LEAD
| Collection | International Encyclopedia of Systems and Cybernetics |
|---|---|
| Year | 2004 |
| Vol. (num.) | 2(1) |
| ID | ◀ 1869 ▶ |
| Object type | General information |
The property of a regulator able to evaluate the future behavior of the system and to activate the necessary corrective action.
Such ability depends of the data available to the regulator (about the system itself and about its possible interactions with its environment), in accordance with the CONANT — ASHBY principle that a good regulator must include a reliable model of the system it regulates.
The lead should compensate the normal lag in a feedback loop whose corrective action merely follows the registered difference between the prescribed and the observed state of the regulated process in the system.
Such lagging feedback may be unable to correct divergences in due time and may even help throwing the process or system out of its stability range.