微小変位領域の摩擦特性を考慮した象限突起補償器

• 佐藤 隆太

  東京農工大学大学院

• 寺島 義道

  東京農工大学大学院工学府博士前期課程

• 堤 正臣

  東京農工大学大学院

書誌事項

タイトル別名

• Quadrant Glitch Compensator Based on Friction Characteristics in Microscopic Region
• ビショウ ヘンイ リョウイキ ノ マサツ トクセイ オ コウリョシタ ショウゲン トッキ ホショウキ

抄録

This paper proposes a friction compensator based on the friction characteristics in the microscopic displacement region. In order to evaluate the motion accuracy of feed drive systems for the NC machine tools, circular tests are generally applied. It is known that the large quadrant glitches are often observed on the circular trajectories, and it is caused by the friction forces of the mechanism. In this paper, the relationship between table displacement and total friction torque around the motor axis is modeled by a simple friction model which can accurately estimate the behavior of the friction torque. The proposed friction model is a function of the table displacement, not a function of velocity. Based on the friction model, a friction compensator is invented. The proposed friction compensator consists of a table position estimator, an inverse transfer function of the servo motor, and the friction model. From the experimental and simulation results, it is clarified that the quadrant glitches can be effectively eliminated by the proposed friction compensator, even if the radius and feed rate of circular motion change.

収録刊行物

• 精密工学会誌

  精密工学会誌 74 (6), 622-626, 2008

  公益社団法人 精密工学会

キーワード

• feed drive system
• circular motion
• quadrant glitch
• friction model
• friction compensator

詳細情報

• CRID: 1390001204797627776
• NII論文ID: 110006782718
• NII書誌ID: AN1003250X
• DOI: 10.2493/jjspe.74.622
• ISSN: 1882675X
• ISSN: 09120289
• HANDLE: 20.500.14094/90001948
• NDL書誌ID: 9540774
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9540774
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