本文提出了受扰线性定常多变量系统“鲁棒”稳定性的一个充分和必要条件。它不仅可用于系统分析中作为“鲁棒”稳定性判据，而且也为“鲁棒”稳定系统的综合提供设计依据。它特别适用于参数变化范围较大的控制对象的综合设计。设计程序包括选择合适的名义设计参数，确定闭环系统的主极点以及检验高、低频稳定性等。 In this paper, a sufficient and necessary condition for the “robust” stability of multivariable systems with disturbed linear operators is proposed. It not only serves as a criterion for “robust” stability in system analysis, but also provides the basis for the synthesis of “robust” stable systems. It is especially suitable for the comprehensive design of control objects with a wide range of parameter changes. The design process includes selecting the appropriate nominal design parameters, determining the dominant pole of the closed-loop system, and verifying high and low frequency stability.