A REVIEW OF TORQUE RIPPLE REDUCING METHODS BASED ON MATHEMATICAL SIMULATION
Abstract and keywords
Abstract (English):
The subject of this investigation is the methods of switched reluctance motors controlling. The study objective is to review the existing methods of reducing shaft electromagnetic torque ripple in the switched reluctance motors. A comparative analysis of the existing approaches to valve drives control systems development is used to classify the electromagnetic torque control methods. The study results can be used when selecting the drive control method providing a balance between the complexity of the control system implementation and its effectiveness. On the basis of the comparative analysis, the conclusions on the neural network torque control systems effectiveness with offline learning are made; the control system enhancement using co-energy magnetic drive system as well as the inclusion of the residual magnetization material effects in the model is marked. It is noted that the existing systems aligning the magnetization of the actuator materi-als reduce the average torque for the work cycle.

Keywords:
switched reluctance motor, production ma-chine, method of reducing torque ripple, slow and creep speed, executive mechanism, mathematical model, modeling.
Text

Создание современных технологических машин (ТМ), включая промышленные роботы (ПР) широ-кого назначения, сопряжено с выбором привода и оценкой его технических возможностей — например, для реализа-ции особых режимов работы электропривода и обеспечения нормативов технологического процесса. В настоящее время ведутся поиски схемотехнических решений по управлению вентильно-индукторным двигателем (ВИД). Исследуются возможности его применения в электроприводах промышленных роботов (ПР), другом технологическом оборудовании (ТО), станочных и робототехнических системах (РТС). Известно [1, 2], что особенностью в работе упомя-нутых электроприводов является обеспечение повторно-кратковременных режимов и поддержание равномерности вращения (перемещения) исполнительного механизма (ИМ) рабочего органа (РО) в зоне малой скорости. При ряде хороших технических показателей ВИД и универсальности известных схем управления ими [3] существует некоторая проблема целевого применения таких двигателей в ТМ из-за наличия пульсирующих моментов на валу в зоне малой скорости перемещения ИМ. По мнению авторов, поиск приемлемого решения возможен. Он должен базироваться на взаимосвязи всех составляющих ТМ: механических, электрических, информационных, в целом определяющих технические характеристики и работоспособность ТМ. Решение задачи повышения равномерности движения и стабильно-сти позиционирования ИМ с электроприводом на базе ВИД является важнейшим ориентиром при выборе электропри-вода ТМ, способного программно работать с заданными характеристиками в зоне низких и ползучих скоростей дви-жения ИМ.

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