基于多层模糊控制的交叉耦合补偿方法的研究及应用  

Research and application of cross-coupling compensation method based on multilayer fuzzy control

作　　者：张代林[1] 刘宇晗[1] 杨吉祥[1] 陈幼平[1] 

机构地区：[1]华中科技大学机械科学与工程学院,湖北武汉430074

出　　处：《机械设计》2012年第1期36-39,61,共5页Journal of Machine Design

基　　金：国家自然科学基金资助项目(51005086);中央高校基金资助项目(2010MS085)

摘　　要：采用交叉耦合控制能有效地提高复杂曲面轮廓精度,但是传统的交叉耦合控制需要一个确定的数学模型,而且对于大于3轴的多轴交叉耦合控制,由于建模非常困难等原因,现有的研究成果比较少。在加工复杂轮廓时,由于各个轴之间的耦合强度是不同的,所以在前人研究的基础上提出基于多层模糊的交叉耦合补偿方法。该方法根据各个轴之间耦合关系的强弱对耦合层次进行划分,然后设计多层耦合控制器,对实时的轮廓误差进行补偿,更符合实际控制系统的组合规律,所以综合的控制性能更高。最终,将该方法在四轴联动对称加工机床上进行实验研究。The use of cross-coupling control can effectively improve the accuracy of complex surface contoum. However, the traditional cross-coupling control requires a mathematical modal, and for the cross-coupling control with multi-axes of more than 3-axes, the existing research result is less because it is difficult to modeling. In the processing of complex contours, due to the different coupling strength between each axis, the cross-coupling compensa- tion method based on mttlti-layer is proposed on the basis of previous studies. This method divides coupling levels according to the coupling strength between each axis, and then designs the multilayer coupling controller to compensate with the contour error in real-time. It is more in line with the combination rule of actual control system, so it has a better integrated control performance. Finally, the method will be studied in a four linkage symmetric processing machine tools.

关 键 词：交叉耦合控制 多层模糊 轮廓误差 四轴联动 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]