| Research on new software compensation method of static and quasi-static errors for precision motion controller |
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| 作者姓名： | REN Kun FU Jian-zhong CHEN Zi-chen |
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| 作者单位： | Department of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China |
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| 基金项目： | Project supported by the Special Project for Key Mechatronic Equipment of Zhejiang Province （No. 2006C11067） and the Science ＆ Technology Project of Zhejiang Province （No. 2005E10049）, China |
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| 摘 要： | To reduce mechanical vibrations induced by big errors compensation, a new software compensation method based on an improved digital differential analyzer （DDA） interpolator for static and quasi-static errors of machine tools is proposed. Based on principle of traditional DDA interpolator, a DDA interpolator is divided into command generator and command analyzer. There are three types of errors, considering the difference of positions between compensation points and interpolation segments. According to the classification, errors are distributed evenly in data processing and compensated to certain interpolation segments in machining. On-line implementation results show that the proposed approach greatly improves positioning accuracy of computer numerical control （CNC） machine tools.
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| 关 键 词： | 机械加工 静电学 数字微分分析 误差 |
| 收稿时间： | 2007-04-03 |
| 修稿时间： | 2007-07-22 |
Research on new software compensation method of static and quasi-static errors for precision motion controller |
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| REN Kun FU Jian-zhong CHEN Zi-chen.Research on new software compensation method of static and quasi-static errors for precision motion controller[J].Journal of Zhejiang University Science,2007,8(12):1938-1943. |
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| Authors: | Ren Kun Fu Jian-zhong Chen Zi-chen |
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| Institution: | (1) Department of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China |
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| Abstract: | To reduce mechanical vibrations induced by big errors compensation, a new software compensation method based on an improved digital differential analyzer (DDA) interpolator for static and quasi-static errors of machine tools is proposed. Based on principle of traditional DDA interpolator, a DDA interpolator is divided into command generator and command analyzer. There are three types of errors, considering the difference of positions between compensation points and interpolation segments. According to the classification, errors are distributed evenly in data processing and compensated to certain interpolation segments in machining. On-line implementation results show that the proposed approach greatly improves positioning accuracy of computer numerical control (CNC) machine tools. |
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| Keywords: | Static and quasi-static errors Positioning and machining accuracy Digital differential analyzer (DDA) interpolator |
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