unstable stability

Under the condition that activation time ratio between stable subsystems and unstable ones is not less than a specified constant, sufficient conditions are given to guarantee exponential stability of the switched delay systems.

切换系统中可以含有不稳定子系统。利用稳定的子系统和不稳定的子系统被激活的总的时间的比，给出了保证该系统指数稳定的充分条件。

This paper presents the stability limits prediction by sensitivity based BCU method using network structure preserving model. The main feature is that it does not rely on the assumption that the controlling unstable equilibrium point does not change when the operation parameter changes.

阐述了电力系统结构保持模型下基于灵敏度的BCU方法，其显著特征是当运行参量变化时不依赖于主导不稳定平衡点不变的假设。

This is beneficent to slope stability. ( 6) There is no unstable damaging area in the non-cavity model, but it still has potential unstable sliding zone.

对于无空腔模型，模型中虽然没有出现正在破坏失稳的区域，但存在潜在的失稳滑动带。

Influences of Stability of Parameters of Unstable Confocal Resonator on Output Beam

共焦非稳腔几何参数稳定性对输出光束的影响

According to the stability region theory of constrained dynamic system, the restricted stability boundary is composed of stable manifolds of unstable equilibrium points, periodic orbits and semi-saddles on the boundary, and portions of the boundary of the feasible region.

根据带约束动力系统稳定域理论，其受限稳定边界由边界上不稳定平衡点、周期轨和半鞍点的稳定流形以及部分可行域边界构成。