| Electrical & Electronic Engineering |
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| Research on new software compensation method of static and quasi-static errors for precision motion controller |
| REN Kun, FU Jian-zhong, CHEN Zi-chen |
| 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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Received: 03 April 2007
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