аппроксимация экспериментальных данных) оптимизации параметров гидромеханических трансмиссий шахтных локомотивов при помощи модифицированного симплексного метода Нелдера-Мида. Показана возможность нахождения
локальных экстремумов на основе предварительного зондирования пространства; равномерного перебора начальных симплексов (при помощи ЛП-τ сеток) и локализации найденных экстремумов с введением дополнительных ограничений на N-мерную область определения произвольной целевой функции.
The main (maximum efficiency) and auxiliary tasks (approximation of experimental data)of optimizing the parameters of hydromechanical transmission of mine locomotives using the modified simplex method of Nelder-Mead are considered. The possibility of finding local extremums on the basis of the preliminary probing space; evenly busting the initial simplex (using LP-τ grids) and localization of extremums found with the introduction of additional restrictions on the N-dimensional space of arbitrary objective function. Further refinement of the algorithm is supposed to be carried out in the direction of balance account for simplex vertices, to reduce the number of iterations carried out – considering the second best and the worst peaks. Also stopping criterion for calculating, on the principle of full coverage zones OOTSF localization, ie receiving a total of its examination developed.
The main (maximum efficiency) and auxiliary tasks (approximation of experimental data)of optimizing the parameters of hydromechanical transmission of mine locomotives using the modified simplex method of Nelder-Mead are considered. The possibility of finding local extremums on the basis of the preliminary probing space; evenly busting the initial simplex (using LP-τ grids) and localization of extremums found with the introduction of additional restrictions on the N-dimensional space of arbitrary objective function. Further refinement of the algorithm is supposed to be carried out in the direction of balance account for simplex vertices, to reduce the number of iterations carried out – considering the second best and the worst peaks. Also stopping criterion for calculating, on the principle of full coverage zones OOTSF localization, ie receiving a total of its examination developed.
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Клименко И. Ю. Решение задач поиска рациональных параметров трансмиссий шахтных дизелевозов методами прямой оптимизации / И. Ю. Клименко, И. А. Таран, М. Н. Трубицин // Вестник Нац. техн. ун-та "ХПИ" : сб. науч. тр. Темат. вып. : Проблемы механического привода. – Харьков : НТУ "ХПИ". – 2015. – № 34 (1143). – С. 49-58.