电主轴作为实现高速切削的机电一体化功能部件，其动态性能与运行精度成为决定加工品质与效率的关键因素。针对高速精密电主轴机电信息分离应用、动态特性获取困难、品质评价融合不足的问题，本项目重点研究基于机电信息融合的高速精密电主轴动态运行品质检测与评价方法，构建由三相定子电流激励与回转部件机械响应之间的机电系统耦合作用模型，揭示高速精密电主轴机电特性对其动态运行性能的影响规律；研究基于四点法的高速精密电主轴动态回转精度正交定心测量与解耦分离方法和基于三相电流信号的电主轴机电信息空间/矢量解调及特征融合表征与识别方法，实现对高速精密电主轴运行回转精度的量化表征和机电动态特性的电流特征辨识；最后将动态多源机电检测信息有机融合，实现对高速精密电主轴综合品质的一致性评价。通过本项目的研究，力求为高速精密电主轴提供一套动态性能检测与运行品质评价的系统技术，并有效支撑高速精密电主轴系统设计改进与制造工艺优化。

As the mechatronics functional unit of high-speed cutting, the dynamic performance and running accuracy of the motorized spindle are the key factors to determine the machining quality and efficiency, however, some obstacles currently affect its development, especially separate to use electromechanical information, difficult to extract dynamic information, and scant to combine quality evaluation. In view of these problems, this research project is focused on the detection and evaluation methods of dynamic operation quality with the combined electromechanical information of the high-speed & high-precision motorized spindle. Firstly, the coupling model of electromechanical system between the three-phase stator current excitation and the rotary mechanical components response of the motorized spindle is constructed, which is used to reveal the role of electromechanical coupling characteristics influence on dynamic performance of the motorized spindle. Secondly, the orthogonal centering measurement and dynamic decoupling methods based on four-point method of rotary accuracy of the high-speed & high-precision motorized spindle, the feature vector demodulation and state identification methods of electromechanical information based on the three-phase current signal of the high-speed & high-precision motorized spindle, both methods are used to achieve the quantitative characterization of rotary accuracy and the current characteristics identification of electromechanical information, respectively. Finally, the dynamic multi-source information from the performance and accuracy detections are integrated to realize the consistency evaluation for the comprehensive running quality of the high-speed & high-precision motorized spindle. Through the research of this project, we hope to be able to provide a set of systematic technology of dynamic performance detection and operation quality evaluation, which could be very helpful to improve the systematic design and the manufacturing process optimization of the high-speed & high-precision motorized spindle.