目的 研究 3D 打印机下 x-y平台的双轴矢量控制精度。 方法 介绍永磁电机的数学模型， 同时对系统的轮廓误差进行描述， 对变增益交叉耦合矢量控制算法进行分析。 在 Matlab/Simulink 软件中对两轴变增益交叉耦合矢量控制进行仿真并分析。 结果 变增益交叉耦合矢量控制算法能将轮廓误差控制在 0.01 mm之内 。 结论 通过变增益交叉耦合算法，提高了系统的鲁棒性，并且减小了系统的轮廓误差。

Objective To investigate the biaxial vector control precision of x-y stage under 3D printers. Methods The article introduced the mathematical model of permanent magnet motor, meanwhile described the outline of the system and analyzed the error of variable gain cross coupling vector control algorithm. The Matlab / Simulink software was used for simulation and analysis of the biaxial controlled variable gain cross coupling vector control algorithm. Results The simulation results showed that the variable gain cross coupling vector control algorithm could control the contour error within 0.01 mm. Conclusion By varying the gain cross-coupling algorithm, system robustness was improved, and the outline of the system error was reduced.