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介绍了现有数控机床几何误差参数辨识的基本原理及辨识方法；对各种几何误差参数辨识方法进行了比较分析，提出了新的数控机床几何误差参数辨识方法；并进行了详细的理论分析和相关的实验验证．
The basic principles and identification methods of geometric error parameters identification of NC machine tools are introduced. The methods for identifying geometric error parameters are compared and a new method for identifying geometric error parameters of NC machine tools is proposed. Detailed theoretical analysis and Related experimental verification.