Resonance-suppression Control for Electro-hydrostatic Actuator as Two-inertia System

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門（英文）

発行日: 2017/09/01

タイトル(英語): Resonance-suppression Control for Electro-hydrostatic Actuator as Two-inertia System

著者名: Kenta Tsuda (Graduate School of Science and Engineering, Saitama University), Tomoki Sakuma (Graduate School of Science and Engineering, Saitama University), Kodai Umeda (Graduate School of Science and Engineering, Saitama University), Sho Sakaino (Gradua

著者名(英語): Kenta Tsuda (Graduate School of Science and Engineering, Saitama University), Tomoki Sakuma (Graduate School of Science and Engineering, Saitama University), Kodai Umeda (Graduate School of Science and Engineering, Saitama University), Sho Sakaino (Graduate School of Science and Engineering, Saitama University), Toshiaki Tsuji (Graduate School of Science and Engineering, Saitama University)

キーワード: electro-hydrostatic actuator，hydraulic closed-loop circuit，two-inertia system，resonance ratio control

要約(英語): Electro-hydrostatic actuators (EHAs) are hydraulic actuators with high power-to-weight ratios that exhibit low energy loss. Thus far, methods for determining the characteristics and parameters of EHAs have not been fully established. Therefore, modeling methods for EHA are in demand. EHAs are driven by servomotors on the motor-side and hydraulic motors on the load-side, and therefore, the actuators are expected to experience sympathetic vibrations. Thus, EHAs can be considered as systems in which two rigid objects are connected to one another with a low-rigidity shaft such as a spring. The occurrence of resonance in EHAs has not yet been discussed because of difficulties with hydraulic systems. One major problem is the large friction in hydraulic motors. We apply a feedback modulator for friction compensation to enable the experimental identification of characteristics. Assuming that EHAs experience two-inertia resonance, the parameters of the motors can be calculated. In addition, vibration-suppression techniques for two-inertia systems can be applied to EHAs. This study proposes the application of a two-inertia model to suppress vibrations in EHAs and verify their dynamic characteristics.

本誌: IEEJ Journal of Industry Applications Vol.6 No.5 （2017）

本誌掲載ページ: 320-327 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejjia/6/5/6_320/_article/-char/ja/