Quadrant Glitch Compensator Based on Friction Characteristics in Microscopic Region
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- SATO Ryuta
- 東京農工大学大学院
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- TERASHIMA Yoshimichi
- 東京農工大学大学院工学府博士前期課程
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- TSUTSUMI Masaomi
- 東京農工大学大学院
Bibliographic Information
- Other Title
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- 微小変位領域の摩擦特性を考慮した象限突起補償器
- 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
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Description
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.
Journal
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- Journal of the Japan Society for Precision Engineering
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Journal of the Japan Society for Precision Engineering 74 (6), 622-626, 2008
The Japan Society for Precision Engineering
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Details 詳細情報について
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- CRID
- 1390001204797627776
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- NII Article ID
- 110006782718
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- NII Book ID
- AN1003250X
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- ISSN
- 1882675X
- 09120289
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- HANDLE
- 20.500.14094/90001948
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- NDL BIB ID
- 9540774
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- Data Source
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- JaLC
- IRDB
- NDL Search
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed