针对多变量分数阶控制系统的稳定性问题，分析了采用了特征值区间法来判别系统稳定性的方法。对状态矩阵与阶数在某一区间内变化的多变量分数阶系统，总结出了稳定性判别的方法与步骤-For the stability of multivariable fractional order control system, the characteristic values were analyzed using interval method to determine the stability of the system approach. Multivariable fractional order system state matrix and order within a certain range of variation, summed up the methods and procedures for stability judgment