针对实际控制系统中 ,特别是采用 Microsoft Windows平台的计算机控制系统 ,普遍存在采样周期不稳定问题 ,详细讨论了该问题中系统采样周期扰动的鲁棒边界 .基于几条对于离散系统非常普遍的假设 ,经过理论推导 ,得到了一个仅与理想系统参数 A0 及 T0 有关的采样周期扰动τ的鲁棒边界 .这一鲁棒边界的确定 ,对确保工程控制中的计算机控制系统的稳定性提供了理论上的依据 For the practical control system, especially the computer control system based on Microsoft Windows platform, the sampling period instability is ubiquitous and the robust boundary of system sampling period perturbation in this problem is discussed in detail. Based on several assumptions that are very common to discrete systems After theoretical derivation, we obtain a robust boundary of sampling period perturbation τ which is only related to the ideal system parameters A0 and T0. The determination of this robust boundary provides the theory to ensure the stability of the computer control system in engineering control On the basis