摘要
针对两电机变频系统非线性强耦合的特点,提出基于支持向量机广义逆内模控制的方法。对工作在矢量控制方式下的两电机变频系统数学模型进行广义逆存在性分析,从而得出系统广义逆数学表达式。通过支持向量机来辨识原系统的广义逆系统,然后对复合后所得到的伪线性系统引入了内模控制。该方法结合了支持向量机在小样本上具有良好的非线性建模能力和泛化能力,以及内模控制器易于在线设计的优点,同时兼顾系统的鲁棒稳定性,从而可以有效提高系统的控制效果。仿真和实验结果表明,该方法具有良好的动静态解耦性能,对外界扰动亦有很强的鲁棒稳定性。
Considering the nonlinear high coupling characteristic in two-motor variable frequency systems,a novel control scheme based on the generalized inverse internal model control（IMC） of support vector machine（SVM） is proposed.After analyzing the existence of the generalized inverse in two motor systems,in which inverters worked in the vector control mode,the generalized inverse mathematical expressions were given.The generalized inverse system identified by the support vector machine combined with the original system to form the pseudo-linear system,which was subsequently introduced to the internal model control（IMC）.Taking the advantage of the SVM＇s good generalization and nonlinear modeling capabilities in small sample sets,and the internal model controller＇s robustness and convenience for online design,the new system has significantly improved the effects of the control.The theoretical and experimental results show that the developed drive system has good static and dynamic decoupling performance,and can deal with external disturbances with strong robustness.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2011年第6期85-91,共7页
Proceedings of the CSEE
基金
国家自然科学基金项目(60874014
50907031)
江苏省自然科学基金资助项目(BK2007094)~~
关键词
两电机系统
支持向量机
广义逆
内模控制
解耦控制
two motor systems
support vector machine（SVM）
generalized inverse
internal model control（IMC）
decoupling control
