提高轮廓加工精度的零相位自适应鲁棒交叉耦合控制  

Zero Phase Adaptive Robust Cross Coupling Control for Improving the Contour Machining Precision

作　　者：赵希梅[1] 郭庆鼎[1] 

机构地区：[1]沈阳工业大学电气工程学院,沈阳110023

出　　处：《电工技术学报》2007年第12期170-174,共5页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(50075057)

摘　　要：为了提高精密工件的轮廓加工精度,在分析系统轮廓误差的基础上,提出将零相位误差跟踪控制器(ZPETC)、自适应鲁棒控制器(ARC)和交叉耦合控制器(CCC)相结合的控制策略。ZPETC提高了系统动态响应的快速性,消除系统的滞后现象,实现了准确跟踪;ARC克服了系统参数变化、负载扰动等不确定性,增强了系统的品质鲁棒性和稳定性;CCC用以消除各轴之间的增益参数和动态参数不匹配的影响,以进一步减小轮廓误差。仿真结果表明所提出的控制方案十分有效,为提高零件的轮廓加工精度指供了一种新方法。To improve the contour machining precision of the precise workpiece, on the basis of analyzing the contour error of the system, the control strategy combining zero phase error tracking controller （ZPETC） and the adaptive robust controller （ARC） with the cross coupling controller （CCC） is presented in the paper. ZPETC enhances the fastness of the system dynamic response, eliminates the delay problem of the system, and implements the accurate tracking. ARC can overcome influences of the uncertainty including the parameters changes of the system, the load disturbance and so on. This enhances the quality robustness and stability of the system. And CCC can eliminate the influence of the gain parameter and dynamic parameter mismatching between the axis to further reduce the contour error. The simulation results show that the proposed control scheme is effective. The new method of improving the contour machining precision of the parts is presented.

关 键 词：轮廓误差 零相位误差跟踪控制 自适应鲁棒控制 交叉耦合控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TM383.42[自动化与计算机技术—控制科学与工程]