Stability

Full Title or Meme

A system can be considered stable when external changes can be accommodated without major disturbance to the status quo.

Context

• Control theory is the study of enabling stabile system, whether static or dynamic.
• An identity ecosystem can be considered stable when the binding of an identifier to an object can be trusted over some extended period.

Static Stability

• A system can be considered stable when the mechanisms inside the system provide a restorative force against changes that does not cause wild variations in the state of the system.
• A control system that is stable may have mild overcorrection, but when that is limited to one cycle, it is considered to be critically damped.
• Such a system can be called Homeostatic.

Dynamic Stability

• When the system is not stable without external inputs, it is considered to be dynamically stable when such external inputs are available and operational.