Multi-Axis Control using Model Matching Method of Feed Drive Systems for CNC Machine Tools.
Multi-Axis Control using Model Matching Method of Feed Drive Systems for CNC Machine Tools.
复制标题
数控机床进给驱动系统模型匹配方法的多轴控制。
DOI：
10.2493/jjspe.65.704
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
M. Tsutsumi
中科院分区：
文献类型：
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作者：
T. Yamazaki;Tomohiro Kurihara;M. Tsutsumi
针对数控机床进给驱动系统，提出了一种基于模型匹配法的多轴控制方法。机床各轴的伺服系统是独立调谐的。我们试着调整使Y轴与X轴匹配的机床。在机床中，X轴通常安装在Y轴上，Y轴比X轴具有更大的质量和更低的固有频率。因此，Y轴产生共振或超调。在采用P控制的圆周运动中，当X轴和Y轴的比例增益不同时，圆周轨迹通常变成椭圆。为了解决这些问题，提高机床的精度，本文提出了一种将前馈补偿器与基于P控制的反馈补偿器相结合的多轴控制方法，并利用模型匹配方法设计了前馈补偿器。实验结果表明，所提出的进给驱动系统具有良好的转弯和圆周运动性能。
This paper presents a multi-axis control method using a model matching method for feed-drive systems of CNC machine tools. The servo system of each axis of a machine tool is independently tuned up. We try to tune up a machine tool matching Y-axis to X-axis. In machine tools the X-axis is usually mounted on the Y-axis, and the Y-axis has larger mass and lower natural frequency than the X-axis. Therefore, the Y-axis yields resonance or overshoot. In circular motion using P control, when proportional gains of X and Y axes are different, the circular trajectories generally become an ellipse. In order to solve these problems and to improve the accuracy of machine tools, this study proposes a multi-axis control method applied a feedforward compensator to a feedback compensator based on P control and a feedforward compensator designed using the model macthing method. Experimental results show that proposed feed-drive systems have good performance in cornering and circular motions.