Torque Ripple Suppression Method Using Coriolis Force Generated by Electromagnetic Oscillatory Actuator

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K14135
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 21010:Power engineering-related
• Research Institution: Ibaraki University
• Principal Investigator: Kato Masayuki 茨城大学, 理工学研究科(工学野), 講師 (20851265)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: モータ / 交流モータ / リニアアクチュエータ / コリオリ力 / トルクリップル

Outline of Final Research Achievements

In this study, a torque ripple suppression method using the Coriolis force generated by a radially reciprocating linear actuator is proposed. The linear actuator was made to oscillate at twice the frequency of the ripple, and resonance was generated to maximize the suppression effect. The effectiveness of this method was experimentally demonstrated. However, the system may become complicated because a slip ring is required to feed power to the linear actuator stationary on the rotor, and there is room for improvement.

Free Research Field

電気機器工学

Academic Significance and Societal Importance of the Research Achievements

本研究では半径方向に往復運動するリニアアクチュエータが発生させるコリオリ力を利用したトルクリプル抑制法を提案した．リプルの周波数の2倍でリニアアクチュエータを振動させることにより，共振が発生し抑制効果が最大化した．またその有効性を実験的に明らかにした．本成果はモータで不可避なトルクリプルの抑制法の一つとして位置づけられる．