提出了基于最小二乘支持向量机(LS-SVM)的分数阶混沌系统控制方法.基于分数阶线性系统稳定理论,通过线性分离的方法将系统分解为稳定的线性部分和相应的非线性部分,再利用支持向量机良好的非线性函数逼近和泛化能力设计了主动控制器,对非线性部分进行补偿,从而将分数阶混沌系统控制到平衡点.分别以分数阶Liu系统和分数阶Chen系统为例进行了仿真研究,表明该方法是有效和可行的. A control method of fractional-order chaotic system based on least-squares support vector machine (LS-SVM) is proposed.Based on the theory of fractional-order linear system stability, the system is decomposed into linear part and corresponding non-linear part by linear separation method, Then the active controller is designed based on the good nonlinear function approximation and generalization ability of support vector machines to compensate the nonlinear part, so that the fractional chaotic system is controlled to the equilibrium point. By using fractional order Liu system and fractional order Chen system As an example, the simulation study shows that the method is effective and feasible.