Precise Joint Torque Control Method for Two-inertia System with Backlash Using Load-side Encoder

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: 2019/01/01

タイトル(英語): Precise Joint Torque Control Method for Two-inertia System with Backlash Using Load-side Encoder

著者名: Shota Yamada (The University of Tokyo), Hiroshi Fujimoto (The University of Tokyo)

著者名(英語): Shota Yamada (The University of Tokyo), Hiroshi Fujimoto (The University of Tokyo)

キーワード: backlash，motion control，nonlinearity，robot control，torque sensorless control，two-inertia system

要約(英語): Force/torque control is attracting considerable attention for the realization of compliant motion in mechatronic systems such as industrial robots and human-support robots. They have transmission mechanisms such as gear reducers, which introduce resonance in the low frequency range and nonlinearity by backlash. To achieve high precision even with transmission mechanisms, the reduced cost of high-resolution encoders has increased the number of devices with load-side (gear-output-side) encoders in industry. Therefore, this study proposes a precise joint torque control method with backlash compensation by using load-side encoder information. The effective use of the load-side encoder information enables the proposed method to compensate the fast backlash effect in a feed forward manner. Moreover, based on the experimental analyses, the novel backlash compensation model is proposed to solve the problems caused by the conventional backlash compensation model. Simulation and experimental results demonstrate the advantages of the proposed method.

本誌: IEEJ Journal of Industry Applications Vol.8 No.1 （2019）

本誌掲載ページ: 75-83 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/8/1/8_75/_article/-char/ja/